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Ratchet Straps Web Lashing EN 12195-2

Ratchet Straps Web Lashing EN 12195-2

 

Ratchet straps are an important player in securing cargo for transport, and once you understand how to use them you’ll be wondering why you ever used anything else. They hold their tension with a built-in tensioner device and have rated weight capacities that make them a reliable and safe tie down choice.

EN 12195-2 Ratchet Straps

The web lashings made from man-made fibres according to the EN 12195-2 standard are a commonly used equipment for the cargo lashing. By means of the traction action obtained through a manual tensioning device, the web lashings hold the load by increasing the friction forces, in the case of the frictional lashing, or directly, in the case of the direct lashing.

The formulas contained in the EN 12195-1 standard require, for the calculation of lashing, the specific parameters for web lashing according to the EN 12195-2 standard. Therefore, the use of web lashings not approved according to this standard does not allow the calculation of the lashing according to the EN 12195-1 standard, and ultimately does not allow to comply with the cargo securing requirements in case of technical roadside inspections introduced by the Directive 2014/47/EU on the technical roadside inspection of the roadworthiness of commercial vehicles circulating in the Union.

The current edition of EN 12195-2 is the 2004 edition.

 

Web lashings main features

Web lashings usually consist of two branches with a manual ratchet on the short branch. The ends of the web lashings belts can have different types of hooks or rings, to properly fix the lashing in or on lashing points on the vehicle or on the cargo.

The ratchet shall always be manually operated, without the aid of levers or other mechanical devices, and shall be blocked during transport.

Some lashings are equipped with a built in tension indicator, for an immediate visual check of the tension force reached following the action on the ratchet.

The image below, present on the Würth website at this address, shows a typical example of a web lashing for cargo securing.

Ratchet Straps Web Lashing EN 12195-2

Typical web lashing for the cargo securing, image taken from the Würth online catalog

Web lashing label

Web lashings approved according to the EN 12195-2 standard are provided with a label describing the technical specifications, as shown in the example below.

Ratchet Straps Web lashing label according to EN 12195-2 standard
Ratchet Straps web lashing label according to EN 12195-2 standard

The content of the label is of fundamental importance for the correct selection and use of the web lashing. Below is a brief description of the main parameters contained on the label.

Web lashing strength

LC: lashing capacity. It is the maximum allowed force, expressed in daN, that the lashing device is designed to sustain in use. This is the parameter required to calculate the securing of the cargo in case of direct lashing, according to the provisions of the EN 12195-1 standard.

SHF: standard hand force of a lashing. It is the load, expressed in daN, which represents the maximum action that can be performed manually on the tensioning device. In practice, it is the maximum force, corresponding to about 50 kg, with which an operator can act on the ratchet to tension the lashing.

STF: standard tension force. Residual force after physical release of the handle of the tensioning device after an action equal to SHF = 50 daN. This is the parameter that is used to calculate the securing of the cargo when frictional lashing is used, according to the provisions of the EN 12195-1 standard. The higher the value of the STF parameter, the greater the lashing performance of the equipment. In fact, with the same action on the ratchet, equal to 50 daN, a web lashing with a higher STF value guarantees a greater residual tension than a web lashing with a lower STF value. Web lashings that do not have the STF parameter shown on the label shall not be used for frictional lashing, but can only be used for direct lashing.

Web lashing material

The color of the label represents the material of the fiber:

  • Blue: web made of PES, polyester. It is a material resistant to mineral acids, but subject to alkali attacks.
  • Green: web made of PA, polyamide. It is a material potentially immune to the effects of alkalis, but subject to attack by mineral acids.
  • Brown: web made of rete di PP, polypropylene. It is a material that is not subject to the attack of acids and alkalis, therefore more suitable than polyamide and polyester lashings for use in environments requiring high resistance to chemical agents

Recommendations for the correct use of web lashings

Web lashings represent are a valid method for the securing of the cargo, as they are versatile, they adapt to loads of different shapes and sizes and allow various lashing configurations to be adopted. However, for correct use and to ensure safety during transport, some simple but essential rules must be observed:

  • Web lashings shall be approved according to the EN 12195-2 standard and the information contained on the label must be legible;
  • The minimum number of lashings to be used, based on the specifications, shall be calculated according to the formulas contained in the EN 12195-1 standard;
  • Web lashings shall not show signs of weakening, such as tears, lacerations, or signs of wear. Similarly, the hooks at the ends of the belt shall not show any deformation. The belt shown in the photo below is damaged and shall not be used.
EN 12195-2 Example of a damaged web lashing
Example of a damaged web lashing
  • Web lashings shall not be used if knotted;
  • Web lashings shall be protected from contact with sharp corners of the load or of the vehicle, as this could damage the lashings causing them to break. In this regard, corner protectors shall be used, which among other things allow to reduce the friction between the belt and the load, ensuring a more uniform distribution of tension on all the branches of the belt. In addition, the corner protectors hold the belt in place and allow it to be used even on irregularly shaped loads;
  • As far as possible, it is advisable to periodically check the state of tension of the web lashings during transport and, if necessary, to restore them by the driver. Small settlements and vibrations could in fact cause a decrease in the tension of the web lashings limiting their effectiveness, especially in case of frictional lashing.

 

 

If you need help determining the right assembly or size for your application, e-mail our specialists at sales@lg-lifting.com for assistance.  🙂

How To Choose Fishing Net Float?

How To Choose Fishing Net Float?

 

Fishing with floating ball, such as EVA, PVC, EPS, PE material, the product adopts the high quality material, variety, complete specifications, the product have a spherical or oval, cylindrical and square plate, such as more than one hundred kinds of specifications, widely used in the net, a gill, cages and fish, as well as for decorative, protective, isolation, floating, marking, etc.

♦ PVC fishing net float

PVC floating ball is a traditional product, widely used in fishing, shallow sea aquaculture and other industries, is PVC closed cell foamed plastic, can be used on water and underwater, strong corrosion resistance, smooth surface, not easy to attach to Marine algae organisms, with reinforcing ring at both ends to increase wear resistance, light weight, large buoyancy, high cost performance.

 

PVC Fishing Net Floats for Commercial FishingPVC Fishing Net Floats for Commercial FishingPVC Fishing Net Floats for Commercial FishingPVC Fishing Net Floats for Commercial FishingPVC Fishing Net Floats for Commercial FishingPVC Fishing Net Floats for Commercial FishingPVC Fishing Net Floats for Commercial FishingPVC Fishing Net Floats for Commercial FishingPVC Fishing Net Floats for Commercial Fishing

 

♦ EVA fishing net float

EVA floating ball is especially suitable for large-scale Seine operation at sea. Its products are exported to more than 60 countries and regions in Southeast Asia, the Middle East, America, Africa and Europe, etc., and are well received by customers. It has become one of the main production bases of floating ball series in Asia and enjoys a high reputation among customers at home and abroad.

EVA float balls are widely used in deep-sea fishing, deep-sea aquaculture and other industries, especially suitable for large-scale Seine operation in the far sea. At present, developed countries in the world such as Europe, America, South Korea and Japan are using such products. Its characteristics are: high content of science and technology, small bubble pore, uniform; The surface of the floating ball is smooth, and it is not easy for Marine algae to attach and grow, which can reduce the resistance of floating in the water. Stable and reliable performance, can withstand high pressure and pressure sudden change, excellent resilience, wear resistance, tensile strength, lengthen the service cycle, reduce the user’s use cost.

  EVA Fishing Net Floats for Commercial Fishing China manufacturerEVA Fishing Net Floats for Commercial Fishing China manufacturer

 

♦ EPS fishing net float

The material of this product is made of compressed foam particles, which is anti-rot, anti-freeze, anti-oxidation and anti-ultraviolet material. It is not eroded by sea water, chemicals, agents, oil stains and aquatic organisms. It does not damage the environment and is a supporting product for cage culture.

The surface of buoy adopts reasonable design, safe and stable, circular shape to avoid installation difficulties. High bearing capacity, stable, durable, single float bearing capacity in 170-300kg or more. The service life of this product is at least 8-10 years, in addition to the strong natural force and artificial improper use, almost no need to spend any maintenance, repair costs. Simple assembly, fast, flexible, diverse modeling, the overall use of module structure, can meet the needs of various conditions, quickly change the platform modeling; The cost is reasonable, economical, from the long-term point of view, can save a large number of maintenance, maintenance, replacement, overhaul costs and time. This product can also add related supporting equipment, such as bollard guardrail, landing side bridge, etc., can berthing ships of various sizes; And because of the buoyancy characteristics of the floating platform, it can rise and fall automatically with the water level.

 

EPS float ball is widely used in aquaculture industry, is an excellent substitute for PE float ball. Features are: easy to small, water and underwater can be used, plasticity, low production cost, large buoyancy (100~300Kg), anti-aging, long service cycle.

 

EPS Fishing Net Floats for Commercial FishingEPS Fishing Net Floats for Commercial Fishing

 

♦ PE fishing net float

PE floating ball shell is made of 100% medium and low density polyethylene, medium density polyethylene floating body is made of advanced rolling molding process. The product is formed once without welding seam, fully closed, corrosion resistant, impact resistant, no leakage and cracking concern, and is filled with polyurethane closed foam inside. Product buoyancy, even if the shell is damaged does not affect the use. It is mainly used for buoyancy support of river lake and ocean dredging pipeline. It is a substitute product for traditional steel buoy tip. Specific use, shape, model, specification, size, can be customized according to customer requirements.

PE floating ball product performance characteristics:

1, PE floating ball floating body has good toughness and excellent impact resistance, especially suitable for offshore construction.

2, PE floating ball floating weight is light, easy to install and handling, transportation and transfer cost is low.

3, PE floating ball floating body corrosion resistance, long life.

4, PE floating ball floating body price is low, the cost performance is obviously better than steel buoy.

Polyethylene Fishing Net Floats for Commercial Fishing

 

 

If you need help determining the right assembly or size for your application, e-mail our specialists at sales@lg-lifting.com for assistance.  🙂

How to install and use U Bolt?

How to install and use U Bolt?

 

A U-Bolt is a U-shaped bolt with two threaded arms that extend up from a curved or square base. The special “U” shape of the bolt provides U-Bolts with a great deal of extra stability.

An U Bolt is commonly a type of fastener used in business construction to append any threaded rod or bolt accessory to concrete. After installing it, you will now be left with female threads in the binding material, featuring either threaded rod or bolts.

 

How to install an U Bolt?

Follow these five steps to ensure your U-bolt is installed correctly.

Step 1: Remove the Nuts
The U-bolt will probably come with nuts attached to its threads. Start by taking the nuts off each side of the bolt.

Step 2: Position the U-Bolt
Place the U-bolt around the object you’re attaching to the beam or support. This object is usually piping or tubing.

Step 3: Examine Your Holes
Next, make sure you properly drill holes through the support structure. If you’ve drilled through the beam, make sure you haven’t damaged its protective coating. Cracks in the coating can lead to rusting around holes. At this stage, it’s smart to touch up the beam’s surface around holes before adding your bolts.

Step 4: Thread the Bolt Through
Push the two bolt ends through the holes and thread the nuts on each end of the U-bolt.

Step 5: Fasten the Nuts
It’s good to note that nut placement on a restraint will be different from a guide. If you’re working with a restraint, you’ll want to tighten the nuts on the bottom side of the beam.

For guides, you’ll want to place one nut on the top side of the beam and one nut on the bottom side. These nuts allow proper spacing between the piping and U-bolt.

Once your nuts are in place, start by hand tightening the nuts closest to the beam first. Finally, tighten each end’s second nut. This will lock the U-bolt in place. Then, use a power tool or wrench to tighten the nuts until they’re secure.

 

Please browse our stainless steel U bolts selection below,

How to install and use U Bolt

Stainless Steel U Bolt TPN Type with 2 Plates & Nuts

 

 

More stainless steel U bolts

 

If you need help determining the right assembly or size for your application, e-mail our specialists at sales@lg-lifting.com for assistance. 🙂

How To Plan A Shade Sail Structure – Shade Sail Installation

How To Plan A Shade Sail Structure – Shade Sail Installation

 

How To Plan A Shade Sail Structure?

Sunshade sails can be placed in a variety of ways:

  1. Horizontally,where all corners are at the same height;
  2. Vertically,like a privacy fence;
  3. Slants & Angles with overlapping sails;
  4. Or,where some corners are high and some low.

 

You probably already have an idea of what you want to cover or what you want to design.If you haven’t decided yet, here are some ideas for a single or multiple design looks.

 

 

A horizontal sail can be boring to look at, while a totally vertical sail could catch more wind and could produce heavier loads.

The most visually appealing situation is when two or more shade sails are used and the mounting elevations of the sails change dramatically from corner to corner.

Setting mounting points 3ft or more change in height makes for a visually stunning look.

Prior to installation, check with local authorities for any relevant building regulations which may exist, and check with the local utility companies for any underground services prior to digging holes for the support posts.

Where To Place The Shade Sail?

Before you commence installation, it is very important that you consider the most suitable location for your shade sails. Take into account the following:

  1. Size of the shade sail(s);
  2. Strength of existing structures intended to be anchor points;
  3. Ability to insert suitable fixing posts;
  4. Location of barbecue grills, fire pits, and other high heat sources;
  5. Sun direction and path tracking;
  6. Wind speeds typical and maximum expected for your area.

 

Find a suitable anchor point for each corner of the shade sail, such as those listed below. These need to be strong enough to take the strain of the shade sail material when tensioned.
Anchor points could be:

  1. A wall or strong beam
  2. A suitable tree
  3. A wooden post at least 100mm diameter set in the ground.
  4. A metal pole at least 48mm diameter set in the ground.
  5. A metal pole at least 48mm diameter fitted into a sleeve in the ground, like a rotary washing line.

Fixing points should be at least 7ft 10inches above the ground, and it is extremely important that these are sufficiently strong to take the full weight of the shade sail in windy conditions.

The wind can add significantly to the stress of the shade sail on any fixings, so it is vital to be certain that they can stand the additional drag.
NB: If you have any doubts you should take advice from a builder or structural engineer.

Posts

If you need to install posts, these should be 48mm wide galvanised steel which is 4mm thick (these can be easily painted if required).

Posts should be angled away from the centre of the shade sail by at least 10 degrees to provide additional strength and stability.

Footings
Footings for posts for shade sails up to 16ft 5inches should be 400mm square and 800mm deep and this should increase to 400mm x 1200mm for larger sizes.

Foundations
Concrete
Concrete should be well packed down around the post and sloping slightly outwards at the top to ensure water does not collect around the post. This should be left for a minimum of 48 hours to allow it to set completely before you attach the shade sail. We do not recommend the use of rapid set concrete.
1. Firm ground
Lay a 100mm depth of 20mm gravel at the base of the post. Add concrete and brace post on the angle.
2. Soft ground
Pour a 100mm depth of concrete at the bottom of the hole to provide a solid pad. Allow this to set. Add the gravel at the base of the post. Add concrete and brace post on the angle.

Wall

Once you have decided on a suitable site, the shade sail should be laid out in position on the ground allowing an additional 10% at each corner for tensioning.

For larger gaps you may require stainless steel cable or similar to reach more distant fixing points.

Trees

If you decide to use a tree as a fixed point, it should be at least 250mm in diameter.

How To Set It Up?

Some possible combinations of fixing accessories

Connecting the sail shade
Connect fixing accessories to your mounting points as required.Ensure all accessories face towards the middle of the sail and are tightly secured.

Tensioning
To connect your sail shade you should first attach the adjustable fixings to the mounting points(ensuring they face the centre of the sail shade),and then attach the sail shade to these,using a strap temsioner to stretch the sail shade as tightly as possible,replacing this with a turnbuckle for final tensioning and adjustment.

Please browse our shade sail hardware selection below,

Important : at least two of the sail’s fixing accessories must be tensioning devises.

A rope or chain can be used extend you shade sail to a fixing point if required.Select the fixing accessories which best suit your own installation.


Stainless Steel Commercial Turnbuckle Hook/Hook European frame type China manufacturer supplier

Trunbuckle : To attach shade sail corner ring to a fixing point and provide tension on the shade sail.


Stainless Steel D Shackle

Shackle : Use to link shade sail corner to pad eye or eye bolt.


Stainless Steel Diamond Pad Eye Plate

Pad eye : To attach shade sail corner ring to a wall in conjunction with D shackle.


s hook stainless steel

S hook : Use to link shade sail corner to pay eye or eye bolt.


Plain Eye Bolt

Eye bolt : To attach shade sail corner ring through a thimber stud,steel pole or slid support.


Snap Hook DIN5299 Form C Stainless Steel

Snap hook : Used to link shade sail corner to pad eye or tempcrary use.


Stainless Steel 304/316 Swage Jaw Terminal swage socket

Terminals : We offer a range of terminals that are safe, reliable, and do not require any specialised swaging or crimping tools.


Stainless Steel Rigging Screws Jaw To Swage Stud aisi 316 China manufacturer supplier

Rigging screws : Rigging screws are designed to conceal the threads within the pipe for a better, more streamlined appearance to your shade sail rigging,designed to attach to a wide range of stainless steel fixtures and fittings, such as screw eyes and eye bolts.


Shade Sail Hardware Kit Mounting Hardware Stainless Steel China manufacturer

Shade Sail Hardware Kit :

Triangle type set includes:2 x Turn Buckles,3 x Pad Eyes,3 x Carabiner,12 x Screws for fixing eye plates;
Square type set includes:2 x Turn Buckles,4 x Pad Eyes,2 x Carabiner,16 x Screws for fixing eye plates.


 

 

 

If you need help determining the right assembly or size for your application, e-mail our specialists at sales@lg-lifting.com for assistance. 🙂

NEVER EXCEED THE WORKING LOAD LIMIT

NEVER EXCEED THE WORKING LOAD LIMIT

 

 

Working Load Limit
This is the term used throughout the catalog. There are, however. Other terms used in the industry which are interchangeable with the term Working Load Limit. These are: WLL, SWL, Safe Working Load, Rated Load Value, Resulting Safe Working Load, and Rated Capacity.

 

Never exceed the Working Load Limit.

The Working Load Limit is the maximum load which should ever be applied to a product, even when the product is new and when the load is uniformly applied – straight line pull only. Avoid side loading. All catalog ratings are based upon usual environmental conditions, and consideration must be given to unusual condition such as extreme high or low temperatures, chemical solutions or vapors, prolonged immersion in salt water, etc. Such conditions or high-risk applications may necessitate reducing the Working Load Limit.

 

Welding and Modifications Affect the Working Load Limit

Working Load Limit will not apply if product has been welded or otherwise modified. It should also be noted that it is the ultimate responsibility of the end user to determine a Working Load Limit for each application.

 

Components Working Load Limits Must Match.

Make certain that components such as hooks, links or shackles, etc. used with wire rope (or chain or cordage) are of suitable material size and strength to provide adequate safety protection. Attachments must be properly installed and must have a Working Load Limit at least equal to the product with which they are used. Remember: Any chain is only as strong as its weakest link.

 

Raised load.

All employees working with cranes or hoists or assisting in hooking or arranging a load should be instructed to keep out from under the load. From a safety standpoint, one factor is paramount: Conduct all lifting operations in such a manner, that if there were an equipment failure, no personnel would be injured. This means keep out from under a raised load and keep out of the line of force of any load.

 

Shock Loads.

Avoid impacting, jerking or swinging of load as the Working Load Limit could be exceeded and the Working Load Limit will not apply. A shock load is generally significantly greater than the static load. Avoid shock loads.

 

Inspect product regularly.

No product can keep operating at its rated capacity indefinitely. Periodic inspections help determine when to replace a product and reduce rigging hazards. Check for visible damage, cracks, wear, elongation, rust, etc. When in doubt about the extent of the damage, retire the item in question immediately.

Such breaks can cause loads to fail or swing out of control, possibly resulting in serious injury or death as well as major property damage.

 

Therefore:

 ➡ Never exceed the Working Load Limit (WLL).

 ➡ Match components properly.

 ➡ Keep out from under a raised load.

 ➡ Avoid shock loads.

 ➡ Inspect products regularly.

Wire Rope Clips Installation Guide

Wire Rope Clips Installation Guide

 

 

Wire rope clips are widely used for making end terminations. Clips are available in two basic designs; the U-Bolt and fist grip. The efficiency of both types is the same.
When using U-Bolt clips, extreme care must be exercised to make certain that they are attached correctly; Incorrect installation can reduce the working load limit by 40%. Below are general guidelines for installing wire rope clips.

 

First, wire rope clips should be inspected before use to ensure that:

• all markings are legible;
• the wire rope clip is free from nicks, gouges and cracks;
• a wire rope clip with the correct dimension has been selected;
• never repair or reshape a wire rope clip by welding, heating or bending as this may affect the performance.

 

And then, The following is based on the use of proper size U-Bolt clips on new rope.

Step 1. Turn back specified amount of rope from thimble or loop. The first clip must be placed one bridge width from the turned back rope tail or dead end of the rope, Apply U-Bolt over dead end of wire rope – live end rests in saddle (Never saddle a dead horse!) Tighten nuts evenly, alternate from one nut to the other until reaching the recommended torque.

Step 2. When more than two clips are required, apply the second clip as near the loop or thimble as possible, tighten the nuts firmly but not yet to the specified torque.

Step 3. When three or more clips are required, space additional clips equally between first two – take up rope slack – tighten nuts on each U-Bolt evenly, alternating from one nut to the other until reaching recommended torque.

Step 4. Apply first load to test the assembly. This load should be of equal or greater – weight than loads expected in use. Next, check and retighten nuts to recommended torque.

In accordance with good rigging and maintenance practices, the wire rope end termination should be inspected periodically for wear, abuse, and general adequacy. Periodically re-tightening of the nuts must be done at 10.000 cycles (heavy usage), 20.000 e.g. every 3 months, 6 months, annually.

 

Also, the tightening and retightening of the nuts must be accomplished as required.
Use only forged clips for critical, heavy duty, overhead loads, such as support lines, guy lines, towing lines, tie downs, scaffolds, etc.
Malleable clips are to be used for making eye termination assemblies only with right regular lay wire rope and only for light duty uses with small applied loads, such as hand rails, fencing, guard rails, etc.

 

China LG Supply provide you high quality wire rope clips, in a range of sizes and designs, according to your needs and desires.

e.g. malleable wire rope clip din741forged wire rope clips g-450, stainless steel Wire rope clips.

Which type of chain binder should I use?

Which type of chain binder should I use?

 

 

Chain binder also known as a load binder, these two terms are used interchangeably. Chain binders are tools used to bind, clamp, anchor or tie down large cargo loads for transport. There are two basic types of chain binders – lever binders and ratchet binders.

Ratchet Binder

Also called a ratchet chain or ratchet load binder, this device uses a ratcheting action to tension chain and secure cargo. A ratchet binder consists of a ratchet handle and two tension hooks on each end.

When using a ratchet binder, the lever and screw work together and increase the force manually applied to the tie-down assembly. The result is that it takes much less pulling force on the handle to apply tension than you would need with a lever binder.

Ratchets also allow for slower, steadier loading and unloading of forces. This reduces any undue stress or strain on your body. Since ratchet binders are designed with a gear, handle, pawl and end fittings, they will not store up as much energy in the handle as a lever binder will.

Another advantage of ratchet binders is that take-up is safer. The take-up distance of a ratchet binder is typically eight to ten inches – twice that of a lever binder. While take up with a ratchet binder may take a few extra minutes, it is more controlled and ultimately a safer process.

 

Lever Binder

Also called a snap binder, lever chain or lever load binder. Chain-tensioning device uses a leverage action to tighten and secure loads. With a tension hook on each end, this binder requires more strength to tighten than ratchet binders.

A lever binder is made up of a simple machine, a lever, with a tension hook on each end. The lever is used to increase the force applied to a tie down. The lever is hinged and takes up the slack by pulling on one end of the tension hook and will lock itself after a 180-degree rotation of the lever around the hinge. Some of the advantages of choosing a lever-type binder include: Easy installation, Fewer moving parts (less maintenance).

 

Routinely check load binders for wear, bending, cracks, nicks, or gouges. If bending or cracks are present – Do not use load binder.

Routinely lubricate pivot and swivel points of Lever Binders, and pawl part and screw threads of Ratchet Binders to extend product life and reduce friction wear.

Stainless Steel Can Also Be Magnetic

Stainless Steel Can Also Be Magnetic

 

 

Stainless steel is a common name for metal alloys that consist of 10.5% or more Chromium (Cr) and more than 50% Iron (Fe). Although it is called “Stainless” a better term for it is “highly stain resistant.” It is a darker metal. There are two process methods to make it bright, both are surface treatments.

There are three major classes of stainless steel

1. Austenitic: Chromium-nickel-iron alloys with 16%-26% chromium (Cr), 6%-22% nickel (Ni), and low carbon content, with non-magnetic properties. Type 304 ( 18% chromium, 8% nickel ) is the most commonly used grade or composition.
2. Martensitic: Chromium-iron alloys with 10.5%-17% chromium and carefully controlled carbon content. It has magnetic properties! Type 420 is a typical example. It is mostly used in knives and kitchen equipment.
3. Ferritic: Chromium-iron alloys with 17%-27% chromium and low carbon content, with magnetic properties! Type 430 is the most commonly used ferritic.

The magnet test is NOT a correct way to verify stainless steel. Stainless steel is graded by the ingredients and percentages. Stainless is a man made alloy. The nickel content determines the grade of stainless. The chromium content must be 18% or more to be 304 stainless. It starts out as non-magnetic. After a 500 ton press squeezes the nickel it changes the distribution of the nickel. The same is true where the die cuts the stainless increasing the possibility that rust will eventually occur there. All stainless steel is magnetic except austenitic stainless steel which is actually 300 series stainless such as 304 and 316. However, 300 series stainless is non-magnetic only after it is freshly formed. 304 is almost for sure to become magnetic after cold work such as pressing, blasting, cutting, etc. Initially the cold work causes the stainless to pick up foreign particles such as free iron. Then at some spots the metallic crystal structure changes from austenite to martensite. 400 series stainless (ie. martensitic stainless steel) is magnetic. Stainless steel containing more nickel (310 and 316 grades) is more likely to remain non-magnetic after cold work.

All stainless steel is NOT necessarily non-magnetic

It is common for stainless to pick up iron ions from the die and tool used during the stamping process. Iron ions cause magnetism and later may cause minor rust. Our customers use our stainless products and it is very rare that there is a problem with rust unless their application is extremely caustic. If your application is extremely caustic you should require stainless steel that has gone through both the passivation and annealing processes. Passivation enhances the rust resistance of the stainless surface. The passivation process is not meant to completely restore non-magnetic property. It is only a relatively economic way to enhance corrosion resistance. The passivation process standard removes all ions. Annealing is the most effective way to restore non-magnetic property and enhance corrosion resistance. However, in this process if the stainless is not heat treated high enough and then cooled down slowly the corrosion resistance of the stainless steel will be reduced. Annealing stainless is almost cost prohibitive. When both processes are applied, passivation should be done after annealing.

Stainless Trawling Flexible Swivel,with Flat,WDF Type,Trawling Flexible Swivel,trawl swivel,trawling swivel,Fishing Flexible Swivel, fishing line swivel

Stainless Steel Can Also Be Magnetic

        Our stainless products

Slings Warnings

Slings Warnings

Worn-out, damaged, or overloaded slings may fail, causing injury or death!

Always inspect slings before use.

Follow all regulations for inspection and removal of worn-out or damaged slings.

Do not exceed a sling’s Working Load Limit.

Select the correct sling material for the work environment.

Wire Rope Slings

  • Always inspect wire rope slings before use.
  • Never use worn-out or damaged slings.
  • Never overload a wire rope sling.
  • Free slings of all kinks, knots and twists.
  • Do not drop or rest a load on a sling.
  • Balance loads.   Avoid tipping loads.
  • Do not immerse in corrosive solutions.
  • Use pads around sharp corners.
  • Do not force or hammer hooks into place. 

 

Chain Slings

  • Always inspect chain slings before use.
  • Never use worn-out or damaged slings.
  • Never overload or shock load a sling.
  • Free slings of all kinks, knots and twists.
  • Do not drop or rest a load on a sling.
  • Balance loads.   Avoid tipping loads.
  • Do not immerse in corrosive solutions.
  • Use pads around sharp corners.
  • Do not force or hammer hooks into place.
  • Follow all regulations for inspection and removal of worn-out or damaged slings.

 

Web & Round Slings

  • Always inspect web slings before use.
  • Never use worn-out or damaged slings.
  • Never overload or shock load a sling.
  • Balance loads.   Avoid tipping loads.
  • Free slings of all kinks, knots and twists.
  • Do not drop or rest a load on a sling.
  • Avoid prolonged exposure to ultraviolet light.
  • Avoid exposure to temperatures above 200°F.
  • Protect against cuts, punctures and abrasion.
  • Follow all regulations for inspection and removal of worn-out or damaged slings.*