We have our Sold Secure and Secured-by-Design certificates available online so you can print your own copies, should you need them to prove certification for your insurance company etc. Minimum Breaking Load (MBL) is the minimum force of which the chain must withstand before failure. The mean stress at this load is 800n/mm2 (MPA). The minimum elongation before failure is 20%. These high grade Protector 16mm, 19mm, 22mm Titan and 25mm Titan chains really are impossible to bolt-crop by hand. The thieves use Irwin Record 42" bolt croppers as their tool of choice. They are expensive, but of course they don't always buy them... The Protector 16mm and 19mm and 22mm and 25mm chains are all impossible to crop even with this powerful tool. Indeed, if you keep trying to crop one of these chains, it is likely to be the jaws of the bolt croppers that break! If you are considering a chain from another manufacturer, ask if they will guarantee it as impossible to crop with Irwin Record 42" bolt croppers.

Working Load Limited (W.L.L.) is the maximum load which chain or components are designed to sustain in lifting use. The mean stress at this load is 200n/mm2 (MPA) and is based on a factor of safety of 4:1. Single Leg, 2 Leg, 3 Leg and 4 Leg Lifting Slings are available with various fittings... Clevis Sling Hook Good slinging practice must ensure that the load is as safe and secure in the air as it was on the ground and that no harm is done to the load, lifting equipment, other property or persons. This document is issued in accordance with the requirements of Section 6 of the Health and Safety at Work etc Act 1974, amended March 1988. It outlines the care and safe use of general purpose CHAIN SLINGS and is based on Section 13 of the LEEA Code of Practice for the Safe Use of Lifting Equipment.* It should be read in conjunction with the requirements for general purpose slinging practice, given overleaf, which form an integral part of these instructions. This information is of a general nature only covering the main points for the safe use of chain slings. It may be necessary to supplement this information for specific applications. When using chain slings always:

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a b "Trademark Assignment Abstract of Title". United States Patent and Trademark Office. 12 November 2018 . Retrieved 28 April 2019. RiDE Magazine Best Buy and Recommended awards for our Protector 19mm and Protector 16mm chains, respectively. More details below. Video: Help on choosing the right chain: Protector Range Overview Manufacturing Proof Force (MPF) is the force to which during manufacture the chain is subjected to. The mean stress at this load is 500n/mm2 (MPA) which is 2.5 times the working load limit. Grade 80 (gr 8 / GR:80) advertised here (also know as Grade T), though we also supply Grade 100 chain slings (GR:100 / GR 10). Police Approval: The Protector 11/13/16/19/22mm chains are all accredited under the UK Police Secured-by-Design initiative. They are all Police Preferred Specification.

Beware that the largest chains here are too big to fit many 'ordinary' ground anchors. The 19mm and smaller chains fit all our ground anchors, but the 25mm will only fit the Torc Mega anchor plus the Sub Major out of our range, for example. Note that the 25mm is not recommended with the Maxi as it is very tight fit and manufacturing tolerances mean it is unwise to expect it to fit. Slings are available in single, two, three and four leg or endless form. In practice it will be found that chain, wire rope and fibre rope slings are available in any of these configurations but that flat woven webbing is limited to single leg and endless whilst roundslings are only supplied in endless form. The maximum load that a sling may lift in use will be governed by the slinging arrangement (mode of use) and may vary from the marked SWL.** In the case of textile slings the SWL for the various modes of use is usually given on the information label. In other cases it is necessary to multiply the marked SWL by a mode factor.*** A: It is sold per meter, so for example if you want a single 10 meter linear length in 1 piece simply add 10 into the quantity box of the diameter chain you require and we will supply 1 x 10 meter lengthMinimum Breaking Load (M.B.L.) is the minimum force which chain or components must withstand before failure. The mean stress at this load is 800n/mm2 (MPA). The minimum elongation before failure is 20%. Stainless A4 AISI 316 marine grade is ideal for corrosive environments or just for very long life outdoors.

The following table shows the weights per metre for each of the Protector chains and the normal maximum length we can supply: Chain Except where special provision is made, do not allow anyone to pass under or ride upon the load. The area should be kept clear. The Protector 13mm chain has the following link dimensions (nominal): 106 x 48mm outside; 80 x 22mm inside. It is constructed from 13mm diameter bar and has a fabric sleeve that is usually bronze in colour (adding about 4mm maximum to the width noted above). If you've got a round hole 52mm diameter, the 13mm chain should slide through OK. It will also fit through a rectangular hole, e.g. 52mm x 35mm, but that requires the links to settle against each other, and more closely as the slot gets narrower, down to the absolute minimum of around 52mm x 30mm high (where it would be quite fiddley to get it to go through). Also available as a Noose Chain - see below.Slings should only be used by trained operatives who understand the methods of rating and application of mode factors.**** Safe use of Slings The following three simple rules will ensure that the sling is not overloaded. In some cases this will mean that the sling will be under utilised although this is unlikely to hinder the user unduly. Where the maximum utilisation is required reference should be made to a Competent Person who understands the factors involved and who can perform the necessary calculations. (1) For straight lift never exceed the marked SWL and in the case of multi-leg slings the specified angle or range of angles. (2) When using slings in choke hitch multiply the marked SWL by 0.8 to obtain the reduced maximum load the sling may lift ie reduce the safe working load by 20%. (3) With multi-leg slings, when using less than the full number of legs, reduce the maximum load in proportion to the number of legs in use. Simply multiply the marked SWL by the number of legs in use expressed as a fraction of the total thus: one leg of a two leg sling = ½ marked SWL, three legs of a four leg sling = ¾ marked SWL and so on. Operative Training