ISO/TC 111 - Round steel link chains, chain slings, components and accessories

This document specifies the requirements, methods of rating and testing of single, double, three and four leg welded chain slings of grade 8 using components such as sling chains according to ISO 3076 together with links according to ISO 16798, hooks according to ISO 7597 and forged components according to ISO 8539. NOTE 1 For special lifting purposes not covered by this document, additionally intermediate links can be used, for example to connect components to each other having different working load limit. The range of nominal diameter, dn, covered by this document is from 4 mm to 45 mm. Chain slings according to this document are for use in the temperature range ?40 °C to +400 °C according to ISO 3056. NOTE 2 Concerning the use and maintenance of chain slings of grade 8, see ISO 3056. Chain slings according to this document comply with the general conditions of acceptance of ISO 1834 and are used for symmetrically distributed loads only. NOTE 3 For rating of chain slings with asymmetrically distributed loads, see ISO 3056. This document does not apply to mechanically joined chain slings. NOTE 4 For mechanically joined chain slings, see ISO 7593.

This document specifies the requirements for medium tolerance sling chains of grade 4 from stainless steel for use preferably in chain slings of grade 4 from stainless steel or for other lifting purposes. The range of nominal diameter, dn, covered by this document is from 4 mm to 22 mm. These sling chains are round steel short link chains with a nominal pitch, pn = 3 × dn, electrically welded, solution-annealed and tested. They are for use in the temperature range ?100 °C to +400 °C. They comply with the general conditions of acceptance of ISO 1834. NOTE 1 Because sling chains are solution-annealed in the finished condition, they can be used without restrictions with regard to the corrosion resistance of the steels according to 5.2. Higher grades of stainless steel chains are achieved by cold drawing of the wire prior to the chain manufacturing. Therefore, solution annealing is not possible without reduction of strength. The weld seam, in particular, represents a critical area with regard to the corrosion resistance. NOTE 2 Resistance butt welding and flash welding are listed in ISO 4063.

ISO/TR 21704:2017 contains investigations and investigation results on toughness of round steel link chains, tested with sub-size specimens. It applies to round steel link chains for hand operated chain hoists of grade TH and VH and for sling chains used for chain slings of grade 8. NOTE 1 Associated International Standards are ISO 16877, ISO 16872 and ISO 3076. In future it is intended to implement the results on toughness derived in this document in new standards. Eleven steels, provided by four manufacturers, were tested to find a test regime on sub-size specimens and requirements on the notch impact toughness values at design temperature which resulted out of the tests. These requirements are adjusted to the toughness values of full size ISO-V specimens. NOTE 2 The requirements are also valid for other cross sections of the chain than round.

ISO 16872:2014 specifies the requirements for fine-tolerance hoist chains of grade VH for use as load chains in hand operated chain hoists for lifting purposes. They are round steel short link chains, electrically welded, heat treated, and tested; they comply with the general conditions of acceptance of ISO 1834. NOTE 1 The letter "V" expresses the grade in accordance with ISO 1834. NOTE 2 The letter "H" expresses that these hoist chains are for hand operated hoists only. NOTE 3 Resistance butt welding and flash welding are listed in ISO 4063. The range of nominal sizes covered by this International Standard is from 3 mm to 13 mm. Fine-tolerance hoist chains, according to this International Standard, are for use in the temperature range −10 °C to 150 °C.

ISO 16877:2014 specifies the requirements for fine-tolerance hoist chains of grade TH for use as load chains in hand operated chain hoists for lifting purposes. They are round steel short link chains, electrically welded, heat treated, and tested; they comply with the general conditions of acceptance of ISO 1834. NOTE 1 The letter "T" expresses the grade in accordance with ISO 1834. NOTE 2 The letter "H" expresses that these hoist chains are for hand operated hoists only. NOTE 3 Resistance butt welding and flash welding are listed in ISO 4063. The range of nominal sizes covered by this International Standard is from 3 mm to 13 mm. Fine-tolerance hoist chains, according to this International Standard, are for use in the temperature range −10 °C to 200 °C.

ISO 7597:2013 specifies requirements for forged steel lifting hooks with latch of grade 8 having eye or clevis and pin up to 63 t working load limit (WLL), mainly for use in chain slings according to ISO 4778 and ISO 7593, for use in steel wire rope slings according to ISO 7531, for use in textile slings, and intended for lifting objects, materials or goods.

ISO 3076:2012 specifies the requirements for medium tolerance sling chains of grade 8 for use in chain slings and for general lifting purposes. They are round steel short link chains, electrically welded, heat treated and tested; they comply with the general conditions of acceptance of ISO 1834. The range of nominal sizes covered by ISO 3076:2012 is from 4 mm to 45 mm. They are for use in the temperature range of minus 40 °C to to plus 400 °C.

ISO 3266:2010 specifies the general characteristics, performance and critical dimensions necessary for interchangeability and compatibility with other components, of forged steel eyebolts grade 4 for general lifting purposes. These eyebolts can be used for axial and inclined loading. ISO 3266:2010 specifies the dimensions of the eyes of eyebolts permitting direct connection with shackles of the same working load limit as those defined in ISO 2415. These dimensions also allow designs with a larger eye which can permit direct connection with sling hooks of similar working load limit. ISO 3266:2010 covers all significant hazards, hazardous situations and events relevant to eyebolts grade 4. ISO 3266:2010 is applicable to eyebolts grade 4 for use in the temperature range of -20 şC to 200 şC. ISO 3266:2010 is not applicable to eyebolts which are not forged in one piece. ISO 3266:2010 is not applicable to forged steel eyebolts grade 4 manufactured before the date of its publication as an International Standard.

ISO 8539:2009 specifies general requirements for forged steel components of Grade 8 up to 63 t working load limit, mainly for use in chain slings, steel wire rope slings, and textile slings intended for lifting objects, materials or goods. ISO 8539:2009 is not applicable to hand-forged components and welded links, and neither is it applicable to other welded components.

ISO/TR 23602:2005 presents an investigation to quantify the required material toughness for the operational safety of round steel chains.

ISO 16798:2004 specifies requirements for forged or welded steel master links, intermediate master links, master link assemblies and lower terminal links of Grade 8 up to 132 t WLL (working load limit), mainly for use in chain slings in conformance with ISO 4778 and ISO 7593, steel wire rope slings in conformance with ISO 7531, and textile slings in conformance with EN 1492-1 and EN 1492-2, intended for lifting objects, materials or goods. It is not applicable to hand-forged links.

ISO 2415:2004 specifies the general characteristics of forged dee and bow shackles in a range of sizes having working load limits of from 0,32 t to 100 t and in Grades 4, 6 and 8, and presents their performance and critical dimensions necessary for their interchangeability and compatibility with other components.

ISO 1837:2003 establishes the nomenclature for various types of hooks used on lifting equipment.

This International Standard specifies requirements for fine-tolerance hoist chain of Grade T (types T, DAT and DT) for use with manually operated or power-driven chain hoists1). It is applicable to electrically welded, round, steel short-link chain, heat-treated and tested in accordance with the general conditions of acceptance of ISO 1834, in the nominal chain size range from 3 mm to 22 mm. NOTE Type T chain, but not type DAT or DT, may be used in lifting equipment other than chain hoists. Chain of grades TH and VH, intended specifically for use in hand-operated hoists, will be the subject of future International Standards.

This International Standard specifies the general conditions of acceptance for electrically welded round steel short link chain for lifting purposes. It includes medium tolerance chain for use in chain slings and for general lifting purposes, and fine tolerance chain for use with chain hoists and other similar lifting appliances. It is applicable to short link lifting chain in accordance with ISO 1835, ISO 3075, ISO 3076 and ISO 3077.

Specifies the requirements, methods of rating and testing of single, two, three and four branch (or leg) chain slings assembled by methods other than welding. Does not apply to chain slings assembled by welding (see ISO 4778), to slings designed to have branches of unequal nominal reach, to endless slings, or to slings designed for special applications.

Specifies requirements for lifting hooks as shown in the figure, in a range of sizes having performance compatibility with the corresponding nominal sizes of grade M(4) chain. Performance compatibility encompasses component strength and the necessary physical dimensions.

This second edition cancels and replaces the first edition (ISO 3056:1974), of which it constitutes a technical revision. Constitutes a guide to the selection, use, inspection, testing, maintenance and repair of non-calibrated, round steel, short link chains and chain slings. Lifting chains and chain slings may be governed by national and local laws and regulations.

Specifies the main principles for the use, inspection, in-service testing and maintenance of chains operating over chain wheels. The principal applications include manual and power driven hoists. Lifting chains may be governed by national and local laws and regulations.

Specifies requirements for point eye hooks capable of being used for lifting freight containers of up to 30 tonnes which are equipped with top corner fittings complying with ISO 1161. Any standard hook satisfying these basic requirements may be selected.

ISO 16877:2008 specifies the requirements for fine-tolerance Grade TH hoist chains, for use as load chains in manually operated chain hoists. It is applicable to these round steel short link chains, electrically welded and heat treated, tested to and compliant with the ISO 1834 general conditions of acceptance. The range of nominal sizes of hoist chains covered by ISO 16877:2008 is from 3 mm to 13 mm. They are for use in the temperature range -10 °C to 200 °C.

ISO 16872:2008 specifies the requirements for Grade VH, fine‑tolerance hoist chains, for use as load chains in manually operated chain hoists. It is applicable to these round steel short link chains, electrically welded and heat treated, tested to and compliant with the ISO 1834 general conditions of acceptance. The range of nominal sizes of hoist chains covered by ISO 16872:2008 is from 3 mm to 13 mm, for use in the temperature range -10 °C to 150 °C.

This second edition cancels and replaces the first edition (ISO 2415:1973), ISO 2731:1973 and ISO 2791:1973, of which it constitutes a technical revision. Specifies the characteristics, performance and critical dimensions necessary for interchangeability and compatibility with other components in a range of sizes having working load limits from 0,63 to 100 t, and in grades M(4), S(6) and T(8). In the case of dee shackles for use with forged steel lifting hooks it may be necessary to use an intermediate component to make the connection.

Specifies requirements for lifting hooks as shown in the figure, in a range of sizes having performance compatibility with the corresponding nominal sizes of grade T(8) chain. Performance compatibility encompasses component strength and the necessary physical dimensions.

Specifies requirements for forged lifting componentes for use in chain sling assemblies in a range of sizes having performance compatibility with the corresponding nominal sizes of grade T(8) chain. Performance compatibility encompasses component strength and the necessary physical dimensions.

Specifies the basic dimensions, material, lifting capacity and conditions of use. The eyebolts may be used for vertical and inclined lifting (see the annex). Applies to eyebolts with and without recessed collar, which are forged in one piece. The eyebolts are suitable for eyehooks of the same lifting capacity.

This second edition, which cancels and replaces ISO 3077:1980, incorporates draft Amendment 1. Specifies the requirements for lifting chains, grade T (8), non-calibrated, for use on cranes, in chain slings and for general lifting purposes. These are electrically welded round steel short link chains, fully heat treated and tested complying with ISO 1834. The range of sizes covered is from 5 to 45 mm. The annex gives a range of temporary additional sizes 6 to 35 mm.

This second edition, which cancels and replaces ISO 3077:1980, incorporates draft Amendment 1. Specifies the requirements for lifting chains, grade T (8), accurately calibrated, for use as load chain in chain hoists and similar appliances. These are electrically welded round steel short link chains, fully heat treated and tested complying with ISO 1834. The range of sizes covered is from 4 to 20 mm. The annex gives a range of temporary additional sizes 6 to 19 mm.

Specifies the requirements, methods of rating and testing of single, two, three and four branch (or leg) welded chain slings. Does not apply to mechanically joined slings or welded slings having branches of unequal nominal reach.

Specifies the requirements for lifting chains, grade M (4), non-calibrated, for use on cranes, in chain slings and for general lifting purposes. These are electrically welded round steel short link chains, fully heat treated and tested complying with ISO 1834. The range of sizes covered is from 5 to 45 mm. The annex gives a range of temporary additional sizes 6 to 46 mm.

Specifies the requirements for lifting chains, grade S (6), non-calibrated, for use on cranes, in chain slings and for general lifting purposes. These are electrically welded round steel short link chains, fully heat treated and tested complying with ISO 1834. The range of sizes covered is from 5 to 45 mm. The annex gives a range of temporary additional sizes 6 to 30 mm.

Specifies the nomenclature and the symbolization of hooks of all types used on lifting appliances of all kinds. A table shows hooks according to the attachment and shape.