Standard No.:	YB/T 4251-2011
Chinese Name:	电梯门机用钢丝绳
English Name:	Steel wire ropes for lift door operator
Professional Classification:	H49 Steel wire and wire rope
ICS Classification:	77.140.65
Issued by:
Issued on:	2011-12-20
Implemented on:	2012-07-01
Status:	VALID
Language:	English
File Format:	PDF
Word Count:
Price(USD):	please email coc@codeofchina.com for quotation
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Steel wire ropes for lift door operator

1 Scope

This standard specifies the minimum technical requirements for the production and inspection of steel wire ropes for lift door operator.

2 Normative references

The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.

GB/T 1839 Zinc coated steel wire test method for gravimetric determination of zinc coating (GB/T 1839-2009, ISO 1460: 1992, MOD)
GB/T 2104 Steel wire ropes - Packing, marking and certificate - General requirements
GB/T 4354 Hot rolled quality carbon steel wire rods
GB/T 8358 Method of breaking tensile test for steel wire rope (GB/T 8358-2006, ISO 3108: 1974, NEQ)
GB/T 8706 Steel wire ropes - Vocabulary, designation and classification (GB/T 8706-2006, ISO 17893: 1974, IDT)
GB/T 12347 Steel wire ropes - Bending fatigue testing
GB/T 21965 Steel wire ropes - Vocabulary for acceptance and defect (GB/T 21965-2008, ISO 2532: 1974, NEQ)
SH/T 0387 Surface grease for steel wire ropes

3 Terms and definitions

For the purposes of this standard, the terms and definitions given in GB/T 8706 apply.

4 Classification

4.1 The steel wire rope structure is classified into 6×7-WSC and 6×19-WSC.

4.2 The designation of steel wire ropes shall meet the requirements of GB/T 8706.