1 Scope
This standard specifies the classification designation, dimension, shape, weight, permissible deviation, order contents, technical requirements, test methods, inspection rules, packaging, marking and quality certificate of tempered steel wire for bead.
This standard is applicable to carbon round steel wire (hereinafter referred to as wire) for bead wire tendon.
2 Normative References
The following standards contain provisions which, through reference in this standard, constitute provisions of this standard. For dated reference, subsequent amendments to, or revisions of, any of these publications do not apply. However, all parties coming to an agreement according to this standard are encouraged to study whether the latest edition of these documents is applicable. For undated normative references, the latest edition of the document referred to applies.
GB/T 228 Metallic Materials - Tensile Testing at Ambient Temperature (GB/T 228-2002, eqv ISO 6892: 1998)
GB/T 239 Metallic Materials Wire Torsion Test (GB/T 239-1999, eqv ISO 7800: 1984, ISO 9649:1990)
GB/T 2103-1988 General Provisions for Checking, Packing, Marking and Quality Certification of Steel Wire
YB/T 135 Copper Coated Steel Wire - Test Method for Weight of Copper Coating and Composition
YB/T 170.1 Non-alloy Steel Wire rods for Conversion to Wire - Part 1: General Requirements
YB/T 170.2 Non-alloy Steel Rods for Conversion to Wire-Part 2: Specific Requirements for General Purpose Wire Rod
YB/T 170.4 Non-alloy Steel Rods for Conversion to Wire-Part 4: Specific Requirements for Wire Rod for Special Applications
3 Classification and Designation
3.1 Wire is classified into two categories according to the strength grade:
a) Normal tensile strength, NT;
b) High tensile strength, HT.
