This Standard specifies the classification and designation,information to be supplied by the purchaser,dimensional tolerances,manufacturing method,requirement,test method,inspection requirements,packaging,marking and inspection documents of oil hardened and tempered steel wire for mechanical springs (spring wires). This Standard is applicable to manufacture carbon and low alloyed oil hardened and tempered steel wire for technical springs with circular cross section.

This Standard specifies the classification and code, ordering content, diameter, appearance and permissible deviation, manufacturing method, technical requirements, test methods, inspection rules, package, mark and quality certificate of wire for quenched and tempered springs (hereinafter referred to as steel wire). This Standard is applicable to the carbon and low alloy quenched-tempered circularsection steel wire used for manufacturing various mechanical springs.

This Document specifies the basic requirements and methods for the classification of forging functions, as well as the technical conditions, process requirements and acceptance basis for various forgings. This Document is applicable to metal free forgings, die forgings and special forgings.

This document provides the comprehensive list of Chinese National Standards - Category: GB; GB/T, GBT.

This document provides the comprehensive list of Chinese National Standards - Category: GB/T; GBT.

This document provides the comprehensive list of Chinese National Standards and Industry Standards (Total 17,000 standards).

This document provides the comprehensive list of Chinese National Standards - Category: GB, GB/T Series of year 2003.