GB/T 33164.2-2016: Translated English of Chinese Standard (GBT 33164.2-2016, GB/T33164.2-2016, GBT33164.2-2016): Spring Steels for Automotive Suspension System - Part 2: Hot Rolled Round Steel Bar and Wire Rod
https://www.chinesestandard.net, Jun 23, 2017 - Technology & Engineering - 17 pages
This Part specifies the ordering content, dimensions, shape, weight, technical requirements, test methods, inspection rules, packaging, marking and quality certification of round steel bars and wire rod for spiral spring, torsion bar and stabilizer bar in automotive suspension system.
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Dimension Shape and Weight
Packaging Marking and Quality Certification
Annex A Informative Table of Comparison of the Designations of This Part with the Designations of Domestic and Overseas Standards
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51CrMnV 52CrMnMoV 55SiCrV acid etching macrostructure annealed spring steels arc length austenitic bar and wire bright steels chemical compositions Code Type Code coil billet contract delivery condition Delivery Hardness Designation Hot rolled Designations and Chemical Diagrams GB/T Different coils GB/T Different pcs etching macrostructure test evaluation criteria fully decarburized layer Grade 1 FB Heat Treatment Methods hot rolled round Inert Gas inspection and acceptance Macrostructural Defects mechanical property Nitrogen non-metallic inclusions nondestructive test pc coil pc of steel Press Working Methods purchaser rod of 55SiCr rolled round steel round steel bar S.N. Designation sampling location series Coarse series shearing neatly single side special requirements specified for Group specified in GB/T specified in Table Specimen Numbers Steel and Iron steel Different coils steel Whole coil supplier can ensure surface defects surface of hot surface roughness grade test methods tolerance for length total decarburization depth Type Code Type ultrasonic test