GB/T 28300-2012: Surface quality classes for hot-rolled bars and rods technical delivery conditions

Delivery: 9 seconds. Download (and Email) true-PDF + Invoice.
Get Quotation: Click GB/T 28300-2012 (Self-service in 1-minute)
Newer / historical versions: GB/T 28300-2012

Preview True-PDF

Scope

This Standard specifies the terms and definitions, code, requirements, test,
modification, etc. for the surface quality of hot-rolled bars and rods.
This Standard is applicable to the surface quality classes of hot-rolled bars and rods
with nominal dimension of 5mm ~ 150mm. The hot-rolled bars and rods with nominal
dimension greater than 150mm can also be applicable through the negotiation
between the supplier and the purchaser.
This Standard is applicable to the engineering steel; can also be used for structural
steel or tool steel through the negotiation between the supplier and the purchaser.
This Standard doesn’t include the depth requirements of surface decarburization layer.

Basic Data

Standard ID	GB/T 28300-2012 (GB/T28300-2012)
Description (Translated English)	Surface quality classes for hot-rolled bars and rods technical delivery conditions
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	H40
Classification of International Standard	77.140.60
Word Count Estimation	15,122
Quoted Standard	GB/T 239; YB/T 5293
Adopted Standard	EN 10221-1995, MOD
Regulation (derived from)	National Standards Bulletin No. 9 of 2012
Issuing agency(ies)	General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary	This standard specifies the hot-rolled bars and wire rod surface quality of terms and definitions, code, requirements, testing, finishing and so on. This standard applies to nominal size 5 mm ~ 150 mm hot-rolled bars and wire rod surface quality levels ag