GB/T 1221-2007: Heat-Resistant Steel Bars

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Scope

This Standard specifies the size, shape, technical requirements, test methods,
acceptance rules, packing marks, certificate of quality and other contents of heat-
resistant steel rods (the general name of round steel, square steel, flat steel and
hexagonal steel, hereinafter referred to as steel rods).
This Standard is applicable to hot-rolled, forged steel rods with size (diameter, side
length, thickness or opposite side distance, hereinafter referred to as size) of not more
than 250mm; or cold-processing rods with size of not more than 120mm. After
negotiation between the supplier and the purchaser, the hot-rolled, forged steel rods
with size more than 250mm, and the cold-processing steel rods with size of more than
120 mm can also be supplied.

Basic Data

Standard ID	GB/T 1221-2007 (GB/T1221-2007)
Description (Translated English)	Heat-Resistant Steel Bars
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	H40
Classification of International Standard	77.140.20
Word Count Estimation	24,287
Date of Implementation	2007-12-01
Older Standard (superseded by this standard)	GB/T 1221-1992
Quoted Standard	GB/T 222; GB/T 223.3; GB/T 223.4; GB/T 223.5; GB/T 223.8; GB/T 223.9; GB/T 223.11; GB/T 223.14; GB/T 223.16; GB/T 223.17; GB/T 223.18; GB/T 223.23; GB/T 223.25; GB/T 223.26; GB/T 223.28; GB/T 223.36; GB/T 223.37; GB/T 223.40; GB/T 223.43; GB/T 223.58; GB/T 223.59; GB/T 223.60; GB/T 223.61; GB/T 223.62; GB/T 223.63; GB/T 223.64; GB/T 223.67; GB/T 223.68; GB/T 223.69; GB/T 223.71; GB/T 223.72; GB/T 223.75; GB/T 226; GB/T 228; GB/T 229; GB/T 230.1; GB/T 231.1; GB/T 702-2004; GB/T 704-1988; GB/T 705-1985; GB/T 908-1987; GB/T 1979; GB/T 2101; GB/T 2975; GB/T 6394; GB/T 7736; GB/T 9971-2004; GB/T 10121; GB/T 10561; GB/T 11170; GB/T 15574; GB/T 15711; GB/T 16761-1997; GB/T 17505; GB/T 20066; GB/T 20878; YB/T 5293
Regulation (derived from)	China National Standard Announcement No. 5 of 2007 (No. 105) ("China Standardization")
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 Steel Bars (round, square steel, flat and hexagonal collectively, hereinafter referred to as bars) dimensions, content package marking and quality certification, etc., shape, technical requirements, test methods, acceptance rules. This standard applies to the size (diameter, side, thickness or distance to edge, hereinafter referred to as the size) of not more than 250mm of hot-rolled, forged steel bars or size of not more than 120mm of cold steel bars. Negotiated by both supply and demand, but also supply a size larger than 250mm of hot-rolled, forged steel bars, or a size larger than the cold steel bars of 120mm.