Standard No.:	GB/T 19418-2003
Chinese Name:	钢的弧焊接头 缺陷质量分级指南
English Name:	Arc-welded joints in steel—Guidance on quality levels for imperfections
Professional Classification:	J33 Welding and cutting
Professional Classification:	GB National Standard
ICS Classification:	25.160.50 Brazing and soldering
Issued by:
Issued on:	2003-01-01
Implemented on:	2004-06-01
Status:	VALID
Language:	English
File Format:	PDF
Word Count:
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This standard stipulates the quality levels for imperfections of arc-welded joints in steel. These levels are related to products manufacturing quality, but not related to their applicability (see 3.1).
This standard is applicable to:
——According to welding method and their technology sorts specified in GB/T5185:
11 Metal arc welding without gas shield;
12 Submerged arc welding;
13 Gas shielded arc welding;
14 Non-gas shielded metal arc welding;
15 Plasma arc-welding;
——handiwork, mechanization, and automation welding method;
——all the welding positions;
——butt weld, fillet weld and branch joint;
——steels with thickness scope within 3-63 mm
This standard is not considering metallurgy factors, such as grain size and hardness.