English Name:Welding and allied processes - Recommendations for joint preparation - Manual metal-arc welding, gas-shielded metal-arc welding, gas welding, TIG welding and beam welding of steels.
The range of cleaning (width) shall not be less than 10mm for manualwelding, not less than 20mm for gas shielded welding.
清理范围(宽度)对于手工焊不小于10 mm，气体保护焊不小于20 mm。
3
The national standard is suitable for welded joint of carbon steel and low alloy steel with gaswelding (being used for sheet metal), manual arc welding and gas - shielded welding.