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.
To deal with corrosion at weld joint, shielded inert gas are will be used and the insulation grade raised.
采用非熔化极惰性气体保护焊，并提高焊口绝缘等级，克服焊口的晶间腐蚀。
3
The national standard is suitable for welded joint of carbon steel and low alloy steel with gas welding (being used for sheet metal), manual arc welding and gas - shielded welding.