青云翻译

Material must have a manufacturer's quality certificate. Carbon steel and stainless steel welding rod should be consistent with current national standard "carbon steel electrode" GB5117, "stainless steel welding rod" GB983, wire should be consistent with current national standard "wire welding appli

Materials must have a certificate of quality of factory. Carbon steel and stainless steel electrode should be consistent with existing national standards of the carbon steel electrodes, GB5117, GB983 the stainless steel electrode, should be consistent with existing national standards of the welding

The material must have the factory quality certificate.The carbon steel and the stainless steel welding rod should conform to the present national standards "Carbon steel Welding rod" GB5117, "Stainless steel Welding rod" GB983, the welding wire should conform to the present national standards "Weld

Material must have a factory certificate of quality. carbon steel and stainless steel welding rod should be consistent with existing national standards of the carbon steel welding rods GB GB of 5117, the stainless steel welding rods, 983 welding wire should be consistent with existing national stand

Materials must have a certificate of quality of factory. Carbon steel and stainless steel electrode should be consistent with existing national standards of the carbon steel electrodes, GB5117, GB983 the stainless steel electrode, should be consistent with existing national standards of the welding