... industry,steel structure ,building and otherrelated fields.Our steel pipe has been exported to many countries,such as UAE, ... 3mm—630mmWall thickness1.8mm—22mmLength0.3—12mSteel GradeAPI 5L:Gr B,X42,X46,X56,X60,X65,X70ASTMA53:GrA,GrBEN:S275, ... USA, Italy, Korea, Indonesia, etc Manufacturing Technological Process ERW Steel Pipe PictureCertificate:Our main customer: Our customersWe always put the quality ...