High Speed Steel M35 Jiangsu Tiangong Tools Company Limited Base Info Model NO.:M35Standard:ASTM Description Pre:API 5L X70 LSAW Pipe 3PE, Large Diameter LSAW Carbon Steel Pipe/Tube Conveying Fluid Petroleum Gas Oil Next:ASTM A53 Black ERW Steel Pipe Schedule 40, Black Welding Carbon Steel Pipe for Oil and Gas