Other Oil Field Equipments 중국 공장 Gi 원형 파이프 ASTM A53 Sch 40 용융 40X60 4 X 4 Inch Pre Galvanized Square 0.65 직사각형 강관 1X1 Square Steel Tubing
Stainless Steel Pipes ASTM A36 A179 A192 1000mm LSAW SSAW Large Diameter Spiral Welded Hot Cold Round Square Rectangular Metal Seamless Tube Galvanized Carbon Stainless Steel Pipe