Stainless Steel Pipes API 5L Psl1/2/ASTM A53/A106 Gr. B/JIS DIN/A179/A192/A333 X42/X52/X56/X60/65 X70 不锈钢/黑色/镀锌/圆形无缝/焊接碳钢管
Other Oil Field Equipments API 5L A106 A53 304 316L 不锈钢/Gi/ERW/黑色/油/合金/方/圆/精密/碳/不锈钢/镀锌/铝/铜/螺旋/无缝/焊接/钢管
Stainless Steel Pipes GOST Seamless Pipe Black Carbon Steel ASTM A36 A106 St52 St37 16mn Scm440 Scm 420 Ss440 API K52 X56 X52 Gr. B A53 Sch40 Sch80 Seamless Steel Tube Ss Welded Tube