1.Supply seamless steel pipe 2.TH:2-50mm 3.OD:20-377mm 4.5000Tons in stock 5.best price,qualified pipes &timely delivery RANGE15 NB UP TO 1200 NB IN SCH 5S , 10S ,10, 20 , 40S , 40 , STD , 60 , 80S , 80 , XS , 100 , 120 , 140 , 160 & XXSFORMSEAMLESS / ERW / WELDED IN ROUND & SQUARE .Carbon SteelASTM / ASME A 53 GR. A & B , ASTM A 106 GR. A , B & C . API 5L GR. B , API 5L X 42 , X 46 , X 52 , X 60 ...