Casing steel pipe( seamless) Outside Diameter: 114mm ( 4inch) --- 508mm ( 24inch) Wall Thickness: 5mm---16mm Grade: H40, J55, K55, L80, N801, N80Q, P110, C90, Q125, T95 SIZE NO. ( O.D x....
Hongkong Ruitong Industrial Limited, a subsidiary of " Magtalc Corporation" . China Haicheng City Magtalc Corporation, ( Mobile: + 8613941205541, contact-Mr. Richard Chang, Office line: + 86-412....