Detailed Product Description 1 Our company is capable of producing the SSAW from 219mm2420m , 2 W.T from 5mm-30mm ,3 The fabrication is carried out according to the international standards of API5L PSL1 ,API5CT, ASTM ,DIN, and national standards of GB/T9711.1~2, SY/T5037 and SY/T5040..4 Strictly adhering to ISO9001:2000 Standards , our company established Quality Management System and we have ...