... :8-15mm certificate:API 5L ISO9001-2008 1 inch stainless steel round tubeOD:16-1200mm TW:2. ... 15mmcertificate:API 5L ISO9001-2008 1 inch stainless steel round tube Type1 inch stainless steel round tube Size16-1200mm ... ,,gas,water,metallurgy,ship, building,construction,ectPayment terms 30%T/T or L/C Delivery time(15-20 ... pressure, and international and domestic standards. 1 inch stainless steel round tube