... JIS/DIN/GB 3,quality : ISO9001-ISO2000, 4, meterial :carbon steel 5, enough stock Advanced Bending Technologies is a major supplier ... to customers in international friends. High-precision bends in carbon, alloy, and stainless steels up to 56" in ... GOSTMaterialCarbon steel : A234 WBP, 20G, A105, Q235A/B, WPC ASTM A105Wall thicknessSch5- Sch60, STD, XS, XXSConnectionbutt-welding , welding , seamless ...