... , or paintedC: Length of each pipe: 500mm-16,000mmD: Steel grade: 10#, 20#, A106B, A53B, Q195 Q235, Q345, ST37-2, ST52 ... , A312, 304, 316 etcE: Conforms to international standards, like: ASTM A53, ASTM A500, ASTM A513, ASTM A312, BS1387, DIN2391, DIN2394, DIN17175, JIS G3452, EN10210, EN10219 ... STS49,STPT49) etc.c. ASTM/AISI Standard10#(ASTM a106/53 Gr.B,A192,A179-C),20#(ASTM A106/53 Gr.B, A178-C,A210-A ...