... , ANSI, GB,DIN,JIS,BS GB8162, DIN1626 Material API 5L Grade B/ASTM A106B,BS1387,10#,20#,45#,ASTM A53(A ... ,B) Q235,Q345,16Mn Outer diameter 25~720mm Wall thickness 3~ ... , heat exchange tubes, seamless pipe MOQ 5 ton Quality First Grade Delivery Time 15~25 days Yearly capacity 20000tons carbon steel ...