... , BS 1378, ASTM A53-2007Materials: Q195, Q215, Q235, Q295, Q345, 10 #, 20#, 16Mn ect.Thickness: 1.2mm-8.0mmOut Diameter : 1 ... diameter thicknessAvailable steel gradeInches mmtolerance mmtoleranceQ195, Q215, Q235, Q295, Q345, 10#, 20#, 16Mn etc.1/2"21.3+/- 0.5% 1 ... pipes with our diameter range from 21mm( 1/2'' ) up to 273mm (10") , and thickness fron 1.5mm to 8.0mm. The ...