Product name : Precision steel tube /pipe
Material: 4130 /4140
OD Size:3-140mm
Thickness :0.5-8mm
Material :10#-45#, 16Mn, A53-A369, Cr-Mo alloy, Q195-Q345, ST35-ST52, A213, A315, 30CrMo, 4140,4340,4140 ect
Standard :DIN, GB, JIS, DIN 17175, DIN 2391, GB 5310-1995, GB/T 13793-1992, GB/T 3094-2000, GB/T 8163-1999, JIS G3101
