... .65~60mmLength: Maximum of 11.8m ProductStandardSteel GradeApplicationLine PipeAPI 5L, ASTM A53/A106, DIN1629, JIS G3454, JIS3466A, B, X42, X46 ... , 20#, 20G, 20MnG, 20MoG, 15CrMoG, 12Cr1MoVGLow & medium & high pressure boiler header, steam pipe, heating pipeStructure PipeASTM A53/A106, GB8162A, B ... a form until the steel is shaped into a hollow tube. The seamless pipe is then finished to dimensional and ...