... 52, Q 235, Q 195, Q345, 27SiMn seamless steel pipe Production Carbon seamless steel pipe Brand Xin Hai Feng Specification 10.29mm-1016mm ... A519-98 JIS G3441-1994 JIS G3444-1994Seamless steel tubes and pipes forliquid serviceGB/T8163-199910, 20, Q295, Q345ASTM ... andtubing in oil wellsAPE SPEC 5LA, B, X42APISeamles Steel Tubesand Pipes forHigh Pressure BoilerGB5310-199520G, 20MnG, 25MnG, 15MoG, 20MoG ...