... .: 20-508mm W.T.:1.8-100mm or more precision carbon steel pipe making machine1) Material: 10#, 20#, 45#, 16Mn, Q235, Q345, ... max is 12m or as customers' required7) Suitable for high pressure, anti-corrosion and long distance conveyance of gas ... : apply to petroleum, chemical industry, electric power, boiler, high temperature resistant, low temperature resistant, etc..12) Processing Technology: ...