carbon seamless steel pipe 10#, 20#, 45#, 16Mn, Q235, Q345, Q195 O.D.: 20-508mm W.T.:1.8-100mm or more ... precision low price carbon seamless steel pipe1) Material: 10#, 20#, 45#, 16Mn, Q235, Q345, Q1952) Standards: ... anti-corrosion and long distance conveyance of gas/fluid8)Application: Petroleum,chemical,power,gas,water,metallurgy,shipbuilding,construction,etc.9) Packing ...