astm a 106 grade b carbon steel pipe 10#, 20#, 45#, 16Mn, Q235, Q345, Q195 O.D.: 20-508mm W.T.:1.8- ... or more precision astm a 106 grade b carbon steel pipe1) Material: 10#, 20#, 45#, 16Mn, Q235, Q345, Q1952) Standards: ASTM A53, ASTM ... ) Suitable for high pressure, anti-corrosion and long distance conveyance of gas/fluid8)Application: Petroleum,chemical,power,gas,water,metallurgy,shipbuilding ...