... W.T.:1.8-100mm or more precision astm a 106 grade b carbon steel pipe1) Material: 10#, 20#, 45#, 16Mn, Q235 ... : ASTM A53, ASTM A106, API 5L, APL 5CT, ASTM A519, and ASTM A213/A213M3) Certification: ISO9001.2000, PED, Mill Test Certificate ... or as customers' required7) Suitable for high pressure, anti-corrosion and long distance conveyance of gas/fluid8)Application: Petroleum,chemical,power ...