... -1995, ASTM A106-1999219-824mm, 24-78mmUsed in automobile industry,chemical industry,infrustructure & other related industriesFertilizer dedicated pipe10 ... 15Cr2Mo 1Cr5MoGB6479-200025-426mm, 6-40mmMainly used in chemical equipment,fertilizer equipment and pipelines under high pressure ... -Q345ASTM, GB0.8-12mm,19-275mmMainly used in petroluem,chemical,power,gas,water,shipbuiding,construction,etcLow & mid ...