高压锅炉管、石油裂化管、化肥管 材质：20G 16Mn 标准：GB5310-95 GB6479-86 GB9948-88 22?.5-4 51?-6 108?-20 159?-30 299?0-50 25?.5-5 57?-8 114?-20 168?-30 325?-45 28?-5 60?-10 121?-20 180?-30 351?0-36 32?-5 63.5?-12 127?-20 194?-30 377?0-38 38?-6 76?-14 133?-22 203?0-32 402?0-45 42?-6 83?-14 140?-22 219?-45 426?0-30 45?-6 89?.5-20 146?-25 245?-45 480?2-30 48?-6 102?-20 152?-25 273?-50 530?2-30 液压支架管、结构用管合金管 材质：27SiMn 10# 20# 35# 45# 20Cr 40Cr 16Mn 15CrMo 35CrMo 42CrMo 12CrMoV 12Cr1MoV 标准：GB8162-87 GB5310-1995 20,22?-5 48,51?-10 89,95?-25 168,180?-40 402,426?0-50 25,28?-6 54,57?-10 102,108?-30 194,203?-50 450,480?0-50 30,32?-6 60,63?-14 114,121?-30 219,295?-50 510,530?0-50 34,36?-7 68,70?-20 127,133?-30 273,299?-60 560,600?2-60 38,40?-7 73,76?-20 140,160?-35 325,351?-60 630,720?0-40 42,45?-8 80,83?-22 152,159?-40 340,377?0-60 820,900?0-100 材质：20# Dz40 标准：GB3087-1999 GB8163-1999 YB23-70 8?-2 38?-7 95?-20 159?-40 351?0-50 101-2 42?-8 102?-20 168?-40 377?0-50 12?-2.5 45?-8 108?-20 180?-40 402?0-50 14?.5-4 51?-10 114?-20 194?-40 426?0-50 16?-4 57?-10 121?-20 203?0-45 480?2-45 18?-5 60?-12 127?-25 219?-50 530?2-40 22?-5 63.5?-14 133?-25 245?-50 450?2-40 25?-6 76?-14 140?-25 273?-50 610?2-30 28?-6 83?-16 146?-20 299?0-50 430?2-30 32?.5-6 89?-20 152?-30 325?-50 720?2-30 备注：以上管材均为正宗新货，附原始材质单及复印件，节假日不休！