我公司生产精密无缝钢管、珩磨钢管、合金管。供应各种中厚壁高压锅炉无缝钢管。石油裂化管。化肥专用管。标准GB5310,GB3087,GB9948,GB6479。外径；102mm--299mm--630mm。壁厚；10mm--50mm。大量现货库存，特殊管也可定做，质优价廉，量大优惠。出口钢管《出口钢管执行标准ASTM A106 Gr.B;ASTM A53 GR.B;API SPEC 5L GR.B;BS1387;ASTM A179;ASTM A192;ASTM A335;ASTM A333;DIN1629》。主要产品有1.　一般用途无缝钢管ASTM A53 GR.B，钢号：SA53 B，2.高温作业用无缝钢管ASTM A106 GR.B， 6.-40℃-101℃低温作业用无缝钢管ASTM A333，钢号:GR.A，GR.1，GR.6，GR.7，GR.3,规格:1/4″-28″,13.7-711.2mm,-40℃-101℃低温作业用无缝钢管，执行标准：ASTM A333-2000，产品牌号：GR.A，GR.1，GR.6，GR.7，GR.3，7.德标DIN2448/1629无缝钢管，钢号：St37,St44,St52。I precision seamless steel pipe company, honing steel, alloy pipe. Supply all kinds of high-pressure boilers in the thick-walled seamless steel tubes. Cracking of oil. Exclusive possession of chemical fertilizers.