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龙马直缝双面埋弧焊钢管龙马公司位于孟村希望新区“管件之都”,龙马钢管专业生产双面埋弧焊直缝钢管,拥有3套9条双面埋弧焊厚壁直缝钢管生产线,可生产口径325-1220mm壁厚8-80mm的双面埋弧焊厚壁钢管,可待料加工,可根据要求定做各种大口径厚壁:325,350, 351, 355,377,402,406,426, 450, 457,478,480,490*8-30 500,508,530,560,580,590,600,610, 630,660, 711 *8-80 820,920,1020,1120,1220*8-80厚壁直缝埋弧焊钢管,厚壁可达到80mm的双面埋弧焊厚壁直缝钢管。主要材质Q235B Q235A Q235C Q235D Q345A Q345B Q345C Q345D 20# L245 X42-80.