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龍馬直縫雙面埋弧焊鋼管龍馬公司位于孟村希望新區“管件之都”,龍馬鋼管專業生產雙面埋弧焊直縫鋼管,擁有3套9條雙面埋弧焊厚壁直縫鋼管生產線,可生產口徑325-1220mm壁厚8-80mm的雙面埋弧焊厚壁鋼管,可待料加工,可根據要求定做各種大口徑厚壁: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厚壁直縫埋弧焊鋼管,厚壁可達到80mm的雙面埋弧焊厚壁直縫鋼管。主要材質Q235B Q235A Q235C Q235D Q345A Q345B Q345C Q345D 20# L245 X42-80.