我公司专业生产 φ 219-1020× 5-12mm 双面埋弧螺旋焊管,年产 5
0000 吨。产品采用美国林肯全线自动双面埋弧焊接,严格按照国际
GB/T9711.1-1997 和石油天然气行业标准 SY/T5037-2000 、和直缝
焊管,直径为33.7,42.3,48.3,50,55,60.3,70,73,76,88,98,102,10
8,114,121,127,133,139,152,159,165,168,177.8,180,194,203,21
9,245,273,325,351,355 |