A等级的 易燃液体或气体钢管 (管线管) - (标准:PN-EN 10208-1)
生产方法及用途
制造方法:
HFW 高频焊接,
SAW 埋弧焊,
COW 组合焊接.
螺旋管:钢带的焊缝需要提前商量
用于天然气和石化行业。例如:用于向公众分发天然气。
钢种:
L210GA, L235GA, L245GA, L290GA, L360GA
尺寸
- 外直径: 33,7 mm 至1626 mm
- 厚度: 至40 mm
- 长度: 6000 mm 至12000 mm
实验及要求:
密封性 – 管应该通过水压试验 (7Mpa)或者电磁实验.
直线度- 0,2 %沿整个长度, 测点< 3 mm/m
B等级的易燃流体管道用钢管(标准:PN-EN 10208-2)
生产方法及用途:
制造方法:
HFW 高频焊接,
SAW 埋弧焊,
COW 组合焊接.
螺旋管:钢带的焊缝需要提前商量.
B等级的钢种类要求,化学成分要求 机械要求比A级高。因此允许使用于运输易燃物质。
钢种:
L 245 NB, L 290 NB, L 360 NB, L 415 NB
尺寸:
- 外直径: 33,7 mm 至1626 mm
- 厚度: 40 mm
- 长度: 6000 mm do 12000 mm
试验及要求:
密封性 – 管应该通过水压试验 (7Mpa)或者电磁试验.
直线度- 0,2 %沿整个长度, 测点< 4 mm/m
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