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首頁 > 鋼管百科 > 螺旋鋼管焊縫焊接偏差試驗

螺旋鋼管焊縫焊接偏差試驗

日期:2020-02-14

螺旋鋼管焊縫的偏離意味著焊縫的位置偏離焊縫的中心線。焊接時,焊縫角會偏離焊縫,并且沿焊縫沒有焊縫。每個標準中還規定了螺旋鋼管焊縫的焊接:

螺旋鋼管焊縫焊接偏差試驗

1.低壓流體輸送管道用螺旋槽埋弧焊鋼管,SY / T5037-2012標準未規定。

2.石油和天然氣工業用鋼管的交付技術條件第1部分A級鋼管GB / T9711—2011 PSL1標準規定,只要無損檢驗確認焊縫已完全熔透并完全整合, 焊接偏差不能作為拒絕螺旋鋼管的依據。

3.石油和天然氣工業用鋼管的交貨技術條件第2部分B級鋼管GB / T9711—2011 PSL2標準規定,當T≤10時,焊接偏移量不應超過3 mm。當T> 10時,焊接偏移不應超過4 mm。

4.管道鋼管規范API Spec 5L標準規定,只要無損檢測確認焊縫已完全熔透并完全整合,焊接偏差就不能用作拒絕螺旋鋼管的依據。

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