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歡迎來到鹽山昱通螺旋鋼管實體生產企業!

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鹽山昱通管道

專業生產銷售大口徑厚壁國標螺旋鋼管,廠內加工防腐/保溫/涂塑

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首頁 > 鋼管百科 > 螺旋鋼管的形狀要求

螺旋鋼管的形狀要求

日期:2020-01-14

螺旋鋼管焊縫外觀基本要求:無損檢測前的螺旋鋼管,焊縫外觀檢查應符合要求。

螺旋鋼管焊接外觀和焊接接頭表面質量的一般要求如下:焊接應外觀良好,每側凹槽邊緣的寬度應遮蓋陰影2mm為宜。角焊焊腳的高度應符合設計要求,形狀應平穩過渡。

螺旋鋼管的形狀要求

焊接接頭表面要求:

(1)不允許出現裂紋,缺乏熔合,氣孔,爐渣,飛濺。

(2)設計溫度低于-29度的管道,不銹鋼和硬化合金鋼管往往具有較大的焊接表面,沒有咬邊。其他材料管的焊縫咬邊深度應大于0.5mm,連續咬邊長度不應超過100mm,并且焊縫咬邊的兩側始終長到焊縫全長的10%。

(3)不得低于管子焊接表面的表面。焊縫補強不得超過3mm(開槽后焊縫最大寬度)。

(4)焊接接頭的反面壁厚應小于10%且不大于2mm。

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