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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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昱通管道

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 > 螺旋鋼管技術簡介

螺旋鋼管技術簡介

日期:2019-12-31

螺旋鋼管技術的簡要介紹如下:

第一:外觀質量
1.表面上不應存在超過標稱壁厚偏差的裂紋,打結,褶皺和其他缺陷。
2.不應有深度超過6.4毫米的彈坑。凹坑的長度不應超過0.5D。3.焊接鋼管的高度應小于或等于3.5mm。

螺旋鋼管技術簡介

第二:外徑和壁厚要求
1.管道的公稱公稱直徑和公稱壁厚應符合SY / T6475的有關要求。
2.管道外徑偏差應符合SY / T5037-2012第2頁表1的要求。
3.管壁厚度偏差應符合SY / T5037-2012第2頁表2的要求。
4.管道橢圓度要求:在管端長度的100mm范圍內,最大外徑不應大于公稱外徑的1%,最小外徑不應小于公稱外徑的1% 。
5.管端是扁平端鋼管。

主站蜘蛛池模板: | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |