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厂家为您介绍如何判断nd钢管好坏

发布时间:2019-02-16人气:34

1、看nd的方度、表面的处理、nd钢管两端的处理、还有很重要的一点就是整只钢管的平直度。

3. Look at the workmanship. Roundness of circular pipe, squareness of square pipe, surface treatment, treatment of both ends of ND steel pipe, and a very important point is the flatness of the whole steel pipe.

4、好的nd钢管厂家拥有好的管理层、好的操作工、好的制度、有一定的知名度和信誉度,产出来的产品自然也能满足客户的高端要求。而一些小的或者不正规的钢管厂家生产出来nd钢管不仅在外观上与好的nd钢管有差距,其坚硬程度、韧性,也有很大的差距。

4. Good ND steel pipe manufacturers have good management, good operators, good system, a certain degree of popularity and credibility, and the products can naturally meet the high-end requirements of customers. And some small or irregular steel pipe manufacturers produced ND steel pipe not only in appearance and good ND steel pipe has a gap, its hardness, toughness, but also a big gap. 

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