How are automatic welding tubes calculated?

How are automatic welding tubes calculated? For the evaluation of automatic welding pipe parts, the country has developed a set of stainless steel pipe grade standards.

Everything in the world is good or bad, and so are automatic welding pipe parts. There are ratings. Only stainless steel that meets certain quality standards can be graded. In this regard, the country has developed a set of stainless steel pipe grade standards. A good understanding of these standard requirements helps us select and identify better steel products. Today, let's take a look at the quality standards for automatic welding pipe grading.

1, automatic welding pipe products must meet the requirements of GB /t17395-2008: outer diameter 70±0.3mm, wall thickness tolerance 2.2±0.2mm, length tolerance 4060-0 / 5mm;

2, bending degree in line with the E3 standard (0.1% of the total bending volume);

3, the ellipse degree meets NR2 (the ellipse degree is not greater than 5% of the allowable deviation of the outer diameter);

4, exterior polishing RA ≤ 0.8 (or RA≤0.1);

5, stainless steel parts welding after the completion, should be timely clean the surface. Stainless steel pipe manufacturer.

6, stainless steel pipe surface treatment is completed, the finished product should be protected to prevent human contact and oil, dust and other secondary pollution.