These stainless steel pipe knowledge, you know?

1. What's the difference between stainless steel square tube and round tube?

In fact, the process of stainless steel square tube is the same as the process of round tube, but the mister produces round tube, and then uses the mold to press the finished square tube.

2. What is the mold fee?

Some customers need pipes of special specifications. In addition, the factory does not have relevant moulds, so it cannot produce products of this specification. Therefore, we need this money to buy moulds to produce pipes, which is the cost of moulds.

3. Deliver according to actual weight?

Generally, the weight of the goods signed in the contract is calculated according to the theoretical weight, so when the actual transaction, the actual weight will be different from the theoretical weight, so when the amount is settled, the actual weight will be used to avoid disputes.

4. Is stainless steel magnetic?

In theory, austenitic stainless steel is not magnetic, martensitic and ferritic stainless steel will be magnetic.

5. What are the states of the surface of the stainless steel tube?

Polishing, pickling, sandblasting, etc.

6. Why is there uneven wall thickness?

This is because of the existence of error, resulting in stainless steel tube can not be perfectly round, that is to say, there is a phenomenon of uneven wall thickness of stainless steel tube, but as long as within the tolerance range, this uneven is allowed.

7 seamless pipe and stainless steel welded pipe difference?

The difference comes from the different production process, the raw material of welded pipe is steel plate or steel coil welding, and the raw material of seamless pipe is directly perforated steel ingot.

8. What is ellipticity?

The so-called ovality is the presence of the phenomenon of outer diameter difference in the cross section of the stainless steel tube, that is, there is not necessarily perpendicular to each other the largest outer diameter and small inner diameter, and the largest outer diameter and small diameter difference is the ovality.

9. Advantages of stainless steel tube compared with other materials?

Stainless steel tube compared with other materials, iron, galvanized and other materials, it has corrosion resistance, beautiful material and relatively cheap price