The method of identifying the fake and inferior seamless steel pipe?

There is a so-called fluid tube in the market, which is actually a processed high frequency welded pipe. The process is to remove or grind off the original weld with a special equipment, and one is to heat the welded pipe. Some illegal businesses use such pipes to deceive our material personnel, which is really abominable. After years of observation and consultation with people in the industry, I am absolutely correct in identifying this kind of pipe. How can I identify the pros and cons of seamless steel tubes?

1.The false and inferior seamless steel pipe is easy to fold up. Folding is the broken line formed on the surface of seamless steel pipe, which often runs through the longitudinal direction of the whole product. The reason for the folding is due to the high efficiency of the fake and inferior manufacturers, the heavy reduction, the generation of the ears, the folding when the next rolling is rolled, the folded product will crack after the bending, and the strength of the seamless steel pipe will decrease greatly.

 

2.the appearance of shoddy seamless steel pipe often has a phenomenon of hemp. Because of the serious wear of the groove, the surface of the steel is irregular and uneven. Because the manufacturers of fake and inferior seamless steel tubes have to pursue profits, the groove rolling is often the most exceeding standard.

 

3.The surface of the fake and inferior seamless steel tube is easily scars. There are two reasons: (1) fake and inferior seamless steel tubes are of uneven material and many impurities. (2). Counterfeit and inferior materials manufacturers are weak in guiding equipment and easy to stick to steel. These impurities tend to produce scars after biting the roller.

 

4.The surface of the fake and inferior seamless steel pipe is easy to crack. The reason is that the blank is the billet and the air hole is more. The crack is caused by the thermal stress in the process of cooling.

 

5.the shoddy and seamless steel pipe is easy to scratch. The reason is that the equipment of the shoddy seamless steel pipe manufacturers is simple and easy to burr and scratch the surface of the steel products. Deep scraping reduces the strength of the steel.

 

6.the shoddy seamless steel tube has no metallic luster, it is light red or similar to pig iron color.

 

The above 6 points are the methods to identify the shoddy seamless steel pipe. Ray steel tube specializes in the production of precision seamless steel tubes, complete equipment, and factory inspection videos. You can rest assured of the purchase from our factory!