API 5L PSL2 X42 seamless steel pipe
Identification method of fake API 5L PSL2 X42 seamless steel pipe As we all know there are lots of steel suppliers in the world, but not all of them produce the high quality API 5L PSL2 X42 seamless steel pipe . Katalor has the rich experience in API 5L PSL2 X42 seamless steel pipe. And next we will tell you how to find the fake API 5L PSL2 X42 seamless steel pipe. 1. Easy to present the fold. The occurrence of folding is a variety of fold lines formed by the appearance of API 5L PSL2 X42 seamless steel pipe , which usually runs through the longitudinal direction of the pipe. Folding occurs because the counterfeit manufacturers seek high efficiency, the amount of pressing is too large, and the ear is generated. When the next rolling occurs, the folding occurs, and the folded API 5L PSL2 X42 seamless steel pipe is cracked after being bent, and the strength of API 5L PSL2 X42 seamless steel pipe is greatly reduced. 2. The appearance often has the appearance of pockma