How to judge the shoddy oil pipeline?

　Fake and inferior oil pipeline are easy to fold. In recent days, there have been rare good signs in the domestic oil pipe market, spot steel prices rebound significantly, low-priced resources trading volume has also been a major breakthrough. In addition, after a period of accelerated consumption, the stock of seamless steel oil pipeline in major cities has been sharply reduced, resulting in the willingness of some straight-seam steel pipe mills to raise quotations; some analysts and institutions have also predicted that the market for oil pipeline in May may usher in a phased reversal, subject to higher supply pressures, coupled with demand fundamentals, politics. There are no significant benefits in policy and economic aspects, and the reversal of domestic ASTM A106 Seamless Steel Precision Oil Pipeline market prices is not yet necessary. The surface of the false and inferior oil pipeline is easy to generate scars.

　　The appearance of shoddy oil pipeline is often a phenomenon of pitting. Because of the serious wear of the groove, the surface of the steel is irregular and uneven. Because of the profit margins of the manufacturers of shoddy and straight seam steel tubes, the most standard rolling groove is often exceeded.