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How to identify the advantages and disadvantages of the seamless steel pipe

2018-06-12 09:41:34   COMMENT:0 HITS:
  Seamless steel pipe can be applied to the field of fluid pipe, boiler plant, engineering, machine processing plant and so on. The high quality seamless steel pipe is not only reflected in the service life, but also strong in the use process. On the contrary, the inferior seamless steel pipe will appear in the use of such problems. The advantages and disadvantages of seamless steel pipe:

  1, the shoddy seamless steel pipe is easy to fold: folding is the broken line formed on the surface of the 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 falls greatly.

  2, the appearance of the shoddy seamless steel pipe often has a phenomenon of hemp: the surface of the hemp is caused by the uneven wear of the steel surface due to the serious wear of the groove. Because the manufacturers of fake and poor seamless steel pipes are seeking profits, the most standard rolling groove rolling is often occurred.

  3. The surface of the shoddy and inferior seamless steel pipe is easily scars.

  4, the surface of the fake and inferior material 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, and after rolling, there are cracks.

  5, the shoddy seamless steel pipe is easy to scrape, the reason is the poor seamless steel pipe manufacturer equipment simple, easy to produce burr, scraping the steel surface, deep scraping to reduce the strength of steel.

  6, the cross section of the inferior seamless steel pipe is oval, the reason is that the manufacturer in order to save the material, the two of the finished roll before the pressure is large, the strength of the screw steel is greatly reduced, and does not conform to the standard of the shape of the thread steel.

  Hebei Shengtian Group Reaguan Pipeline Co., Ltd, pecialize in producing API 5L ASTM A106 seamless steel pipe used for petroleum pipeline.

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