What is the cause of transverse crack on the surface of seamless steel pipe

Views : 469
Update time : 2023-01-13 09:19:26
  Under the corresponding mechanical conditions, various factors that reduce the plasticity of ASTM A335 P5 Seamless Steel Pipe during processing will increase the chances of internal transverse cracks. Therefore, annealing quality and elimination of hydrogen embrittlement are very important in the production of thick-walled seamless steel pipe.

  In addition to the additional stress in the axial direction, there are additional stress in the tangential direction in the process of empty drawing. Longitudinal crack is caused by additional tangential tension stress produced during pull-out.

  Hebei shengtian pipe-fitting group Co., ltd is usually used if there is no special requirement. Seamless steel pipe is made of No. 20 steel, which is not hardened and has no tempering brittleness. The cold deformation has high plasticity and is generally used for bending, calendering, bending and hammer arch processing. The welding performance of arc welding and contact welding is very good, and the thickness of gas welding is relatively small. Generally, it is used for manufacturing under conditions of low pressure resistance but high toughness requirement.

  Seamless steel pipe is made of ingot or solid billet through perforation, and then hot-rolled, cold-rolled or cold-drawn. Seamless steel pipe plays an important role in China's steel pipe industry. It is also one of the advantages of the seamless steel pipe that its manufacturing process is rigorous and it is not allowed to make a millimeter difference outside the specified scope.

Related News
Read More >>
What are the testing items for ASTM A333 Seamless Alloy Steel pipe? What are the testing items for ASTM A333 Seamless Alloy Steel pipe?
Feb .23.2024
Steel pipe manufacturers introduce to you what are the testing items for ASTM A333 Seamless Alloy Steel pipe.First of all, seamless steel pipes are made of a whole round steel perforated. Steel pipes with no welds on the surface are called seamless steel pipes.
Boiler seamless steel pipe specifications and appearance quality Boiler seamless steel pipe specifications and appearance quality
Feb .22.2024
Boiler seamless steel pipe is a type of seamless steel pipe. The manufacturing method is the same as that of seamless steel pipes, but there are strict requirements for the type of steel used in manufacturing steel pipes.
Introduction to BS 3059 Carbon Steel Seamless Steel Pipe Introduction to BS 3059 Carbon Steel Seamless Steel Pipe
Feb .21.2024
BS 3059 Carbon steel seamless steel pipe is a type of long strip steel. Steel pipes have a hollow cross-section and are widely used as pipelines for transporting fluids, such as oil, natural gas, gas, water, and certain solid materials.
Causes of Uneven Wall Thickness of ASTM A53 Spiral Submerged Arc Welded Pipe Causes of Uneven Wall Thickness of ASTM A53 Spiral Submerged Arc Welded Pipe
Feb .20.2024
The uneven wall thickness of the ASTM A53 SSAW Steel Pipe is mainly reflected in the appearance of spiral uneven wall thickness, linear uneven wall thickness, and thicker and thinner wall thickness at the head and tail.