Seamless Pipe

Seamless Pipe is a hollow tubular steel material without welded joints, which is processed into solid steel billets through hot rolling, cold drawing, or extrusion processes. The overall structure is continuous and complete, with better pressure and impact resistance than welded pipes.Widely used in industries such as oil and gas transportation, chemical, power, engineering machinery, aerospace, etc., it is used to transport high-pressure fluids (such as crude oil, natural gas, high-temperature steam), manufacture high-pressure vessels and hydraulic system components, and is also suitable for geological exploration, shipbuilding, and other scenarios that require strict strength and sealing of pipes.

Common Types

  • Hot rolled seamless pipe: with a large diameter and uniform wall thickness, suitable for medium and low pressure fluid transportation and mechanical structural components
  • Cold drawn seamless tube: high dimensional accuracy, good surface smoothness, suitable for hydraulic systems and precision instrument pipelines
  • Alloy seamless tube: Adding alloy elements such as chromium and molybdenum, it is resistant to high temperatures and corrosion, and is used for power plant boilers and chemical reaction pipelines
  • Stainless steel seamless pipe: made of materials such as 304/316L, resistant to acid and alkali corrosion, suitable for the fields of food, pharmaceuticals, and seawater desalination

Structural Advantages & Corresponding Benefits

  1. Homogenized forged pipe wall structure

  • Special point: It adopts integral steel billet hot extrusion forming, with uniform and dense metallographic structure on the pipe wall, and no welding stress or weld defects.
  • Result:The compressive strength has increased by more than 30%, and it can withstand high-pressure impacts and frequent pressure fluctuations, eliminating the risk of pipeline rupture.

  1. Precision cold drawing dimension calibration structure

  • Special point: The finished product undergoes multiple cold drawing and sizing processes, with an inner diameter tolerance controlled within ± 0.05mm and no oxide layer on the inner wall.
  • Result: With low fluid resistance, it is suitable for high-precision flow control scenarios and can be directly used in hydraulic cylinders and instrument sensing pipelines without the need for secondary processing.
All Products（0）
Data is empty