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ASTM A106, ASTM A53, API 5L, EN 10216-2 Seamless Steel Pipe

10.16.2025

ASTM A106, ASTM A53, API 5L, EN 10216-2 Seamless steel pipe‌ is a type of pipe manufactured by piercing a solid round steel billet, resulting in a surface without any welded seams. Based on production methods, seamless steel pipes can be categorized into:

  • ‌Hot-rolled seamless steel pipe‌
  • ‌Cold-rolled seamless steel pipe‌
  • ‌Cold-drawn seamless steel pipe‌
  • ‌Extruded seamless steel pipe‌
  • ‌Pilger mill pipe

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In terms of cross-sectional shape, seamless pipes are classified into ‌round‌ and ‌profiled‌ types. Profiled pipes come in various complex shapes, including:

  • ‌Square‌
  • ‌Oval‌
  • ‌Triangular‌
  • ‌Hexagonal‌
  • ‌Crescent-shaped)
  • ‌Star-shaped‌
  • ‌Finned tubes

The diameter range varies from ‌4mm (minimum)‌ to ‌900mm (maximum)‌. Depending on application requirements, they are available in ‌thick-walled‌ and ‌thin-walled‌ versions.

‌Primary Applications:‌

  • ‌Petroleum & geological drilling pipes‌
  • ‌Cracking pipes‌ for petrochemical industry
  • ‌Boiler tubes‌
  • ‌Bearing tubes‌
  • ‌High-precision structural steel pipes‌ for automotive, tractor, and aerospace industries

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