CARBON STEEL FITTINGS GRADES

• ASTM A234 WPB – Most commonly used grade for butt-weld fittings; suitable for moderate to high temperature and pressure applications.
• ASTM A105 – Forged carbon steel used for flanges, socket weld, and threaded fittings in high pressure systems.
• ASTM A106 Gr. B – Seamless carbon steel pipe grade, often used for high-temp service; fittings match for pressure pipelines.
• ASTM A420 WPL6 – Low-temperature carbon steel used in cryogenic and cold service piping systems.
• ASTM A694 F42 / F46 / F52 / F60 / F65 / F70 – High-strength forged fittings and flanges used in high pressure transmission service (mostly oil & gas pipelines).
• IS 1239 / IS 3589 – Indian Standards for mild steel pipe fittings used in low-pressure and water distribution systems.
• ASTM A860 WPHY 42 / 46 / 52 / 60 / 65 / 70 – High-yield strength wrought fittings for use in gas, oil, and high-pressure services.