ALLOY STEEL FITTINGS GRADES

• ASTM A234 WP1 – Low alloy steel for moderate temperature service, commonly used in power plants.
• ASTM A234 WP5 – Chromium-molybdenum alloy steel, ideal for high-temp environments like refineries and boilers.
• ASTM A234 WP9 – High-performance alloy with good strength and oxidation resistance at elevated temperatures.
• ASTM A234 WP11 – Widely used in high-temperature and pressure systems like petrochemical plants.
• ASTM A234 WP22 – Excellent for high-pressure steam and power generation service.
• ASTM A234 WP91 – Advanced creep-resistant alloy for ultra high-temperature and pressure environments.
• ASTM A182 F5 / F9 / F11 / F22 / F91 – Forged alloy grades used in flanges and fittings for high temp, high-stress applications.
• ASTM A335 P1 / P5 / P9 / P11 / P22 / P91 – Seamless alloy steel pipe grades; fittings are often matched accordingly.