Alloy Steel ASTM A335 P11 & P22 IBR Pipes Supplier in Mumbai

Tatvam Overseas Inc is a specialized stockist and distributor of Alloy Steel ASTM A335 Grade P11 and Grade P22 seamless high-pressure boiler pipes based in Mumbai, India. We cater specifically to power generation plants, thermal utilities, steam piping contractors, and petrochemical refineries that demand uncompromised creep-rupture strength at elevated temperatures.

ASTM A335 (ASME SA335) designates seamless ferritic alloy-steel pipe designed for elevated temperature service. Grade P11 contains approximately 1.25% Chromium and 0.5% Molybdenum, while Grade P22 contains 2.25% Chromium and 1.0% Molybdenum. This precise alloying chemistry confers superior resistance to thermal fatigue, hydrogen embrittlement, and high-temperature graphitization compared to conventional carbon steels, allowing continuous safe operation up to 550°C (P11) and 600°C (P22).

All our alloy steel pipes are 100% compliant with Indian Boiler Regulations (IBR 1950) and are accompanied by original IBR Form III-A or Form III-G certificates authorized by the Directorate of Steam Boilers. Our ready inventory includes nominal sizes from 1/2 inch NB to 16 inches NB in Schedule 40, Schedule 80, Schedule 160, and XXS heavy-wall executions, sourced from tier-one international and domestic rolling mills.

At Tatvam Overseas Inc, material integrity is paramount. In addition to mandatory tensile, flattening, and hardness tests, our pipes undergo full-length ultrasonic examination and hydrostatic testing. Our central Mumbai warehouse facilitates rapid cutting to custom lengths, pipe end preparation, and prompt dispatch to industrial project sites throughout India and global export destinations.