High-Temperature Chromium-Molybdenum Alloy Steel Pipe Fittings for Power & Petrochemical
MicroTech Stainless Steel Co. supplies premium quality Alloy Steel Pipe Fittings manufactured from chromium-molybdenum alloy grades including P5, P9, P11, P22, P91, and P92. These high-temperature alloy steel fittings are specifically designed for elevated temperature service in power plants, petrochemical refineries, and high-pressure steam systems.
Our alloy steel fittings provide superior creep strength, oxidation resistance, and mechanical properties at temperatures ranging from 400°C to 650°C. Available in butt weld configuration including elbows, tees, reducers, caps, and stub ends manufactured to ASME B16.9, ASTM A234, and MSS SP-75 standards in sizes from 1/2" to 48".
Each fitting undergoes rigorous heat treatment (normalizing, tempering, or quenching & tempering depending on grade) and comprehensive testing including chemical analysis, mechanical property verification, hardness testing, and dimensional inspection to ensure compliance with ASME Section I, Section VIII, and B31.1/B31.3 piping codes.
Excellent creep strength and stress rupture properties at elevated temperatures. P91/P92 grades maintain strength up to 650°C for long-term service in supercritical boilers.
Superior resistance to high-temperature oxidation and scaling. Chromium content provides protective oxide layer in steam and combustion gas environments.
High allowable stress values enable operation at elevated pressures. Suitable for supercritical and ultra-supercritical steam conditions.
Excellent resistance to creep deformation under sustained high-temperature loading. P91/P92 offer superior creep-rupture strength compared to lower alloy grades.
Good resistance to hydrogen attack in high-temperature, high-pressure hydrogen environments found in refinery hydrotreating units.
Manufactured and tested to ASME B31.1, B31.3, Section I, and Section VIII requirements. Full material traceability and test certificates provided.
Supercritical and ultra-supercritical boiler piping, main steam lines, hot reheat piping, and high-temperature headers in coal, gas, and nuclear power plants.
Hydrocracking units, catalytic reformers, delayed coking units, visbreakers, and high-temperature process piping handling hydrocarbon streams.
Ethylene cracking furnaces, steam reforming units, synthesis gas production, and high-temperature chemical process piping.
Waste heat recovery boilers, HRSG units in combined cycle plants, and high-temperature heat exchanger piping.
High-temperature reactors, ammonia synthesis, methanol production, and hydrogen processing units requiring elevated temperature service.
High-pressure steam piping, superheated steam systems, and district heating networks operating at elevated temperatures and pressures.