Buy 17-4 PH & 15-5 PH SS Pipe Fittings – Buttweld Elbows, Forged Couplings, Flanges & Olets – For High-Performance Environments – Supplied to NACE, PED, IBR Standards. We are an ISO 9001:2015 certified manufacturer and exporter of premium quality 17-4 PH (UNS S17400) and 15-5 PH (UNS S15500) stainless steel products. Our product line includes buttweld fittings, forged fittings, flanges, and branch outlet fittings (olets), manufactured to meet demanding mechanical requirements in aerospace, petrochemical, marine, and high-pressure systems. All components are produced in accordance with international specifications including ASTM A403 and ASTM A182, and dimensional standards like ASME B16.5, B16.9, B16.11, and MSS SP-97. 17-4 PH and 15-5 PH are precipitation-hardening stainless steels that offer a combination of high strength, hardness, and excellent corrosion resistance. These materials are ideal for applications requiring superior mechanical performance and dimensional stability. 17-4 PH provides tensile strength up to 1100 MPa and excellent resistance to stress corrosion cracking, while 15-5 PH offers improved toughness and uniformity due to its refined microstructure. We supply buttweld fittings (elbows, tees, reducers), flanges (WNRF, SORF, Blind, Threaded), and forged fittings (socket weld/threaded) in Class 3000–9000, as well as olets such as Weldolet, Sockolet, and Threadolet. Both 17-4 PH and 15-5 PH stainless steels are used in critical applications across aerospace, nuclear energy, petrochemicals, marine engineering, oil & gas, food processing, and defense sectors. Their high strength-to-weight ratio, heat treatment flexibility, and corrosion resistance make them suitable for valve parts, shafts, pressure vessels, fasteners, fittings, and structural components. These alloys perform well in both low- and high-temperature environments and are suitable for both static and dynamic load-bearing applications. All products undergo stringent quality control processes including ultrasonic testing, PMI, hardness, tensile, and microstructural analysis. We provide full certification under EN 10204 3.1 / 3.2, along with NACE MR0175…