ASTM B16.5 WPB Butt Weld Stainless Steel Reducer: Rainbowmold is a specialist manufacturer of custom forged flanges and pipe fittings for global OEM/ODM buyers. Our capability covers weld-neck, slip-on, blind and threaded flanges, plus elbows and tees, produced in carbon steel, stainless steel 304/316, brass and alloy steel to tight tolerances. Backed by 20+ years of experience, ISO 9001 and ISO 14001 quality systems, and compliance with ANSI, ASME, DIN, BS, GB, ISO and JIS, we deliver from rapid prototype and tooling through mass production with DFM support and door-to-door logistics. Send us your drawing or sample for engineering feedback and a fast, competitive quote.

Toilet Bowl Flange Wide Flange Spectra Flange 21mm

Forged steel and stainless flanges


ASTM B16.5 WPB Butt Weld Stainless Steel Reducer: Rainbowmold forges and machines the ASTM B16.5 WPB Butt Weld Stainless Steel Reducer through our 28-year dedicated flange and pipe-fitting line. built to ANSI/ASME, EN/DIN, BS, JIS and GB specifications, Class 150-2500 / PN6-PN420. we forge carbon, alloy and stainless grades (A105, 304/304L, 316/316L, duplex, F51/F91) to the required schedule. The range covers blind, weld-neck, slip-on, threaded, socket-weld, elbow, tee, reducer and custom-forged fittings. we supply EN 10204 3.1 mill certs, PMI, and UT / MT / PT inspection for code-compliant traceability. Products ship to power plant, chemical plant, pipeline and pressure-vessel applications under an ISO 9001 / ISO 14001 system, with PED/CE marking available for European projects. Send your tag number, drawing or size-Pressure Class for a competitive forged-flange quotation.