Stainless Steel Forged Flange

Premium ASME SA815 / ASTM A815 F304/304L flat face blind flanges manufactured from austenitic and duplex steel. Features 21.3-2032mm outer diameter range, 150-2500lbs pressure rating, and multiple sealing surface options. Ideal for high-pressure pipe connections with rigorous quality testing and international standards compliance.

ASTM A182 F304L Weld Neck Flange Class 300 designed for power plant applications with excellent stress distribution and sealing performance. Features ISO and PED certifications, available in outer diameters from 21.3mm to 2032mm. SMLSCO maintains 500+ tons of inventory for quick delivery of standard and custom sizes.

F321 stainless steel slip-on flange designed for pressure vessel applications requiring high-temperature resistance up to 850°C. Features forged construction, ASME B16.5 compliance, and ISO/PED certifications. Available in full size range with rapid delivery from 500+ ton blank inventory. Ideal for process connections, manholes, and observation ports in demanding industrial environments.

High-performance ASME B16.5 F2205 duplex stainless steel forged flange rated Class 600 for offshore applications. Features 450 MPa yield strength, superior corrosion resistance in seawater environments, and comprehensive quality assurance including PMI verification and penetrant testing. Ideal for high-pressure oil and gas systems on offshore platforms.

High-quality ASTM A182 F316 stainless steel blind flange with Class 600 pressure rating and DN150 RF facing. Features 100% PMI material verification, penetrant testing, and ASME B16.5 compliance. Ideal for pipeline end closure in petroleum, chemical, and power generation applications. Available in sizes up to 80 inches with ISO and PED certifications.

High-temperature F310S stainless steel socket weld flange designed for furnace piping and thermal processing equipment. Features Class 150 pressure rating, Raised Face sealing, and sizes up to 80 inches. Manufactured to ASME B16.5 standards with exceptional oxidation resistance up to 1093°C. ISO, PED, and NORSOK M650 certified production ensures industrial-grade reliability.

Corrosion-resistant ASTM A182 F316L stainless steel loose flange with PN16 pressure rating and DN150 diameter. Features excellent mechanical properties including ≥485MPa tensile strength and ≥170MPa yield strength. Certified to PED, ISO, and NORSOK M-650 standards with comprehensive quality assurance and rapid order fulfillment from 500-ton blank inventory.

Industrial-grade ASTM A182 F316L stainless steel forged loose flange with DN150 size and PN16 pressure rating. Features excellent corrosion resistance, ≥485MPa tensile strength, and comprehensive certifications including PED and ISO. Available with customizable face types and rapid delivery from 500-ton inventory stock.

High-performance 2205 duplex steel weld neck flange with DN150 size and Class 150 pressure rating. Features superior corrosion resistance, ASME B16.5 compliance, and multiple surface options (RF, FF, RTJ). Ideal for demanding piping applications with pressure ratings from 150 to 2500lbs. Backed by 17 years of manufacturing expertise and comprehensive quality packaging.

High-performance F310S stainless steel socket weld flange designed for small-diameter, high-pressure piping systems. Features Class 150 pressure rating, 1093°C oxidation resistance, and ASME B16.5 compliance. Ideal for furnace piping and thermal processing equipment with superior high-temperature strength and creep resistance.