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Stainless Steel Buttweld Fittings

Stainless Steel Buttweld Fittings Manufacturer & Global Supplier

ASTM A403 Wrought Austenitic Stainless Steel Buttweld Pipe Fittings | Seamless, Welded & Fabricated

Core Flow Flange is a premier manufacturer, stockist, and exporter of high-integrity stainless steel buttweld fittings. Engineered for demanding industrial flow systems, our fittings provide exceptional mechanical strength, resistance to pitting and chloride stress-corrosion cracking, and thermal stability in elevated-temperature and corrosive operating environments.

We supply a comprehensive range of stainless steel elbows, tees, reducers, caps, stub ends, and pipe bends compliant with ASME B16.9, ASME B16.28, and MSS-SP-43 dimensional specifications, backed by complete material traceability and EN 10204 3.1 certification.

Technical Specifications

Parameter
Standard Range & Capability
Standard Specifications
ASTM A403 / ASME SA403
Dimensional Standards
ASME/ANSI B16.9, ASME B16.28, MSS-SP-43
Size Range
1/8″ NB to 48″ NB (Seamless up to 24″, 100% Radiographed Welded/Fabricated up to 48″)
Schedule / Wall Thickness
SCH 5S, 10S, 40S, 80S, STD, XS, SCH 100, 120, 140, 160, XXS (available in NACE MR0175 / ISO 15156)
Manufacturing Types
Seamless, Welded, Fabricated
Surface Finish & Processing
Pickled & Passivated, Sand Blasted, Electropolished

Material Grades Offered

We supply wrought austenitic, ferritic, and specialized austenitic stainless steel fittings engineered for varied service environments:

  • Standard Austenitic: ASTM A403 WP304, WP304L, WP304H, WP316, WP316L, WP316LN
  • Stabilized & High-Temperature: ASTM A403 WP321, WP321H, WP347, WP347H, WP310S
  • High-Molybdenum & Specialty Grades: ASTM A403 WP317L, WP316Ti, 904L (UNS N08904), Alloy 20
  • Martensitic & Ferritic Grades: Grade 410, Grade 446

Product Portfolio

  • Elbows: 45°, 90°, and 180° Long Radius (LR) & Short Radius (SR) Elbows, 3D & 5D Induction Bends
  • Tees & Crosses: Equal Tees, Reducing Tees, Barred Tees, Equal Crosses, Reducing Crosses, Lateral Tees
  • Reducers: Concentric Reducers, Eccentric Reducers
  • Branch & End Closures: Long Pattern Stub Ends, Short Pattern Stub Ends (Type A, B, C), Pipe End Caps

Industrial Applications

  • Offshore Oil & Gas Exploration and Marine Engineering
  • Petroleum Refineries and Petrochemical Processing
  • Chemical Synthesis and Fertilizer Production
  • Thermal, Geothermal, and Nuclear Power Plants
  • Industrial Heat Exchangers, Condensers, and Boilers
  • Pharmaceutical, Biotechnology, and Clean Process Piping
  • Pulp, Paper, and Water Desalination Systems

Commercial Supply & Global Export Network

Core Flow Flange delivers scheduled consignments to EPC contractors, stockists, and fabricators across key global energy and industrial hubs:

  • Middle East & GCC: UAE (Dubai, Abu Dhabi, Sharjah), Saudi Arabia (Riyadh, Dammam, Al Jubail, Al Khobar), Qatar (Doha), Kuwait, Oman (Muscat), Bahrain.
  • North America & Europe: United States (Houston, Dallas, New York), Canada (Calgary, Edmonton, Toronto), United Kingdom (London, Aberdeen), Germany, Italy (Milan), Spain (Madrid), Netherlands.
  • Asia-Pacific & Africa: Singapore, South Korea (Seoul, Busan, Ulsan), Malaysia, Indonesia, Australia (Perth, Brisbane, Melbourne), South Africa, Egypt, Nigeria.
  • Domestic Indian Industrial Centers: Mumbai, Ahmedabad, Surat, Vadodara, Rajkot, Pune, Chennai, Bengaluru, Hyderabad, Delhi NCR, Kolkata.