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Stainless Steel Butt Weld Fittings

ASTM A403 WP304/304L, WP316/316L, WP321, WP347 • ASME B16.9 • Seamless & Welded • Mumbai, India

Stainless Steel Butt Weld Fittings Manufacturer in India

Stainless Steel Butt Weld Fittings Manufacturer in India

Ganpat Metal manufactures and supplies certified Stainless Steel Butt Weld Fittings in Grade ASTM A403 WP304, WP304L, WP316, WP316L, WP321, and WP347 conforming to ASME / ANSI B16.9, ASME B16.28, and MSS-SP-43. Our precision fittings are engineered for leak-free, high-integrity piping systems in oil & gas, chemical, petrochemical, food & dairy, pharmaceutical, and offshore marine industries.

Our stainless steel fittings inventory includes 90° and 45° elbows (long and short radius), equal and reducing tees, concentric and eccentric reducers, end caps, and stub ends. Available in seamless construction for ultra-high-pressure applications and 100% X-ray radiography tested welded execution for large-diameter lines, all fittings undergo rigorous solution annealing to restore corrosion resistance and ensure ductile mechanical properties.

We supply sizes from 1/2" NB to 48" NB across schedules 5S, 10S, 40S, 80S, 160, and XXS. All fittings are beveled to ASME B16.25 and supplied with EN 10204 Type 3.1 Mill Test Certificates from our central Mumbai distribution warehouse.

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GM Stainless Steel Butt Weld Fittings

GM handles enquiries for Stainless Steel Butt Weld Fittings where buyers need to match fitting types (elbows, tees, reducers, end caps), nominal pipe sizes (NPS / DN), wall thickness schedules, and material grade to piping isometric drawings or project purchase specifications. The supplied inventory covers seamless and 100% X-ray welded fittings from 1/2" NB up to 48" NB across all schedules from Sch 10S to Sch XXS.

Grade selection should be based on the design pressure, service temperature, fluid media corrosivity, and mechanical strength requirements of the piping system. Buyers should also confirm the applicable manufacturing standard (ASME B16.9 / MSS-SP-43), weld bevel preparation (ASME B16.25), supplementary inspection requirements (radiography, PMI, hydrotest), and test documentation before finalizing an order.

Stainless Steel Butt Weld Fittings Specifications

Stainless Steel Butt Weld Fittings Technical Data & Specifications Matrix

Stainless Steel Butt Weld Fittings Specifications

Parameter Specification
Standard Specifications ASTM A403 / ASME SA403, ASME B16.9, ASME B16.28, MSS-SP-43
Available Grades WP304, WP304L, WP316, WP316L, WP321, WP347, WP310S
Fitting Types 90°/45° Elbows, Equal/Reducing Tees, Concentric/Eccentric Reducers, End Caps, Stub Ends
Size Range 1/2" NB to 48" NB (DN15 to DN1200)
Schedule / Thickness Sch 5S, 10S, 20, 40, STD, 80, XS, 160, XXS
Manufacturing Process Seamless (Hot / Cold Formed) & Welded (100% X-Ray Inspected)
End Preparation Beveled Ends (ASME B16.25) 37.5° ± 2.5°, Plain Ends
Heat Treatment Solution Annealed at 1050°C - 1100°C followed by rapid water quenching
Testing & Certification PMI, Radiography (RT), Hydrostatic, IGC Test (ASTM A262 Practice E)
Documentation EN 10204 Type 3.1 / 3.2 Mill Test Certificate, NACE MR0175 / ISO 15156

Stainless Steel Butt Weld Fittings Chemical Composition

Standard chemical composition limits conform to international metallurgical standards.

Grade C max Cr Ni Mo Mn max Other
WP304 0.08 18.0 – 20.0 8.0 – 10.5 — 2.0 Si 0.75 max
WP304L 0.030 18.0 – 20.0 8.0 – 12.0 — 2.0 Si 0.75 max
WP316 0.08 16.0 – 18.0 10.0 – 14.0 2.0 – 3.0 2.0 Si 0.75 max
WP316L 0.030 16.0 – 18.0 10.0 – 14.0 2.0 – 3.0 2.0 Si 0.75 max
WP321 0.08 17.0 – 19.0 9.0 – 12.0 — 2.0 Ti ≥ 5x(C+N)
WP347 0.08 17.0 – 19.0 9.0 – 13.0 — 2.0 Nb ≥ 10xC

Stainless Steel Butt Weld Fittings Mechanical Properties

Minimum mechanical property requirements in designated standard delivery condition:

Grade Tensile Strength (min) Yield Strength 0.2% (min) Elongation (min) Hardness (max)
WP304 515 MPa (75 ksi) 205 MPa (30 ksi) 28% 192 HB / 90 HRB
WP304L 485 MPa (70 ksi) 170 MPa (25 ksi) 28% 192 HB / 90 HRB
WP316 515 MPa (75 ksi) 205 MPa (30 ksi) 28% 192 HB / 90 HRB
WP316L 485 MPa (70 ksi) 170 MPa (25 ksi) 28% 192 HB / 90 HRB
WP321 515 MPa (75 ksi) 205 MPa (30 ksi) 28% 192 HB / 90 HRB
WP347 515 MPa (75 ksi) 205 MPa (30 ksi) 28% 192 HB / 90 HRB

Stainless Steel Butt Weld Fittings Equivalent Grades

Standard / Country Designation
ASTM A403 WP304 UNS S30400 • W.Nr. 1.4301 • EN X5CrNi18-10 • SUS 304
ASTM A403 WP304L UNS S30403 • W.Nr. 1.4306/1.4307 • EN X2CrNi18-9 • SUS 304L
ASTM A403 WP316 UNS S31600 • W.Nr. 1.4401 • EN X5CrNiMo17-12-2 • SUS 316
ASTM A403 WP316L UNS S31603 • W.Nr. 1.4404 • EN X2CrNiMo17-12-2 • SUS 316L
ASTM A403 WP321 UNS S32100 • W.Nr. 1.4541 • EN X6CrNiTi18-10 • SUS 321
ASTM A403 WP347 UNS S34700 • W.Nr. 1.4550 • EN X6CrNiNb18-10 • SUS 347

Stainless Steel Butt Weld Fittings Sizes and Dimensions

Form / Type Size Range Length / Dimensions Condition / Standard
90° Long Radius (LR) Elbow 1/2" to 48" NB (DN15 - DN1200) Sch 5S to Sch XXS ASME B16.9 / R = 1.5D
45° Long Radius (LR) Elbow 1/2" to 48" NB (DN15 - DN1200) Sch 5S to Sch XXS ASME B16.9 / Standard Radius
90° Short Radius (SR) Elbow 1/2" to 36" NB (DN15 - DN900) Sch 10S to Sch XXS ASME B16.9 / R = 1.0D
Equal / Straight Tee 1/2" to 48" NB (DN15 - DN1200) Sch 5S to Sch XXS ASME B16.9 / Center-to-End C = M
Reducing Tee 1/2" x 3/8" to 48" x 40" NB Sch 5S to Sch XXS ASME B16.9 / Branch Dimension M
Concentric Reducer 1/2" x 3/8" to 48" x 40" NB Sch 5S to Sch XXS ASME B16.9 / In-line Center Flow Axis
Eccentric Reducer 1/2" x 3/8" to 48" x 40" NB Sch 5S to Sch XXS ASME B16.9 / Flat Side for Horizontal Lines
End Cap 1/2" to 48" NB (DN15 - DN1200) Sch 5S to Sch XXS ASME B16.9 / Ellipsoidal Head Profile
Stub End (Lap Joint) 1/2" to 24" NB (DN15 - DN600) Sch 5S to Sch 80 MSS-SP-43 / ASME B16.9 Short/Long Pattern

Custom dimensions, special cuts, and tailored surface conditions available on request.

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Stainless Steel Butt Weld Fittings Weight Estimator

Estimate butt weld fitting weights by fitting type, nominal pipe size (NPS) and schedule.

Stainless Steel Butt Weld Fittings Inspection and Testing

  • Dimensional inspection according to ASME B16.9 (OD, ID, wall thickness, center-to-end, out-of-roundness)
  • Bevel end angle and root face verification conforming to ASME B16.25 (37.5° ± 2.5°)
  • Chemical composition analysis by Optical Emission Spectrometry (PMI / OES lab test)
  • Tensile strength, yield strength (0.2% offset) and elongation testing at ambient temperature
  • Hardness testing (Brinell HBW / Rockwell HRC) conforming to NACE MR0175 / ISO 15156
  • 100% Visual and surface inspection for internal & external laminations, laps, or cracks
  • 100% Radiographic Testing (RT) / X-Ray on weld seams of welded fittings (ASME Section VIII Div 1)
  • Ultrasonic Testing (UT) / Eddy Current examination for seamless fittings
  • Dye Penetrant (DP) / Liquid Penetrant Examination (PT) of bevel ends and welded joints
  • Hydrostatic proof testing validation matching associated pipe pressure rating
  • Intergranular corrosion test (ASTM A262 Practice E/A) or pitting corrosion test (ASTM G48 Method A)
  • Complete Mill Test Certificate EN 10204 Type 3.1 / 3.2 documentation with full traceability

Stainless Steel Butt Weld Fittings Applications

  • Oil & gas offshore platforms, subsea manifolds, riser pipelines, and wellhead piping
  • Petroleum refineries, atmospheric distillation units, hydrocrackers, and catalytic reformers
  • Chemical processing plants, organic and inorganic acid synthesis, and reaction vessels
  • Thermal, combined-cycle and nuclear power stations, boiler steam headers, and feedwater loops
  • LNG receiving terminals, cryogenic transfer pipelines, and liquefied gas storage tanks
  • Marine shipbuilding, naval defense vessels, seawater cooling circuits, and bilge lines
  • Fertilizer manufacturing complexes, ammonia synthesis loops, and urea stripper piping
  • Desalination plants, reverse osmosis high-pressure headers, and brine discharge lines
  • Pharmaceutical sterile processing, high-purity water systems (WFI), and clean steam lines
  • Food, brewery, and dairy processing sanitary pipelines
  • Pulp and paper processing digesters, chlorine bleach towers, and black liquor recovery systems
  • Mining slurry transportation pipelines, autoclave leaching, and hydrometallurgical piping

Stainless Steel Butt Weld Fittings Manufacturer and Supplier in India

Ganpat Metal manufactures and supplies certified Stainless Steel Butt Weld Fittings for industrial buyers across India. All materials are sourced from premium quality mills, fully tested for chemistry, mechanical properties, and dimensional tolerances, and supplied with complete traceable Mill Test Certificates.

Whether you require standard stock dimensions or customized sizes, Ganpat Metal maintains deep inventories in Mumbai and provides rapid dispatch, custom cut-to-length services, and third-party inspection support.

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Stainless Steel Butt Weld Fittings Exporter from India

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Why Choose Ganpat Metal for Stainless Steel Butt Weld Fittings?

  • Comprehensive inventory covering 1/2" NB to 48" NB in seamless and 100% X-ray welded execution
  • Manufactured strictly conforming to ASME B16.9, MSS-SP-43, and international dimensional tolerances
  • Precision weld beveling to ASME B16.25 for effortless root-pass alignment and rapid site welding
  • Complete grade availability: Austenitic SS, Duplex, Super Duplex, Alloy Steel, Carbon Steel, and Nickel Alloys
  • Fully equipped in-house heat treatment furnaces (solution annealing, normalizing, stress relieving)
  • 100% Positive Material Identification (PMI) prior to packing with portable XRF spectrometers
  • NACE MR0175 / ISO 15156 compliance certification for harsh sour gas and H2S service
  • Stringent Non-Destructive Testing (RT, UT, PT, MT) conducted by Level II certified technicians
  • ISO 9001:2015 certified manufacturer with 35+ years of trusted engineering supplies across India & globally
  • Welcoming third-party inspection agencies (TUV, DNV, Bureau Veritas, SGS, Lloyds, Velosi)
  • Heavy-duty export-worthy wooden case packaging with beveled end plastic cap protection

Specify Your Stainless Steel Butt Weld Fittings Requirement

Requirement Details to Provide
Fitting Type 90°/45° LR Elbow, Equal Tee, Reducing Tee, Reducer, Cap, Stub End
Grade ASTM A403 WP304, WP304L, WP316, WP316L, WP321, WP347
Size (NPS / DN) 1/2" NB to 48" NB
Schedule / Wall Sch 10S, Sch 40S, Sch 80S, Sch 160, Sch XXS
Construction Seamless or 100% X-Ray Welded (ASME B16.9)
End Preparation Beveled Ends (ASME B16.25) or Plain Square Cut
Quantity Required number of pieces or BOM list
Documentation EN 10204 Type 3.1 / 3.2 MTC with PMI & IGC reports
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