Steel Flanges

Pioneers in the industry, we offer weld neck carbon steel flanges, ibr alloy steel elbow, ss 316l slip on flanges, stainless steel flange 304, stainless steel round bar and ss 304l long weld neck flanges from India.

WELD NECK CARBON STEEL Flanges

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₹ 750 / Piece Get Latest Price

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Flange TypeSlip On
MaterialCarbon Steel
StandardASME
Pressure Class150
Nominal Bore25 mm
CoatingEpoxy Coated
ApplicationPower Plant, Water Line, Chemical, Oil Gas, Fire Fighting

Minimum order quantity: 5 Piece

Weld neck carbon steel flanges feature a tapered hub and long neck welded directly to pipes for superior strength and reduced stress concentration in high-pressure systems. Common grades like ASTM A105 provide excellent weldability and toughness for temperatures up to 425°C.​

Dimensions

Per ASME B16.5 standards, sizes range from 1/2" to 24" NPS across classes 150-2500. For Class 300 1/2" size: OD 95 mm, thickness 12.7 mm, hub OD 38 mm, bore matches pipe schedule, bolt circle 66.7 mm with 4 x 1/2" bolts.​

Ibr Alloy Steel Elbow

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₹ 650 / Piece Get Latest Price

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Fitting TypeElbow
Material GradeASTM A234 WP11
Size2.5 inch
Nominal Size50 mm (2 in)
End ConnectionButt Weld
Bend Angle90°
Radius TypeLong Radius
StandardASME B16.9

Minimum order quantity: 5 Piece

IBR alloy steel elbows meet stringent Indian Boiler Regulations (IBR) for high-pressure steam and boiler applications. Manufacturers like Ace Alloys LLP produce these fittings in grades such as ASTM A234 WP5, WP9, WP11, and WP91 for superior strength in elevated temperatures. ​

Material Grades

Common IBR-approved alloy steels include WP1, WP5, WP9, WP11, WP12, WP22, and WP91, offering creep resistance up to 600°C. These elbows feature precise chemistry with chromium, molybdenum, and vanadium for oxidation and corrosion resistance. Ace Alloys LLP certifies them with IBR Form III C and NDT reports.​

Specifications

Available in seamless (up to 24" NB) or welded construction (up to 48" NB), sizes range from 1/2" to 48" NB in SCH 10 to XXS. Angles include 30°, 45°, 60°, 90°, with long radius (1.5D) or short radius (1D) bends per ASME B16.9. Pressure ratings suit 150-2500 LBS classes.


SS 316L Slip On Flanges

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₹ 150 / Piece Get Latest Price

Size3/4 in
Material GradeSS316
Pressure Rating150
Face TypeRaised Face
StandardANSI B16.5
ScheduleSch 40
FinishMill Finish

Stainless Steel 316L Grade Slip On Flanges are forged components produced from ASTM A182 Grade F316L material, known for low carbon content that enhances weldability and corrosion resistance in chloride environments. These flanges feature an internal bore matching the pipe ID, allowing the pipe to slip through for double-sided fillet welding, which provides a secure, economical connection in moderate-pressure systems.​

Key Specifications

They adhere to ANSI/ASME B16.5 standards, spanning sizes 1/2" to 48" NPS and classes 150# to 2500#, with dimensions like a Class 300 1" flange at 4.88mm OD, 3.50mm bolt circle, and 1.06mm thickness.​

Stainless Steel Flange 304

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₹ 150 / Piece Get Latest Price

Flange TypeSlip On
Size1/2 in
Pressure Rating150
Face TypeRaised Face
ScheduleSch 40
Material GradeSS304
FinishMill Finish

Stainless Steel 304 flanges are versatile forged fittings made from ASTM A182 Grade F304 austenitic material, offering excellent corrosion resistance in mild environments and weldability for various piping connections. These flanges come in types like weld neck, slip-on, blind, and socket weld, suitable for pressures up to 2500# and sizes from 1/2" to 48" NPS per ANSI B16.5 standards.​

Key Specifications

They feature standard dimensions such as a 1" Class 150 flange with 108mm OD, 60.3mm bolt circle (4 x 1/2" bolts), and 11.2mm thickness, scaling up—for example, an 8" Class 150 at 343mm OD with 8 x 3/4" bolts on 298.5mm circle.​

Stainless Steel Round Bar

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₹ 580 / Kg Get Latest Price

Diameter6 mm
Steel Grade304
Length6 m
FinishPolished
FormHot Rolled
StandardASTM A276
OriginIndian
ApplicationShaft

Stainless steel round bars are solid cylindrical rods commonly available in grades like 304, 304L, 316, and 316L, valued for corrosion resistance and strength in shafts, fasteners, and machine parts. They follow ASTM A276/A479 standards with diameters from 3mm to 300mm and lengths up to 12m, complementing prior angles, flats, sheets, circles, pipes, fittings, and flanges in industrial applications.​

Common Grades
  • 304/304L: General-purpose with 18% Cr, 8% Ni; excellent weldability up to 1500°F.​

  • 316/316L: Molybdenum-enhanced for pitting resistance in marine/chemical use.​

Specifications

Hot-rolled, cold-drawn, or polished finishes; tensile strength 515-620 MPa typical.

SS 304L Long Weld Neck Flanges

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₹ 150 / Piece Get Latest Price

Size2 in
Pressure Class150
MaterialSS 304
StandardASME B16.5
Neck Length100 mm
FacingRaised Face
Flange TypeLong Weld Neck
Surface FinishMachined
 

SS 304L long weld neck flanges are forged stainless steel components with extended tapered hubs for high-stress, high-pressure connections in chemical, oil and gas, and power piping systems.  ​

Material Composition

ASTM A182 F304L grade limits carbon to ≤0.035%, with ≤2.0% manganese, ≤0.75% silicon, 18.0-20.0% chromium, 8.0-13.0% nickel, P≤0.045%, and S≤0.030% to prevent sensitization during welding.  ​

Mechanical Properties

These flanges provide minimum 515 MPa tensile strength, 205 MPa yield strength, and 35% elongation, supporting service from cryogenic temperatures to 800°C under cyclic loading.  ​

Dimensions and Standards

Per ASME B16.5 with extended necks (9-24" lengths), sizes range 1/2"-48" NB in Class 150-2500# (e.g., Class 300 2" OD 165mm, hub OD 84mm, length 68mm); hub thickness increases with pressure class.  ​

Stainless Steel Slip On Flange

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₹ 150 / Piece Get Latest Price

Size2 in
Material GradeSS304
Pressure Rating150
Face TypeRaised Face
StandardANSI B16.5
ScheduleSch 40
FinishMill Finish

Stainless Steel Slip On Flanges are low-cost, forged pipe fittings per ASME B16.5 standards, where the pipe slips into the flange bore for fillet welding on both sides, ideal for low-pressure non-critical applications up to 24" NPS and Class 2500. Common grades include 304, 316L, and higher alloys, with pressure ratings like Class 150 handling 285 psi at 100°F dropping to 20 psi at 1000°F.​

Design Features

The internal diameter matches the pipe ID, with a hub for reinforcement and raised face (RF) or flat face (FF) sealing surfaces; lighter and easier to align than weld necks but less robust for high stress.​

Stainless Steel Plate

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₹ 430 / Kg Get Latest Price

Grade304L
Thickness3 mm
Width1000 mm
Length2440 mm
Surface Finish2B
StandardASTM A240
CertificationMill Test Cert
HardnessSoft Annealed

Stainless steel sheets, typically in grade 304, are flat, thin rolled plates prized for corrosion resistance and versatility in fabrication, cladding, and equipment linings. They feature finishes like 2B (mill), No. 4 (brushed), or mirror for aesthetic and functional uses, complementing prior round bars, angles, flats, channels, tubes, pipes, flanges, and fittings in industrial and structural applications.​

Specifications

Made per ASTM A240/A666 standards; SS 304 offers 18-20% Cr, 8-11% Ni, tensile strength 515-620 MPa, suitable up to 1500°F. Thicknesses range 0.3-6mm standard.​

Common Sizes

Widths 1000-2000mm, lengths 2000-6000mm; gauges from 24 (0.64mm) to 3 (3.05mm).

310 Stainless Steel Plates

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₹ 330 / Kg Get Latest Price

Thickness5 mm
Width1000 mm
Length2000 mm
Grade310
Surface FinishHR
CertificationMill Test Cert
MaterialStainless Steel
StandardASTM A240
HardnessSoft Annealed

Stainless steel sheets, typically in grade 304, are flat, thin rolled plates prized for corrosion resistance and versatility in fabrication, cladding, and equipment linings. They feature finishes like 2B (mill), No. 4 (brushed), or mirror for aesthetic and functional uses, complementing prior round bars, angles, flats, channels, tubes, pipes, flanges, and fittings in industrial and structural applications.​

Specifications

Made per ASTM A240/A666 standards; SS 304 offers 18-20% Cr, 8-11% Ni, tensile strength 515-620 MPa, suitable up to 1500°F. Thicknesses range 0.3-6mm standard.​

Common Sizes

Widths 1000-2000mm, lengths 2000-6000mm; gauges from 24 (0.64mm) to 3 (3.05mm).

Carbon Steel Threaded Flange

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₹ 150 / Piece Get Latest Price

Flange TypeThreaded
Size2 in
Pressure Rating150
Face TypeRaised Face
FinishMachined
Material GradeASTM A105
StandardANSI B16.5

Stainless steel flanges are forged or cast components used to connect pipes, valves, and pumps in industrial piping systems, offering superior corrosion resistance in harsh environments. They adhere to standards like ASME B16.5, ASTM A182, and ANSI, with common grades including 304, 316, and 316L for applications in chemicals, oil & gas, and pharmaceuticals.​

Main Types
  • Weld Neck Flange: Tapered hub provides strength and stress reduction for high-pressure lines.​

  • Slip-On Flange: Slides over pipe ends and welds inside/outside, cost-effective for moderate pressures.​

  • Blind Flange: Seals pipe ends, used for testing or isolation.​

  • Socket Weld & Threaded: For smaller, high-pressure pipes with welding or threading.​

Key Specifications

Flanges range from Class 150 to 2500, sizes 1/2" to 60", with raised face (RF), flat face (FF), or ring type joint (RTJ) faces for gasketing. SS 304/316 ensures durability up to 1000°F.​

Alloy Steel Astm A 182 F22 Flanges

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₹ 150 / Piece Get Latest Price

Flange TypeSlip On
Nominal Size1 in
Pressure Rating150 Class
Steel GradeA182 F11
StandardANSI B16.5
FacingRaised Face
FinishMachined
End ConnectionRaised Face

Stainless steel flanges are forged or cast components used to connect pipes, valves, and pumps in industrial piping systems, offering superior corrosion resistance in harsh environments. They adhere to standards like ASME B16.5, ASTM A182, and ANSI, with common grades including 304, 316, and 316L for applications in chemicals, oil & gas, and pharmaceuticals.​

Main Types
  • Weld Neck Flange: Tapered hub provides strength and stress reduction for high-pressure lines.​

  • Slip-On Flange: Slides over pipe ends and welds inside/outside, cost-effective for moderate pressures.​

  • Blind Flange: Seals pipe ends, used for testing or isolation.​

  • Socket Weld & Threaded: For smaller, high-pressure pipes with welding or threading.​

Key Specifications

Flanges range from Class 150 to 2500, sizes 1/2" to 60", with raised face (RF), flat face (FF), or ring type joint (RTJ) faces for gasketing. SS 304/316 ensures durability up to 1000°F.​

Alloy Steel F22 Flanges

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₹ 121 / Piece Get Latest Price

Flange TypeWeld Neck
Nominal Size1 in
Pressure Rating150 Class
Steel GradeA182 F11
StandardANSI B16.5
FacingRaised Face
End ConnectionRaised Face

Stainless steel flanges are forged or cast components used to connect pipes, valves, and pumps in industrial piping systems, offering superior corrosion resistance in harsh environments. They adhere to standards like ASME B16.5, ASTM A182, and ANSI, with common grades including 304, 316, and 316L for applications in chemicals, oil & gas, and pharmaceuticals.​

Main Types
  • Weld Neck Flange: Tapered hub provides strength and stress reduction for high-pressure lines.​

  • Slip-On Flange: Slides over pipe ends and welds inside/outside, cost-effective for moderate pressures.​

  • Blind Flange: Seals pipe ends, used for testing or isolation.​

  • Socket Weld & Threaded: For smaller, high-pressure pipes with welding or threading.​

Key Specifications

Flanges range from Class 150 to 2500, sizes 1/2" to 60", with raised face (RF), flat face (FF), or ring type joint (RTJ) faces for gasketing. SS 304/316 ensures durability up to 1000°F.​

Alloy Steel Astm A 182 F11 Flanges

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₹ 123 / Piece Get Latest Price

Flange TypeWeld Neck
Nominal Size1 in
Pressure Rating150 Class
Steel GradeA182 F11
StandardANSI B16.5
FacingRaised Face
FinishMachined

Stainless steel flanges are forged or cast components used to connect pipes, valves, and pumps in industrial piping systems, offering superior corrosion resistance in harsh environments. They adhere to standards like ASME B16.5, ASTM A182, and ANSI, with common grades including 304, 316, and 316L for applications in chemicals, oil & gas, and pharmaceuticals.​

Main Types
  • Weld Neck Flange: Tapered hub provides strength and stress reduction for high-pressure lines.​

  • Slip-On Flange: Slides over pipe ends and welds inside/outside, cost-effective for moderate pressures.​

  • Blind Flange: Seals pipe ends, used for testing or isolation.​

  • Socket Weld & Threaded: For smaller, high-pressure pipes with welding or threading.​

Key Specifications

Flanges range from Class 150 to 2500, sizes 1/2" to 60", with raised face (RF), flat face (FF), or ring type joint (RTJ) faces for gasketing. SS 304/316 ensures durability up to 1000°F.​

Alloy Steel F22 Wnrtj Flanges

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₹ 150 / Piece Get Latest Price

Flange TypeSocket Weld
Nominal Size1 in
Pressure Rating150 Class
StandardANSI B16.5
FinishMachined

Alloy Steel F22 WNRTJ flanges are weld neck ring-type joint flanges made from ASTM A182 F22 chrome-moly alloy steel, designed for high-pressure, high-temperature applications like refineries and power plants. The tapered hub welds directly to pipes for stress reduction, while the RTJ groove accepts metallic ring gaskets (e.g., R, RX, BX types) for metal-to-metal sealing up to 2500# class.​

Key Features

F22 grade (2.25% Cr, 1% Mo) offers creep resistance to 1100°F (-20°F to 593°C min), with tensile strength ≥515 MPa. Sizes range 1/2"-48" NPS per ASME B16.5/B16.47, available in classes 150#-2500#.​

Specifications

Hub provides smooth bore alignment; dimensions match standard WN flanges but with RTJ recess (e.g., 4" Class 1500: OD 9", thickness 15/16", 8 bolts).​

ASTM A182 F304 / 304L Flange

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₹ 150 / Piece Get Latest Price

Flange TypeWeld Neck
Pressure Class150
Size1/2 inch
ASTM StandardASTM A182
Face TypeRaised Face
Material GradeASTM A182 F304
CertificationEN 10204 3.1

ASTM A182 F304/304L flanges are forged stainless steel components used for high-temperature pressure piping connections in chemical, oil and gas, and general industrial applications.​

Material Composition

Grade F304 contains up to 0.08% carbon, ≤2.00% manganese, ≤0.045% phosphorus, ≤0.030% sulfur, ≤0.75% silicon, 18.0-20.0% chromium, and 8.0-11.0% nickel; F304L limits carbon to 0.03% max for improved weldability.​

Mechanical Properties

Both grades offer minimum tensile strength of 515 MPa, yield strength of 205 MPa, and 35% elongation, with F304L providing better corrosion resistance in as-welded conditions.​

Types and Dimensions

Common types include weld neck, slip-on, blind, socket weld, threaded, and lap joint flanges per ASME B16.5, sized 1/2" to 24" NB in Class 150-2500 (e.g., Class 150 6" OD 381mm, thickness 55.6mm).​

SS 304L Blind Flange

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₹ 150 / Piece Get Latest Price

 

SS 304L blind flanges seal the ends of piping systems without internal access, made from low-carbon austenitic stainless steel (ASTM A182 F304L) for superior weldability and corrosion resistance in as-welded conditions. With max 0.03% carbon, they prevent carbide precipitation and intergranular attack, ideal for chemical, food, and pharmaceutical applications up to 870°C.  ​

Dimensions

Conform to ASME B16.5 standards, sizes 1/2" to 24" NPS in classes 150-2500. Example: 3" Class 150 has 8-1/4" OD, 1-1/8" thickness, 8 bolt holes; 4" weighs ~17 lbs with RF face.  ​

Specifications

Yield strength min 170 MPa, tensile 485 MPa, elongation 40%; tolerances per ASME include OD ±1.6 mm, thickness ±1.6 mm. Markings show size, class, grade, heat number.  ​

Long Weld Neck Flanges

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₹ 150 / Piece Get Latest Price

Weld neck carbon steel flanges feature a tapered hub and long neck welded directly to pipes for superior strength and reduced stress concentration in high-pressure systems. Common grades like ASTM A105 provide excellent weldability and toughness for temperatures up to 425°C.​

Dimensions

Per ASME B16.5 standards, sizes range from 1/2" to 24" NPS across classes 150-2500. For Class 300 1/2" size: OD 95 mm, thickness 12.7 mm, hub OD 38 mm, bore matches pipe schedule, bolt circle 66.7 mm with 4 x 1/2" bolts.​

Ibr Flanges

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₹ 850 / Piece Get Latest Price

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IBR FormForm IIIC
Material GradeASTM A105
Flange TypeSlip On
Pressure Class150
ServiceSteam
InspectionIBR Inspector
Certificate BodyIBR

Minimum order quantity: 1 Piece

Ace Alloys LLP offers a range of IBR (Indian Boiler Regulations) certified pipe fittings, including:

  • IBR flanges (various types such as weld neck, slip-on, socket weld, etc., used in boiler and pressure systems) — supplied according to industry standards and with appropriate certification.

  • IBR forged elbows, couplings, tees, reducers and other pipe fittings suitable for high-pressure and high-temperature applications.

Astm A182 F11 Flanges

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₹ 150 / Piece Get Latest Price

Material GradeASTM A182 F11
Flange TypeWeld Neck
Pressure Class150
Size3/4 inch
Face TypeRaised Face
TestingHydro Tested
CertificationEN 10204 3.1
ASTM StandardASTM A105

Stainless steel flanges are forged or cast components used to connect pipes, valves, and pumps in industrial piping systems, offering superior corrosion resistance in harsh environments. They adhere to standards like ASME B16.5, ASTM A182, and ANSI, with common grades including 304, 316, and 316L for applications in chemicals, oil & gas, and pharmaceuticals.​

Main Types
  • Weld Neck Flange: Tapered hub provides strength and stress reduction for high-pressure lines.​

  • Slip-On Flange: Slides over pipe ends and welds inside/outside, cost-effective for moderate pressures.​

  • Blind Flange: Seals pipe ends, used for testing or isolation.​

  • Socket Weld & Threaded: For smaller, high-pressure pipes with welding or threading.​

Key Specifications

Flanges range from Class 150 to 2500, sizes 1/2" to 60", with raised face (RF), flat face (FF), or ring type joint (RTJ) faces for gasketing. SS 304/316 ensures durability up to 1000°F.​

304 Stainless Steel Plate

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₹ 450 / Kg Get Latest Price

Thickness2 mm
Width1000 mm
Length2440 mm
Grade304
Surface Finish2B
MaterialStainless Steel
StandardASTM A240
CertificationMill Test Cert

Stainless steel sheets, typically in grade 304, are flat, thin rolled plates prized for corrosion resistance and versatility in fabrication, cladding, and equipment linings. They feature finishes like 2B (mill), No. 4 (brushed), or mirror for aesthetic and functional uses, complementing prior round bars, angles, flats, channels, tubes, pipes, flanges, and fittings in industrial and structural applications.​

Specifications

Made per ASTM A240/A666 standards; SS 304 offers 18-20% Cr, 8-11% Ni, tensile strength 515-620 MPa, suitable up to 1500°F. Thicknesses range 0.3-6mm standard.​

Common Sizes

Widths 1000-2000mm, lengths 2000-6000mm; gauges from 24 (0.64mm) to 3 (3.05mm).

Inconel Hex Bolt

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₹ 5000 / Piece Get Latest Price

SizeM12 x 50mm
Grade718
MaterialINCONEL
Thread TypeFull Thread
FinishPlain
Head TypeHexagonal
ACE ALLOYS LLP does offer Inconel and other nickel-alloy fasteners, including bolts that can be supplied in hex-head form on request. While their standard website doesn’t list a dedicated product page named “Inconel Hex Bolt,” their Nickel Alloy Fasteners range includes bolts (including hex bolts) in Inconel grades such as Inconel 600, Inconel 601, Inconel 625, Inconel 825, etc., which are typically available in bolt form including hex head and other fastener types

Alloy Steel F11 Round

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₹ 125 / Kg Get Latest Price

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Diameter200
Make/BrandALOK
ConditionCONE CAST
ShapeSquare
ApplicationForging
StandardASTM
TestingPMI

Minimum order quantity: 100 Kg

  • F11 Round Bar ASTM A182 Chrome Moly Alloy Steel Heat Treated – A high-grade ASTM A182 F11 alloy steel round bar (chrome-moly), heat treated and supplied typically with material test reports (MTR). Ideal for flanges, fittings, shafts, valves in high-pressure and high-temperature applications.

  • Hot Rolled Alloy Steel F11 Round Bar, 6 m – Hot-rolled F11 round bar available in long lengths (e.g., 6 m) — good for machining or fabrication into components.

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    Contact Us

    Manu Mehta
    Ace Alloys LLP
    301,B-Wing, Pratiksha Towers, R S Nimkar Marg, Foras Road
    Mumbai - 400008, Maharashtra, India

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