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Alloy steel flanges

Alloy steel flange, that is, the main material is alloy steel flange or end flange connectors. It contains alloy steel flange, known as alloy steel flange.

Alloy Steel Flanges, Alloy flanges are designed with care using current techniques under the visionary guidance of accomplished professionals at manufacturing unit.

Offered range is stringently tested on various parameters of quality for ensuring flawlessness and defect free. These products are widely used in various industries and widely appreciated by clients for owning unmatchable characteristics. Offered range supplied in quality assured packaging material.

Alloy Steel Flanges, Alloy flanges Finished

Natural, Nickel Plated, Electro Polished Plated or any coating as per customer specification.
Any kind of special die casting sand gravity die lost wax shell moulding castings and cast parts casting produced to user specifications. We can be more competitive than Chinese castings and cast parts made in China Taiwan Asia Korea as traditional Indian expertise in Brass castings and Brass casting is superior and Indian alloy Steel foundry / foundries are more competitive than other S.S. alloy Steel foundries.

Custom Alloy Steel Flanges, Alloy flanges

Alloy Steel Flanges, Alloy flanges are corrosion resistant and have a wide variety of uses. We carry a variety of threaded flanges, weld neck flanges and slip- on flanges and, of course, we can can custom build steel flanges to your specifications.

Our manufacturing arena is well known in the market that comprises of various flanges one of which is Alloy Steel flanges. They are available in variety such as weld neck, Deck flange, lap joint etc. They are made of steel and other metals thereby forming an alloy. These flanges have undergone stringent quality check and have been certified by national authorities.

Grades of Alloy Steel Flanges, Alloy flanges:We shall be pleased to develop Non-Standard

  • ASTM A105, ASTM A350 LF1, LF2 CL1/CL2, LF3 CL1/CL2
  • ASTM A694 F42, F46, F48, F50, F52, F56, F60, F65, F70
  • ASTM A182 F1, F5a, F9, F11, F12, F22, F91

Chemical Requirements (Composition, %, max)

Material SymbolCMnPSSiNiCrMoCuNVCo
ASTM A1050.350.60-1.050.0350.0400.10-0.350.400.300.120.40_0.08_
ASTM A350 LF20.300.60-1.350.0350.0400.15-0.300.400.300.120.40_0.080.02
ASTM A182 F3040.082.000.0450.0301.008.0-11.018.0-20.0_____
ASTM A182 F304L0.032.000.0450.0301.008.0-13.018.0-20.0_____
ASTM A182 F3160.082.000.0450.0301.0010.0-14.016.0-18.02.00-3.00____
ASTM A182 F316L0.032.000.0450.0301.0010.0-15.016.0-18.02.00-3.00____
ASTM A182 F3210.082.000.0450.0301.009.0-12.017.0-19.0_____
EN 10025 S235JR0.201.400.0450.045_____0.009__
20Mn0.17-0.230.70-1.000.0350.0350.17-0.370.300.25 0.25   
200.17-0.230.60-1.000.0300.0200.17-0.370.250.25 0.25   
16Mn0.13-0.191.20-1.600.0300.0200.20-0.600.300.30 0.25   

Mechanical Requirements

Material SymbolTensile Strength, min, MPaYield point, min, MpaElongation, min, %Reduction of area, min, %Hardness, max, HBMin. Impact
Average, J
Test Temperature, °C
ASTM A1054852502230187  
ASTM A350 LF2485-6552502230 20-46
ASTM A182 F3045152053050   
ASTM A182 F304L4851703050   
ASTM A182 F3165152053050   
ASTM A182 F316L4851703050   
ASTM A182 F3215152053050   

We carry a large inventory of Alloy Steel Flanges, Alloy flanges in many types and sizes.

The Alloy steel Socket weld flange has a high level of tensile strength which is beneficial in terms of the routine activity of this product. The product is fabricated by our professionals to ensure consistent flow of fluid through pipeline which in turn increases the overall flow and the performance of fluid transferring system. The given weld flange is highly demanded for its usage in small-sized high- pressure piping. 


  • Ideal for chemical process piping
  • Heavy load
  • Excellent sealing capabilities


  • Flanges form: Alloy Steel ASTM A 182, GR F1, F11, F22, F5, F9, F91
  • Flanges Size: 1/8″ NB TO 48″NB.
  • Flanges class: 150, 300, 400, 600, 900, 1500 & 2500

Other Grades of Alloy Steel Flanges

  • Alloy Steel F1 Flanges
  • Alloy Steel F5 Flanges
  • Alloy Steel F9 Flanges
  • Alloy Steel F11 Flanges
  • Alloy Steel F12 Flanges
  • Alloy Steel F22 Flanges
  • Alloy Steel F91 Flanges

Sunny Steel provide a wide range of steel products as Steel pipes, Seamless tube and seamless pipes, Alloy pipes, Pipe fittings, Composite steel pipe used in the industry, construction etc.



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