Alloy Steel Flange Manufacturers in India – Low Price! Buy High Quality Alloy Steel Flanges at Factory Prices! Low Price Guaranteed! We Will Quote for Alloy Steel Flanges in 2 Hours with Mill Test Certificates! Alloy Steel Flanges Available on Sale, by India’s Largest Stockholder and Manufacturer in Size Range of 1/2″ NB to 60″ NB. The most common materials in stock and regularly bought by our customers in alloy steel are ASTM A182 flanges. ASTM A182 alloy flanges are extremely ductile, strong and tough and easy to weld and offer oxidation and scaling resistance. These grades match with ASTM A335 alloy steel pipes. In addition to being the lowest cost supplier of flanges, buttweld pipe fittings, forged pipe fittings and alloy steel flanges; we are also one of the biggest carbon steel, alloy steel and stainless steel seamless pipes stockist, dealer and distributor in India.

We are Manufacturers of Various Types of Alloy Steel Flanges in India – Alloy Steel Slip On Flanges (SORF Flanges), Alloy Steel Weldneck Flanges (WN Flanges), Alloy Steel Blind Flanges (BLRF Flange), Alloy Steel Socket Weld Flanges, Alloy Steel Orifice Flanges, Alloy Steel High Hub Flanges, Alloy Steel Square Flanges, Alloy Steel Lap Joint Flanges, Alloy Steel Loose Flanges, Alloy Steel Flat Flanges/Plate Flanges, Alloy Steel Ring Type Joint Flanges (RTJ Flanges), Alloy Steel Threaded Flanges, Alloy Steel Expander Flanges, Alloy Steel Spectacle Flange.

Metallica is one of the largest alloy steel flanges manufacturer in India, with related gaskets, nuts and bolts. We are large volume alloy steel flanges manufacturers in India and overseas, and are able to give you the best price and quality just in time. All standard size and type in alloy steel flanges are available Ex-stock, and we can offer immediate delivery and inspection for all our goods. On-Time Delivery with Quality Assurance and Price Guarantee for Steel Flanges.

Alloy Steel Flange Manufacturer, Wholesaler, Dealer, Supplier and Distributor In India and Abroad
  • As one of the largest manufacturer of alloy steel flanges, we have over 6000 tons in stock

  • Alloy Steel Flanges Available at around Rs. 80/KG for Sale in India.

  • Our Annual Sales Volume for Alloy Steel Flanges is Over 25,000 tons in India and Overseas.

  • Alloy Steel Pipes, are Sold with Complete Range of Related Pipe Fittings and Flanges

Types of Alloy Steel Flanges

Threaded Flange NipoFlange
Socket-Weld Flange ElbowFlange and LatroFlange
Welding Neck Flange Swivel Flange
Slip-On Flange Expanding Flange
Lap Joint Flange Reducing Flange
Blind Flange Anchor Flanges
Long Weld Neck Flanges High Hub Flanges
Plate Flanges Orifice Flanges
Ring Type Joint Flanges Spectacle Blind Flanges
Square Flanges Spades & Ring Spacers

Production & Supply Range for Alloy Steel Flanges

Product Alloy Steel Flanges
Product Specification -Alloy Steel Flanges: ASTM/ASME SA/A182 F1, F5, F9, F11, F22, F91
-Low Temperature Alloy Steel Flanges: ASTM/ASME SA/A350 LF1, LF2, LF3
Types of Flanges Anchor Flanges, Blind Flanges, Expander Flanges, High Hub Flanges, Lap Joint Flanges, Long Weld Neck Flanges, Orifice Flanges, Plate Flanges, Ring Type Joint Flanges, Reducing Flanges, Slip On Flanges, Socket Weld Flanges, Spectacle Blind Flanges, Square Flanges, Spades & Ring Spacers, Threaded Flanges, Welding Neck Flanges
Flange Materials Stainless Steel, Carbon Steel, Alloy Steel, High Alloy Steel, Special Alloy Steel, Nickel Alloys, Aluminium, Copper Nickel
Size Range 1/2”- 60”(or as per customer drawing)
Pressure Ratings 150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64
Dimensional Specifications ANSI/ASME B16.5, B 16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, etc.
Surface Finish Sand Blast, Black Painting, Galvanizing Finish
Production Technique Forged, Heat Treated, CNC Machined, Drilled
Test Certificates Test Certificates are available with materials, as per EN 10204 3.1 or 3.2
Inspection Buyer Inspection or Third Party Inspection Acceptable. At Metallica, all fittings and flanges are subject to strict inspection at each stage of the production process, starting from raw material purchasing to product dispatch.
Packing Wooden Pallets, Gunny Bags, Wooden Box, or As per Customer Request
Price and Quality Guarantee 100% Price and Quality Guarantee
Delivery 100% On Time Delivery, 2-3 Days for In Stock Items, 15-30 Days for Volume Products

Types of Flange Connections

  1. Flange Face Type
  2. Flange Dimensions
  3. Flange Finish
  4. Types of Connections
  5. Pressure Temperature Ratings
  6. Material Types

ASME, ANSI and MSS Specifications

The standards govern the dimensions and tolerances to which fitting are manufactured:

  • ASTM A.182 – Forged or Rolled Alloy Steel Pipe Flanges & Fittings for high temperature service
  • ANSI B. 16.5 – Steel Pipe Flanges and Flanged Fittings (½ inch to 24 inch nominal diameter)
  • MSS SP.6 – Flange Facings
  • MSS SP.25 – Marking of flanges
  • MSS SP.39 – Bolts and Nuts for Flanges
  • MSS SP.44 – Large Diameter Pipeline Flanges. (Over 24 inch dia)
  • API-605 – Large Diameter Flanges for petroleum Usage. (Over 24 inch dia)
  • The following are not flange specifications but they influence the manufacture of forged steel flange:  • ANSI B. 31.10 – Code for Pressure Piping
      • ANSI B. 31.3 – Petroleum Refinery Piping
      • ANSI B. 31.4 – Oil Transportation Piping
      • ANSI B. 31.5 – Refrigeration Piping Systems
      • ANSI B. 31.7 – Nuclear Power Piping
      • ANSI B. 31.8 – Gas Transmission and Distribution Piping systems
      • ANSI B. 36.10 – Standard for Wrought Steel pipe
      • ANSI B. 36.19 – Standard for Stainless Steel Pipe
      • ANSI B. 16.10 – Valve Dimensions Face & End
      • ANSI B. 16.11 – Forged Fittings Socket Weld & Threaded

Advantages of Flanges Specifications

  • A new line can contain multiple pipe spools and can be manufactured in a workshop.
  • This pipe spools can be assembled in the plant without the need to be welded.
  • NDO (X-ray, Hydro test etc.) in the plant is not necessary, because this has been done in the workshop.
  • Blasting and painting in the plant is not necessary, because even this has been done in a workshop
    (only paint damages during installation should be repaired).

Disadvantages of Flanges Specifications

  1. Each flange connection can leak (some people claim that a flange connection is never 100 percent leak proof). Special controls are required in the selection and application of all these elements to attain a joint, which has acceptable leak tightness. However, it is not advisable to used flange connection in underground piping when it supposed to be buried. The flange is also the most common source of leak and fire in a process plant.
  2. Flanged pipe systems need much more space (just think of a pipe rack).
  3. Insulation of flanged pipe systems is more expensive (special flange caps).

Chemical Composition Of Alloy Steel Flange


F11 CL2 F22 CL3 F5 F9
CARBON 0.10-0.20 0.05-0.15 0.15 MAX 0.15 MAX
MANGANESE 0.30-0.80 0.30-0.60 0.30-0.60 0.30-0.60
PHOSPHORUS MAX 0.040 0.040 0.03 0.030
SULFUR MAX 0.040 0.040 0.03 0.030
SILICON 0.50-1.00 0.50 MAX 0.50 MAX 0.50-1.00
CHROMIUM 1.00-1.50 2.00-2.50 4.00-6.00 8.0-10.0
MOLYBDENUM 0.44-0.65 0.87-1.13 0.44-0.65 0.90-1.10

Mechanical Properties Of Alloy Steel Flange ASTM A182 F5, F9, F11, F22

F11 CL2 F22 CL3 F5 F9
TENSILE STRENGTH PSI (MPA) 70,000 (485) 75,000 (515) 70,000 (485) 85,000 (585)
YIELD STRENGTH PSI MIN 40,000 (275) 45,000 (310) 40,000 (275) 55,000 (380)
ELONGATION 2” % MIN 20 20 20 20
REDUCTION AREA % MIN 30 30 35 40
HARDNESS (HB) MAX* 143 ~ 207 156 ~ 207 143 ~ 217 179 ~ 217

Effects of Alloying Elements on Steel

•Manganese – strength and hardness; decreases ductility and weldability; effects hardenability of steel.
•Phosphorus – increases strength and hardness and decreases ductility and notch impact toughness of steel.
•Sulfur decreases ductility and notch impact toughness Weldability decreases. Found in the form of sulfide inclusions.
•Silicon – one of the principal deoxidizers used in steel making. In low-carbon steels, silicon is generally detrimental to surface quality.
•Copper – detrimental to hot-working steels; beneficial to corrosion resistance (Cu>0.20%).
•Nickel – ferrite strengthener; increases the hardenability and impact strength of steels.
•Molybdenum –  increases the hardenability; enhances the creep resistance of low-alloy steels.

Over 1000 Tons in Stock for Alloy Steel Flanges!

ISMT & Jindal Steel Pipes Dealers, Original MTR's Provided with All Materials

As one of the biggest alloy steel flanges stockholder and supplier in India, Metallica carries inventory of over 10,000 tons in its warehouses in Mumbai, Maharashtra India. We sell our alloy steel pipe products throughout India, and to international clients. We can supply our alloy steel tube products not only in industry-standard lengths and diameters, but also in custom length and diameters.

How are Steel Pipes Certified?

Certification of Steel Pipes

Manufacturers issue a Material Test Report or Mill Test Report to validate that the product meets the chemical analysis and mechanical properties specification. The MTR will contain all relevant data to the product and will accompany the product through its lifecycle.

The following are typical parameters that may be recorded on an MTR:

  • Chemical composition including carbon content, alloys, and sulfur
  • Material size, weight, identification, and grade
  • Material heat number, which ties back to the processing batch
  • Mechanical properties like tensile strength, yield strength, and elongation

At Metallica, we will Provide you with Original MTR’s for all Alloy Steel Pipe Products! We will Send Our Test Certificates, along with Quotation