Carbon Steel Flange Manufacturers in India – Low Price! Buy High Quality Carbon Steel Flanges at Factory Prices! Low Price Guaranteed! We Will Quote for Carbon Steel Flanges in 2 Hours with Mill Test Certificates! Carbon 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 carbon steel are ASTM A105, A350 flanges. In addition to being the lowest cost supplier of flanges, buttweld pipe fittings, forged pipe fittings and carbon steel flanges; we are also one of the biggest carbon steel and stainless steel seamless pipes stockist, dealer and distributor in India.

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

Metallica is one of the largest carbon steel flanges manufacturer in India, with related gaskets, nuts and bolts. We are large volume carbon 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 carbon 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.

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

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

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

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

Types of Carbon 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 Carbon Steel Flanges

Product Carbon Steel Flanges
Product Specification ASTM/ASME A105, A350
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, 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 Carbon Steel Flange

Element Composition, %
Carbon 0.35 max
Manganese 0.60-1.05
Phosphorus 0.035 max
Sulfur 0.040 max
Silicon 0.10-0.35
Copper 0.40 max (1)
Nickel 0.40 max (1)
Chromium 0.30 max (1-2)
Molybdenum 0.12 max (1-2)
Vanadium 0.08 max
(1) The sum of copper, nickel, chromium, molybdenum and vanadium shall not exceed 1.00%.
(2) The sum of chromium and molybdenum shall not exceed 0.32%.
For each reduction of 0.01% below the specified carbon maximum (0.35%), an increase of 0.06% manganese above the specified maximum (1.05%) will be permitted up to a maximum of 1.35%.

Frequently Used ASTM Grades

Material Pipes Fttg Flg Valves Bolts and Nuts
Carbon Steel A106 Gr A A234 Gr WPA A105 A216 Gr WCB A193 Gr B7
A194 Gr 2H
A106 Gr B A234 Gr WPB A105 A216 Gr WCB
A106 Gr C A234 Gr WPC A105 A216 Gr WCB
Carbon Steel
A335 Gr P1 A234 Gr WP1 A182 Gr F1 A217 Gr WC1 A193 Gr B7
A194 Gr 2H
A335 Gr P11 A234 Gr WP11 A182 Gr F11 A217 Gr WC6
A335 Gr P12 A234 Gr WP12 A182 Gr F12 A217 Gr WC6
A335 Gr P22 A234 Gr WP22 A182 Gr F22 A217 Gr WC9
A335 Gr P5 A234 Gr WP5 A182 Gr F5 A217 Gr C5
A335 Gr P9 A234 Gr WP9 A182 Gr F9 A217 Gr C12
Carbon Steel
A333 Gr 6 A420 Gr WPL6 A350 Gr LF2 A352 Gr LCB A320 Gr L7
A194 Gr 7
A333 Gr 3 A420 Gr WPL3 A350 Gr LF3 A352 Gr LC3

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 10000 Tons in Stock for Carbon Steel Flanges!

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

As one of the biggest carbon 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 carbon steel pipe products throughout India, and to international clients. We can supply our carbon 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 Carbon Steel Pipe Products! We will Send Our Test Certificates, along with Quotation