SS 304/304L Flange Manufacturers, SS 304 Slip On Flange Manufacturers, SS 304L Weld Neck Flange Suppliers in India

Stainless Steel ASTM A182 F304 Flange Factory, SS 304 Flange Exporters in India, Threaded SS 304 Flange Exporters

WNR. 1.4301 Flanges, UNS S30400 Flanges, AISI 304 Flanges, AISI 304L Flanges, 1.4306 Flanges, UNS S30403 Flanges

SS 304/304L Flange Manufacturers in India

We are a leading stainless steel 304/304L flange manufacturers and suppliers in India, with ex stock inventory of 600 tons. Stainless steel 304 flanges are used for connecting pipes, valves, pumps and other equipment to form a piping system. The use of flange provides easy access for cleaning, inspection or modification. Flanges are usually welded or screwed. Flanged joints are made by bolting together two flanges with a gasket between them to provide a seal.

We are manufacturers of all types of flanges such as Weld Neck Flange, Slip On Flange, Blind Flange, Plate Flange, Threaded Flange, Socket Weld Flange, Lap Joint Flange, Tubesheet, Long Weld Neck Flange and, Anchor Flange. We specialize in producing Orifice Flange, Long Welding Neck Flanges, Expander Flange and Reducing Flange. We are manufacturers of SS 304 flanges in size range of 1/2″ (15 NB) to 48″ (1200NB), in compliance with dimensions as per ANSI B16.5, ANSI B16.47 Series A & B, MSS SP44, ASA, API-605, AWWA, Custom Drawings. Additionally, we can produce custom size flanges and rings for all our customers. As one of the leading SS 304 flange manufacturers, we stock over 80 tons of stainless steel flanges. We can deliver custom size CNC machined flanges in 7 days, and standard size flanges in 2-3 days.

Product Stainless Steel 304/304L Flanges
Equivalents WNR. 1.4301, UNS S30400, AISI 304, AISI 304L, 1.4306, UNS S30403
Specification A182 F304, A182 F304L
Size 1/2″ (15 NB) to 48″ (1200NB)
Standards ANSI B16.5, ANSI B16.47 Series A & B, MSS SP44, ASA, API-605, AWWA, Custom Drawings
Pressure Rating 150, 300, 400, 600, 900, 1500, 2500 | PN6, PN10, PN16, PN25, PN40, PN64 etc.
Packing Wooden Pallet or Box Packing
Services Cutting, CNC Machining, Threading, Polishing
Stainless Steel 304 Flanges Manufacturers, Suppliers, Exporters

We Sell High Quality SS 304 Flanges at Reasonable Prices!

High Quality, But Low Prices for SS 304 Flanges!

If you are looking for high quality stainless steel 304 flanges manufacturer, contact us on sales@metline.in or +919987448842

What is a Flanges? What are the Various Types of Flanges?

A flange is type of fitting used to connect pipes, valves, pumps and other equipment to form a piping system. A flanged joint involves three separate components; the flanges, the gaskets, and the bolting. One of the most important advantage of using a flange is that it allows more flexibility in maintenance.

The various types of flanges include: Weld neck Flanges (WNRF), Slip-on Flanges (SORF), Blind Flanges (BLRF), Lap Joint Flanges, (SOLJ), Socket-weld Flanges (SWRF), Screwed (Threaded) Flanges, Long weld neck Flanges (LWNRF), Spectacle Blind Flanges, Spacer & Blind Flanges, Ring Type Joint Flanges (RTJ), Reducing Flanges, Raised Face (RF) Flanges, Orifice Flanges, Large Diameter Flanges, Custom Flanges, Drawing Flanges, Forged Flanges, Plate Flanges, Flat Face Flanges, etc.

Standards & Specifications for Manufacturing Flanges

  • ASME B16.5 (Pipe Flange)
  • A403/A403M (Wrought Austenitic Stainless Steel Piping Fittings)
  • A182/A182M (Alloy Steel Forgings for high-Temperature)
  • A105/A105M (Carbon Steel Forgings for Piping)
  • A234/A234M (Piping Fittings of Carbon Steel and Alloy Steel for Moderate and High Temperature)
  • A350/A350M (Carbon Steel and Low-Alloy Steel Forgings, Requiring Notch Toughness Testing)

What are the Main Flange Manufacturing Grades?

Stainless Steel Flange Carbon Steel Flange Alloy Steel Flange
F304 (1.4301) Q345 15CrMo/35CrMo
F304L (1.4307) 20/35/45/ 42CrMo/1Cr5Mo
F321 (1.4541) 20Mn/50Mn 12CrMoV
F316L(1.4404) A105N F5/F9/F11/F22
F316Ti(1.4571) C22.8/P250GH
F347 (1.4550) A350LF2
F 310/310S TstE355
F51 (1.4462)
F53(1.4410)
F55(1.4501)
F60

What is 304 Stainless Steel? About 304 Stainless Steel

Stainless steel 304(SS304) is the most basic stainless steel known as 18-8 grade with higher chromium and low carbon content. The low carbon content restricts carbide precipitation during welding as well as minimizes its susceptibility to intergranular corrosion. Stainless steel 304L(SS304L) is an extra low-carbon variation of SS304 with a 0.03% maximum carbon content that eliminates carbide precipitation due to welding. Both SS304 and SS304L have excellent resistance to a wide range of atmospheric, chemical and petrochemical, and food industry corrosions. Usually, they can be used in applications with the maximum temperature of 1650°F[900°C] exhibiting good oxidation resistance.

304L alloy’s lower carbon content helps minimize/eliminate carbide precipitation during the welding process. This allows 304L stainless steel to be used in the “as-welded” state, even in severe corrosive environments.

If you were to use standard 304 stainless in the same way, it would degrade much faster at the weld joints.

Basically, using 304L eliminates the need to anneal weld joints prior to using the completed metal form—saving time and effort.

In practice, both 304 and 304L can be used for many of the same applications. The differences are often minor enough that one isn’t considered massively more useful over the other. When stronger corrosion resistance is needed, other alloys, such as grade 316 stainless steel, are usually considered as an alternative.

Chemical Composition of 304 Stainless Steel, WNR. 1.4301, UNS S30400

Chemical Composition %
  C Mn Si P S Cr Ni Fe
304 0.08 max. 2.00 max. 1.00 max. 0.045 max. 0.03 max. 18.0 – 20.0 8.0 – 10.5 Balance
304L 0.03 max. 2.00 max. 1.00 max. 0.045 max. 0.03 max. 18.0 – 20.0 8.0 – 12.0 Balance
304H 0.04-0.10 2.00 max. 1.00 max. 0.045 max. 0.03 max. 18.0 – 20.0 8.0 – 12.0 Balance

Equivalents of 304 Stainless Steel

UNS Designation & International Equivalent for Stainless Steel 304
Type UNS JIS EN/DIN EN/BS EN/NF ISO GB GOST
304 S30400 SUS304 X5CrNi18-10 304S31 Z7CN18.09 11 0Cr18Ni9 08KH18H10
304L S30403 SUS304L X2CrNi19-11 304S11 X2CrNi19-11 10 00Cr19Ni11 03KH18H11

Mechanical Properties for WNR. 1.4301, UNS S30400, 304 Stainless Steel

  304 304L 304H
Density 8 8 8
Melting Range,℃ 1400 ℃ 1400 ℃ 1400 ℃
Elongation % 40 40 40
Tensile Strength (Mpa) 515 485 515
Yield Strength (Mpa) 205 170 205
Hardness (Brinell) 201 201 201

Physical Properties of WNR. 1.4301, UNS S30400, 304 Stainless Steel

Grade Density (kg/m3) Elastic Modulus (GPa) Mean Coefficient of Thermal Expansion (m/m/0C) Thermal Conductivity (W/m.K) Specific Heat 0-1000C (J/kg.K) Electrical Resistivity (n.m)
0-1000C 0-3150C 0-5380C at 1000C at 5000C
304 8000 193 17.2 17.8 18.4 16.2 21.5 500 720

Applications of WNR. 1.4301, UNS S30400, 304 Stainless Steel

Pipeline Transport, Boiler Pipe, Hydraulic/Automobile Pipe, Oil/Gas Drilling, Food/Beverage/Dairy Products, Machinery Industry, Chemical Industry, Mining, Construction & Decoration, Special Purpose

  • Off-Shore Oil Drilling Companies
  • Power Generation
  • Petrochemicals
  • Gas Processing
  • Specialty Chemicals
  • Pharmaceuticals
  • Pharmaceutical Equipment
  • Chemical Equipment
  • Sea Water Equipment
  • Heat Exchangers
  • Condensers
  • Pulp and Paper Industry

Various Product Search Related Keywords or Tags

SS 304 Flange Suppliers, Stainless Steel 304 Flange Manufacturers, A182 F304 Flange Manufacturers, UNS S30403 Seamless Pipe Factory, SS 304L Flange Manufacturers, SS 304 Weld neck Flanges (WNRF), SS 304 Slip-on Flanges (SORF), SS 304 Blind Flanges (BLRF), SS 304 Lap Joint Flanges, (SOLJ), SS 304 Socket-weld Flanges (SWRF), SS 304 Screwed (Threaded) Flanges, SS 304 Long weld neck Flanges (LWNRF), SS 304 Spectacle Blind Flanges, SS 304 Spacer & Blind Flanges, SS 304 Ring Type Joint Flanges (RTJ), SS 304 Reducing Flanges, SS 304 Raised Face (RF) Flanges, SS 304 Orifice Flanges, SS 304 Large Diameter Flanges, SS 304 Custom Flanges, SS 304 Custom Drawing Flanges, SS 304 Forged Flanges, SS 304 Plate Flanges, SS 304 Flat Face Flanges