SS 304/304L Welded Pipe Manufacturers in India

We are a leading stainless steel 304 welded pipe manufacturers, with ex stock inventory of 600 tons. We manufacture, stock and sale ss 304 welded pipes in round, square and rectangular form with either mill finish or polished surface. Mill finish (Annealed & Pickled) stainless steel 304 welded pipes are generally used for industrial applications, where as polished ss 304 welded pipes are used for architectural and structural applications. Given our daily sales volume of 20-30 tons of stainless steel 304/304L welded pipes in India, we are capable of offering our customers with the best quality at lowest prices in the industry. We sincerely welcome new and old customers to co operate with us for all their stainless steel 304 welded pipes requirements.

SS 304 welded pipes are manufactured from plate or from continues coil or strips. To manufactured SS 304 welded pipe, first, plate or coil is rolled in the circular section with the help of plate bending machine or by a roller in the case of continues process.

  • ASTM A312 – This specification covers seamless, straight-seam welded, and heavily cold worked welded austenitic stainless steel pipe intended for high-temperature and general corrosive service
  • ASTM A358 – This specification includes electric-fusion-welded austenitic chromium-nickel stainless steel pipe.
Product Stainless Steel 304 Welded Pipes
Equivalents WNR. 1.4301, UNS S30400, AISI 304, AISI 304L, 1.4306, UNS S30403
Specification ASTM A 312/ASME SA 312, ASTM A 358/ASME SA 358, ASTM A554, ASTM A249
Size 1/2″ to 48″, Thickness: SCH 5S, 10S, 40S (STD), 80S (XS), 160, XXS
Length (mm) 6000, 3000, 2000, 12000, Custom Length
Finish Annealed & Pickled, 2B, No.4, Mirror, Polish
Packing Bundled Packing
Services Cutting, Beveling, Threading, Polishing
304L Stainless Steel Welded pipes Dealers in Mumbai Exporters in India

We Sell High Quality SS 304 Welded Pipes at Reasonable Prices!

High Quality, But Low Prices for SS 304 Welded Pipe!

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

Product Range for SS 304 Welded Pipes

Product Stainless Steel 304 Welded/ERW/Fabricated Pipes & Tubes
Standard Size 1/2″ NB to 16″ NB
ERW Type 1/2″ NB to 24″ NB
Fabricated (EFW Type) 6″ NB to 100″ NB
Unit Length 6 m, 12 m, 18 m, Custom Length
Thickness (mm) 0.8mm – 30 mm
Surface Finish Anodized, Brushed, Mill Finished, Solution Annealed and Pickled, Polished Grit 120 – 600, Mirror Polished
Shape Round, Square, Rectangular
Specification ASTM A554, ASTM A312, ASTM A358 Class I to V, ASTM A249, ASTM A213, ASTM A268, ASTM A269, ASTM A789, ASTM A790
Type Welded, Fabricated, ERW (Electrical Resistance Weld), LSAW Pipes
Material Grades Austenitic Stainless Steel:
304/304L/304H(1.4301/1.4306/1.4948);
316/316L(1.4401/1.4404); 316Ti(1.4571); 321(1.4541); 309S
(1.4833); 310S(1.4845); 317L(1.4438)321H(1.4878); 347H (1.4550);
Duplex Stainless Steel: S32001, S32003, S31500, 2205(1.4462);
S32304,(1.4362);S31803,2507 (S32750),
S32760(1.4501);S32101(1.4162);
Super Austenitic Stainless Steel: 904L, S30432, S31042, 6Mo
(S31254, N08367)
Nickel Base Alloys: Alloy 20 (UNS N08020), Monel 200 (UNS
02200), Monel 400 (UNS N04400), Incoloy 800 (UNS N08800),
Incoloy 800H (UNS N08810), Incoloy 800HT (UNS N08811),
Incoloy 825 (UNS N08825), Inconel 600 (UNS N06600), 4J29,
4J36, GH3030, GH3039, C276 (UNS N10276)
Martensitic Stainless Steel: 410(1.4006), 410S(1.4000),
420(1.4021)
Ferritic Stainless Steel: 405(1.4002), 430(1.4016)
Applications Decoration, Construction, Hardware, Mechanical Structure, Chemical Equipment, Pharmaceutical Equipment, Food Processing
Certification EN 10204 3.1
Testing Hydro Tested, Chemical, Mechanical Test, PMI
Inspection Third Party Inspection, Buyer Inspection
Packing Weaving Bag, Seaworthy Bundles, Wooden Case if required
Delivery Time 1-2 Days for Material in Stock, 7-30 Days for Make to Order Materials
End Plain Ends, Bevelled Ends, Threaded Ends

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

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