SS 304/304L Heat Exchanger Tube Manufacturers in India

We are a leading stainless steel 304 heat exchanger pipe and tube manufacturers in India, with annual sales of over 1200 tons. We manufacture, stock and sale ss 304 heat exchanger tubes in seamless and welded form with either mill finish or polished surface. Given our daily sales volume of 20-30 tons of stainless steel 304/304L pipes and tubes 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 heat exchanger tube requirements. All types of stainless steel 304 seamless heat exchanger tubes produced by Metline are adequately tested (Eddy Current/ Hydrostatic/ Ultrasonic/ Intergranular Corrosion), to meet the most demanding requirements of our customers. We produce heat exchanger tubes in various other grades such as 316L, TP304H, TP347H,  TP317, 317L, TP321, 321H, TP310, 310S etc.

Our production range for heat exchanger pipe and tubes ranges from 6mm~610mm OD with thickness of 0.8mm to 30mm. Metline has developed itself as a leading 304 seamless heat exchanger tube manufacturer and supplier to the global market. Apart from stainless steel 304 heat exchanger tubes and carbon steel seamless pipes & tubes for the oil and gas industry, we specialise in the export of OCTG, Line Pipes, Structural Pipes and Pipes for Mechanical Engineering.

Product Stainless Steel 304 Heat Exchanger Pipes & Tubes
Equivalents WNR. 1.4301, UNS S30400, AISI 304, AISI 304L, 1.4306, UNS S30403
Specification ASTM A249, A269, A312, A213, A688, DIN 17455, EN 10217-7 etc.
Size 6mm~200mm OD, 0.10mm~8.0mm Thickness
Length (mm) 6000, 3000, 2000, 12000, Custom Length
Finish Annealed & Pickled, 2B, No.4, Mirror, Polish
Packing Bundled Packing
Services Cutting, Beveling, Threading, Polishing
SS 304 304L Heat Exchanger Pipe Tubes Manufacturers, Suppliers

We Sell High Quality SS 304 Heat Exchanger Pipes & Tubes at Reasonable Prices!

High Quality, But Low Prices for SS 304 Heat Exchanger Tubes!

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

What is a Heat Exchanger Tube?

Heat Exchanger tubes are metal tubes mainly used to produce shell and tube heat exchanger for the transfer of heat in industrial process applications. Heat Exchanger tubes are available in a variety of diameters and lengths. The U-tube heat exchangers are designed for a wide range of liquid to liquid and steam to liquid applications.

These tubes are commonly manufactured with an O.D. of 5/8″, 3/4″, 1″, 2″ upto 12″. Heat Exchnager tubes can also be internally and externally enhanced to further increase their efficiency.

Metline is a leading manufacturer and supplier of stainless steel 304/304 heat exchanger tubes for the transfer of heat in industrial process applications. Our pipe manufacturing unit is specialized in producing heat exchanger tubes in seamless, welded and cold drawn type in grades as below:

  • Stainless steel (304L, 316L)
  • Titanium alloy (Ti CP Grade 2)
  • Austenitic stainless steels (904L)
  • Nickel alloys (C276, C22, Alloy 600)

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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