SS 304/304L Seamless Pipe Manufacturers in India
We are a leading stainless steel 304 seamless pipe manufacturers, with ex stock inventory of 600 tons. We manufacture, stock and sale ss 304 seamless pipes in round, square and rectangular form with either mill finish or polished surface. Mill finish (Annealed & Pickled) stainless steel 304 seamless pipes are generally used for industrial applications, where as polished ss 304 seamless pipes are used for architectural and structural applications. Given our daily sales volume of 20-30 tons of stainless steel 304/304L seamless 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 seamless pipes requirements.
Our production range for seamless pipes and tubes ranges from 6mm OD upto 710mm OD with thickness upto 50mm. Metline has developed itself as a leading 304 seamless steel pipes manufacturer and supplier to the global market. Apart from stainless steel 304 seamless pipes 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 Seamless Pipes |
| Equivalents | WNR. 1.4301, UNS S30400, AISI 304, AISI 304L, 1.4306, UNS S30403 |
| Specification | ASTM A 312/ASME SA 312, ASTM A 213/ASME SA 213, ASTM A790, ASTM A815 |
| 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 |
We Sell High Quality SS 304 Seamless Pipes at Reasonable Prices!
If you are looking for high quality stainless steel 304 seamless pipe manufacturer, contact us on sales@metline.in or +919987448842
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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