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Gayatri Tubes is a manufacturer and wholesaler of Stainless Steel 304 / 304L / 304H Pipes. We offer the pipes in all the three grades of stainless steel. The SS 304 pipes are available in multiple forms such as ERW, welded, seamless, and electro-polished, round, rectangular, thick and thin wall pipes. The Stainless Steel 304 welded pipes have high mechanical strength due to the duplex microstructure of the steel. Stainless Steel 304L Seamless pipes are manufactured using 50-50 austenitic and ferritic steel that give them advantages over other SS pipes. The SS 304 EFW pipes thus have high strength and used in wide applications. They have characteristics of both ferritic and austenitic steel. As a result, they possess high ductility, strength, and good corrosion resistance. The SS 304L pipes show resistance in oxidizing conditions at a temperature of 899 degrees C and 1650 degrees F. Due to the low-carbon variety they are workable in severe corrosive conditions as well except in the stress relief environment.
On the other hand, the SS 304H pipes are good for high-temperature applications due to high-carbon content. The servicing temperature of the stainless steel pipes is above 525 degrees C as they show high resistant properties at such temperature. All the Stainless Steel 304 / 304L / 304H Seamless Pipes are useful in offshore, petrochemical, filtration, gas, oil, refrigeration, and more industry. These pipes fit all such industries and thus we offer them in different sizes and shapes. We provide elliptical, triangular, square and round shape. They are an important product in the sanitary industry where high corrosion resistance is required. Such SS 304/304L/304H pipes are easy to maintain and clean and thus they are used in sanitary piping.
Moreover, they are also used in pressure piping where various types such as electric fusion welded pipe, welded and seamless pipes are used. These pipes have a large diameter that makes it suitable for high temperature as well as pressure applications. Such pipes are useful in diverse conditions only when are of good quality. Therefore, we perform all necessary tests on them such as hardness, PMI, IGC and more to check their quality and performance at different working parameters.
| STANDARD | UNS | WERKSTOFF NR. | AFNOR | EN | JIS | BS | GOST |
| SS 304 | S30400 | 1.4301 | Z7CN18‐09 | X5CrNi18-10 | SUS 304 | 304S31 | 08Х18Н10 |
| SS 304L | S30403 | 1.4306 / 1.4307 | Z3CN18‐10 | X2CrNi18-9 / X2CrNi19-11 | SUS 304L | 3304S11 | 03Х18Н11 |
| SS 304H | S30409 | 1.4948 | - | - | - | - | - |
| Specifications | ASTM A312, A358 / ASME SA312, SA358 |
| Outside Diameter | 6.00 mm OD up to 914.4 mm OD, Sizes up to 24" NB available Ex-stock, OD Size Steel Tubes available Ex-stock |
| Thickness Range | 0.3mm – 50 mm, SCH 5, SCH10, SCH 40, SCH 80, SCH 80S, SCH 160, SCH XXS, SCH XS |
| Type | Seamless / ERW / Welded / Fabricated / CDW |
| Form | Round Pipes, Square Pipes, Rectangular Pipes |
| Length | Single Random, Double Random & Required Length |
| End | Plain End, Beveled End, Treaded |
| Outside Finish | 2B, No.4, No.1, No.8 Mirror Finish for Stainless Steel Pipes, Finish as per customer Requirements |
| Delivery Condition | Annealed and Pickled, Polished, Bright Annealed, Cold Drawn |
| EN 10216-5 | EN 10216 304 Seamless Steel Pipe, EN 10216-5 1.4301 Seamless Steel Pipes for pressure purposes |
| EN 10217-7 | EN 10217 304 Welded Steel Pipe, Steel EN 10217-7 1.4301 Welded Pipes for pressure purposes |
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N |
| SS 304 | 0.08 max | 2.0 max | 0.75 max | 0.045 max | 0.030 max | 18 – 20 | - | 8 – 11 | - |
| SS 304L | 0.035 max | 2.0 max | 1.0 max | 0.045 max | 0.03 max | 18 – 20 | - | 8 – 13 | - |
| SS 304H | 0.10 max | 2.0 max | 0.75 max | 0.045 max | 0.03 max | 18 – 20 | - | 8 – 10.5 | - |
| Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 8.0 g/cm3 | 1400 °C (2550 °F) | Psi – 75000 , MPa – 515 | Psi – 30000 , MPa – 205 | 35 % |
