Steelage Alloys is a leading manufacturer of SS 304 Seamless Pipe in India and it is also a producer of high-quality Stainless Steel 304 Seamless Pipe that meets the international standards. Our SS 304 Seamless Cold Drawn Pipes have been produced with high technology and therefore have very high accuracy, durability and strength. We have ASTM A312 SS 304 Seamless Pipes, which have high tensile strength, corrosion resistance, and mechanical properties as an ISO certified supplier of SS 304 Seamless Pipes under category SS 304 Seamless Pipes. The oil industry, petrochemical, power generation, and construction industries are some of the widely deployed users of these pipes. We provide SS 304 Seamless Pipes of any size and finishes as per customised requirements of industries.
Steelage Alloys is a recognized SS 304 Seamless Pipe Manufacturer in India. We offer a wide range of Stainless Steel 304 Seamless Pipes in stock, including SS 304/304L Seamless Pipe, designed to meet the diverse requirements of various industries. Our SS 304 Seamless Pipes are available in NB (Nominal Bore) sizes from 1/8 NPS to 12 Inch NPS with a wall thickness ranging from 0.6 mm to 12.7 mm, manufactured as per the highest industry standards for strength, reliability, and corrosion resistance.
We also supply Large Diameter SS 304 Seamless Pipes in multiple schedules such as SCH 5, SCH 10, SCH 40, SCH 80, and SCH XXS, suitable for high-temperature and high-pressure applications. In addition to seamless pipes, Steelage Alloys is also a leading Stainless Steel Welded Pipe Manufacturer in India, providing a complete range of solutions for industrial piping needs.
| Property | Details (SS 304 / 304L) |
|---|---|
| Material Grade | SS 304 / SS 304L |
| Standards | ASTM A312 / A213 / A269 |
| Size Range | 1/4" NB to 36" NB |
| Outer Diameter | 6 mm to 610 mm |
| Wall Thickness | 1.2 mm to 30 mm |
| Schedules | SCH 5, SCH 10, SCH 40, SCH 80, SCH 160, XXS |
| Pipe Type | Seamless / Cold Drawn |
| Length | SRL, DRL, Custom Cut Length |
| Ends | Plain End, Beveled End |
| Form | Round, Square, Rectangular |
| Property | Details (SS 304 Chemical Composition & Properties) |
|---|---|
| Carbon (C) | Max 0.08% | Typical: 0.05% — Controls hardness; low carbon improves weldability |
| Manganese (Mn) | Max 2.00% | Typical: 1.00% — Enhances strength and hot workability |
| Silicon (Si) | Max 0.75% | Typical: 0.40% — Improves oxidation resistance |
| Phosphorus (P) | Max 0.045% | Typical: 0.030% — Controlled to prevent brittleness |
| Sulfur (S) | Max 0.030% | Typical: 0.010% — Low sulfur maintains ductility |
| Chromium (Cr) | 18.0–20.0% | Typical: 18.5% — Gives corrosion & oxidation resistance |
| Nickel (Ni) | 8.0–10.5% | Typical: 9.25% — Stabilizes austenitic structure |
| Nitrogen (N) | Max 0.10% | Typical: 0.05% — Improves strength & pitting resistance |
| Iron (Fe) | Balance — Base metal forming the majority of the alloy |
| Copper (Cu) | Max 0.50% | Typical: 0.20% — Enhances corrosion resistance (if present) |
| Molybdenum (Mo) | Max 0.10% | Typical: 0.05% — Trace amounts improve pitting resistance |
| Density | 8.0 g/cm³ — Physical property |
| Melting Range | 1400–1450°C — Physical property |
| Thermal Conductivity | 16 W/m·K at 100°C |
| Electrical Resistivity | 720 nΩ·m at 20°C |
| Pipe Size (inches) | Schedule | 100°F | 200°F | 300°F | 400°F | 500°F | 600°F | 650°F | 700°F | 750°F |
|---|---|---|---|---|---|---|---|---|---|---|
| 1" | 40 | 3168 | 2629 | 2362 | 2171 | 2019 | 1924 | 1867 | 1824 | 1810 |
| 80 | 4213 | 3634 | 3265 | 3002 | 2791 | 2659 | 2580 | 2528 | 2501 | |
| 160 | 6140 | 5296 | 4759 | 4375 | 4068 | 3876 | 3761 | 3684 | 3646 | |
| 1 1/2" | 40 | 2257 | 1947 | 1750 | 1608 | 1496 | 1425 | 1383 | 1354 | 1340 |
| 80 | 3182 | 2744 | 2466 | 2267 | 2108 | 2009 | 1949 | 1909 | 1889 | |
| 160 | 4619 | 3984 | 3580 | 3291 | 3060 | 2916 | 2829 | 2772 | 2743 | |
| 2" | 40 | 1902 | 1640 | 1474 | 1355 | 1260 | 1201 | 1165 | 1141 | 1129 |
| 80 | 2747 | 2369 | 2129 | 1957 | 1820 | 1734 | 1682 | 1648 | 1631 | |
| 160 | 4499 | 3880 | 3486 | 3205 | 2980 | 2840 | 2755 | 2699 | 2671 | |
| 3" | 40 | 1806 | 1558 | 1400 | 1287 | 1196 | 1140 | 1106 | 1084 | 1072 |
| 80 | 2553 | 2202 | 1979 | 1819 | 1691 | 1612 | 1564 | 1532 | 1516 | |
| 160 | 3840 | 3312 | 2976 | 2736 | 2544 | 2424 | 2352 | 2316 | 2280 | |
| 4" | 40 | 1531 | 1321 | 1187 | 1091 | 1014 | 967 | 938 | 919 | 909 |
| 80 | 2213 | 1909 | 1715 | 1577 | 1466 | 1397 | 1355 | 1328 | 1314 | |
| 160 | 3601 | 3106 | 2791 | 2566 | 2386 | 2273 | 2206 | 2161 | 2138 | |
| 5" | 40 | 1342 | 1158 | 1040 | 956 | 889 | 847 | 822 | 805 | 797 |
| 80 | 1981 | 1709 | 1535 | 1411 | 1312 | 1250 | 1213 | 1189 | 1176 | |
| 160 | 3414 | 2945 | 2646 | 2433 | 2262 | 2155 | 2091 | 2049 | 2027 | |
| 6" | 40 | 1219 | 1052 | 945 | 869 | 808 | 770 | 747 | 732 | 724 |
| 80 | 1913 | 1650 | 1483 | 1363 | 1267 | 1208 | 1172 | 1148 | 1136 | |
| 160 | 3289 | 2836 | 2549 | 2343 | 2179 | 2076 | 2014 | 1973 | 1953 | |
| 8" | 40 | 1073 | 926 | 832 | 765 | 711 | 678 | 657 | 644 | 637 |
| 80 | 1692 | 1459 | 1311 | 1205 | 1121 | 1068 | 1036 | 1015 | 1005 | |
| 160 | 3175 | 2738 | 2460 | 2262 | 2103 | 2004 | 1944 | 1905 | 1885 | |
| 10" | 40 | 974 | 840 | 755 | 694 | 645 | 615 | 596 | 584 | 578 |
| 80 | 1609 | 1388 | 1247 | 1147 | 1066 | 1016 | 986 | 966 | 956 | |
| 160 | 3147 | 2714 | 2439 | 2242 | 2085 | 1986 | 1927 | 1880 | 1868 |