Harsh Metalloys, a renowned manufacturer and supplier in Mumbai, India, offers premium-quality Stainless Steel Seamless Tubing designed for high-performance across a wide range of industries. Seamless tubing is produced without any welds, ensuring superior strength, uniformity, and corrosion resistance. Manufactured in compliance with international standards such as ASTM A213, A269, and A511, our stainless steel seamless tubes are available in grades like 304, 316, 321, and more. Known for their durability, precision, and smooth internal finish, Harsh Metalloys’ seamless tubing is ideal for high-pressure, high-temperature, and sanitary applications across global markets.
Stainless Steel Seamless Tubing is typically made from grades such as 304/304L, 316/316L, and 321, containing chromium (18–20%), nickel (8–14%), and in some grades, molybdenum (2–3%). These compositions offer excellent resistance to oxidation, corrosion, and stress corrosion cracking. The tubing exhibits tensile strength of 515–620 MPa and yield strength of 205–290 MPa, depending on the grade. It also offers excellent elongation and ductility. Harsh Metalloys ensures precise wall thickness, straightness, and superior surface finish, making the tubes highly reliable in critical operations.
| Range : | 6NB to 1200NB |
| Outer Diameter : | 1/8″ NPS to 12″ NPS |
| Thickness : | 0.6 mm to 12.7 mm |
| Schedules : | SCH. 5, 10, 20, 30, 40, 60, 80, 100, 120, 140, 160, XXS. |
| Length : | Single Random, Double Random & Cut Length |
| Specifications : | ASTM A312 / ASTM SA312 |
| Types : | Round, Square, Rectangle, Hydraulic, Honed Tubes |
| End : | Plain End, Beveled End |
| Grade | UNS # | Content % by weight | |||||||
| Carbon | Manganese | Phosphorus | Sulfur | Silicon | Chromium | Nickel | Molybdenum | ||
| TP304 | S30400 | 0.08 | 2.00 | 0.045 | 0.030 | 1.00 | 18 – 20 | 8 – 11 | x |
| TP304L | S30403 | 0.035 | 2.00 | 0.045 | 0.030 | 1.00 | 18 – 20 | 8 – 13 | x |
| TP316 | S31600 | 0.08 | 2.00 | 0.045 | 0.030 | 1.00 | 16 – 18 | 10 – 14 | 2 – 3 |
| TP316L | S31603 | 0.035 | 2.00 | 0.045 | 0.030 | 1.00 | 16 – 18 | 10 – 14 | 2 – 3 |
| Steel Grade | N/mm 2 MIN. Tensile Stress | N/mm 2 MIN. Proof Stress | % MIN. Elongation | HRB MAX. Hardness |
| SUS304 | 520 | 205 | 40 | 90 |
| SUS304L | 480 | 175 | 40 | 90 |
| SUS310S | 520 | 205 | 40 | 90 |
| SUS316L | 480 | 175 | 40 | 90 |
| SUS321 | 520 | 205 | 40 | 90 |
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Stainless steel seamless tubing is a high-strength, uniform tube without welds, offering excellent corrosion resistance and durability. It’s used in demanding applications across aerospace, automotive, medical, and industrial sectors.
SS hydraulic seamless tubing is a high-strength, corrosion-resistant tube used in hydraulic systems. Its seamless construction ensures uniformity and reliability under high pressure, making it ideal for demanding hydraulic applications.
Stainless steel API seamless pipes are high-strength, corrosion-resistant tubes manufactured to API standards, used for oil and gas transportation and drilling applications, offering durability and reliability in harsh conditions.
SS chrome-molybdenum seamless tubing is a high-strength, alloyed steel tube that offers excellent resistance to high temperatures and pressure. It’s used in demanding applications like power generation and oil and gas industries.
Stainless steel high-temperature seamless tubing is designed to withstand extreme heat while maintaining strength and corrosion resistance. It’s used in applications like furnaces and heat exchangers where high-temperature performance is crucial.
Stainless steel galvanized seamless tubing is coated with zinc for added corrosion resistance, combining the durability of stainless steel with enhanced protection against rust and environmental damage for various applications.
All stainless steel seamless tubings are well packed. Materials used must be of high quality for damage or corrosion prevention while in transit. Timely delivery is the essence of customer satisfaction and it is achieved by using efficient transportation modes. In this transparency, all necessary product documentation will be provided to the clients at the time of delivery, ensuring that their service experience will be both smooth and reliable.
Stainless Steel Seamless Tubing is widely used in applications demanding high strength, cleanliness, and resistance to corrosion. Industries such as oil and gas, petrochemicals, pharmaceuticals, food processing, and power generation rely heavily on seamless tubes for transporting fluids and gases under high pressure and temperature. These tubes are also used in heat exchangers, condensers, instrumentation, and hydraulic systems. Harsh Metalloys offers customized tubing solutions with precise diameters and finishes, ensuring optimal performance in even the most demanding environments. Their seamless construction eliminates the risk of weak points, making them the preferred choice for critical engineering applications.
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