Harshita Stainless is a leading manufacturer of Delhi-based Stainless Steel Seamless Pipes, providing high-integrity piping solutions for demanding industrial purposes. These pipes are produced without welds through extrusion or rotary piercing, yielding perfect integrity, uniform thickness, and superior pressure rating. They are utilized in high-pressure, high-temperature systems, complying with rigorous international standards like ASTM, ASME, and EN. With in–house heat treatment and quality assurance, Harshita Stainless guarantees our seamless pipes deliver under severe conditions. We supply all over India, catering to industries such as aerospace, power generation, and petrochemicals.
Our stainless steel pipes are available in grades 304, 316, 316L, and above alloys 321 and 904L. Made up of 18–20% chromium, 8–12% nickel, and molybdenum in 316/904L grades, they provide tensile strength between 500–750 MPa and yield strength of 200–350 MPa. Heat treatment and seamless construction provide superior mechanical homogeneity, corrosion resistance, and dimensional stability. Our pipes resist high pressure, cyclic loading, and corrosive conditions.
| 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 |
Contact us to get a quick quote for your requirement.
| SS TP 304 Seamless Pipes | Stainless TP 304L Seamless Tubing |
| ASTM A213 Stainless Welded Pipe | A249 SS TP Welded Tubes |
| ASTM A358 310S Stainless ERW Pipe | A312 SS 310 Rectangular Seamless Pipe |
| ASTM A213 316 SS Rectangular Tubes | TP 316L SS ERW Tubes |
| TP 316H Stainless Coiled Seamless Tubing | SS Heat Ex-changer Tubes |
| Stainless 317L Round Tubing | ASTM A213 317 Stainless Square Seamless Pipes |
| ASME TP Stainless Electric Fusion Welding Pipes | TP 321 SS EFW Tubing |
Yes, stainless steel seamless pipes are ideal for hygienic and sanitary applications due to their corrosion resistance, smooth surface finish, and ability to prevent contamination and bacterial growth.
Stainless steel seamless pipes are generally resistant to galvanic corrosion, especially when properly passivated. However, if in contact with more anodic metals, galvanic corrosion can occur in certain environments.
Yes, stainless steel seamless pipes are highly recyclable. They can be melted down and repurposed for new products without losing quality, making them a sustainable material option.
Yes, stainless steel seamless pipes are suitable for cryogenic applications due to their excellent toughness, strength, and resistance to brittle fracture at extremely low temperatures.
Stainless Steel Seamless Pipes find applications in hydraulic systems, gas and fuel transportation, heat exchanger tubes, medical gas supply lines, chemical plants, and power boilers. Ideal for high-integrity pipe requirements—instrument lines, superheated steam lines, and offshore drilling—the seamless pipes ensure leak-free performance under adverse conditions. Harshita Stainless distributes these pipes throughout Delhi and India to industries requiring precision, traceable quality, and reliability in safety-critical applications.
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