Stainless Steel Seamless Pipe Manufacturer & Supplier in India
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Midland Alloy is a leading manufacturer and exporter of stainless steel seamless pipes in India, serving B2B clients across domestic and international markets. We deliver high-performance piping solutions for diverse industrial applications.
Our manufacturing includes round, square, and rectangular stainless steel pipes in a wide range of sizes and wall thicknesses, suitable for oil & gas, petrochemicals, power generation, construction, and process industries.
We offer multiple surface finishes, including pickled, polished, and bright annealed, to meet functional and aesthetic requirements. All pipes are produced in compliance with ASTM, ASME, and EN standards, ensuring consistent quality and dimensional accuracy.
We supply stainless steel grades such as SS 304, 316, 310, 321, 316L, and 904L to meet varying corrosion, temperature, and pressure demands.
As a trusted SS seamless pipe supplier from India, we maintain a large inventory for quick dispatch and reliable delivery. We are an ISO 9001 certified stockist and exporter, committed to supplying superior-quality stainless steel piping solutions worldwide.
SS Seamless Pipes Overview
The pipes do not contain any welded joints or seams. They are made from only one solid piece of metal through the processes of hot extrusion or cold drawing, thus providing uniform wall thickness and consistent structural integrity throughout. Without a weld line, stainless steel seamless pipes are capable of withstanding more stress than welded pipes. In fact, they are most commonly chosen for use in high-pressure and extreme temperature environments.
In industrial environments, stainless steel pipes without seams offer a more secure and dependable option to handle corrosive situations. Since the pipe is made from a single piece, the possibility of leakage or rupture of a weld joint is completely removed. Moreover, these pipes have higher precision in their roundness and are capable of enduring much higher pressure ratings compared to the welded ones. These qualities make the pipes indispensable for highly regarded industries such as aerospace and oil and gas where the components are subjected to oxidation resistance, mechanical strength, and longevity.
Benefits of Seamless SS Pipe
Seamless pipes offer distinct mechanical advantages when it comes to critical infrastructures by their nature. Here are some of the main benefits that explain why you should opt for these pipes for your critical applications.
- High tensile strength: The pipes resist the stretching and pulling to a very high degree without breaking. The strong metal frame of the pipe guarantees that the pipe will not deformed even when it is subjected to a heavy load physically.
- Superior corrosion resistance: The high-quality alloys protect the metal from chemicals and moisture. This prevents rust and pitting, which is vital for pipes used in chemical processing plants.
- Excellent pressure handling: Since there is no welded seam the pipe is capable of handling a significantly higher internal pressure. This is why they are considered the safest means of transporting high pressure steam or gases.
- Leak-proof performance: The absence of a longitudinal weld removes the weakest point of a pipe. This solid construction ensures that fluids stay contained, preventing costly or dangerous leaks.
- Long operational life: Our pipes work for decades as it resists wear and tear. Due to its durability you wont have to replace your piping system.
- Low maintenance: Since the metal resists buildup and corrosion, these pipes require very little upkeep. This saves companies time and money on inspections and repairs.
- High temperature resistance: The material does not soften or deform when exposed to extreme heat. It maintains its structural integrity in boiler tubes and heat exchangers.
Why Choose Midland Alloys Inc. for Stainless Steel Seamless Pipe?
Stainless Steel Seamless Pipe Specifications
Stainless Steel Seamless Pipe specifications table below lists key details like pipe size, thickness (schedule), material grade, standards, and finish to guide proper selection for your application.
Seamless Pipe OD : 1/8 -12" NPS
ASTM A312 / ASME SA312
Seamless
Round, Square, Rectangular, Hydraulic Etc
Single Random, Double Random & Cut Length.
Plain End, Beveled End, Treaded
SCH5, SCH10, SCH20, SCH30, SCH40, STD, SCH80, SCH 80S, SCH60, SCH80, SCH120, SCH140, SCH160, SCH XXS, SCH XS
Bright, Polish, and Black
Types of Stainless Steel Pipes
Stainless Steel Seamless Pipe come in different types based on how they’re made and shaped. Each type fits specific production needs and design setups.
Pipe Forms
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Round Seamless PipesThis is the standard shape used for most fluid and gas transport. They provide the most efficient flow for industrial systems.
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Square Seamless PipesOften used for structural support in corrosive areas. Their shape makes them easy to weld into frames and equipment.
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Rectangular Seamless PipesThese are common in architectural and mechanical applications. They offer high strength for specialized construction projects.
Contact us today to discuss how Stainless Steel Seamless Pipe can benefit your application. Whether you need guidance in selecting the right pipes or have specific requirements, our team of experts is here to help you find the optimal solution.
Stainless Steel Seamless Pipe Grades We Offer
Stainless Steel Seamless Pipe Dimensions
| Stainless Steel OD mm | Pipe WT mm | in. | Sch | Kg/m |
| 13.72 | 1.65 | 1/4 | 10S | 0.50 |
| 13.72 | 2.24 | 1/4 | 40S | 0.64 |
| 13.72 | 3.02 | 1/4 | 80S | 0.81 |
| 17.15 | 1.65 | 3/8 | 10S | 0.64 |
| 17.15 | 2.31 | 3/8 | 40S | 0.86 |
| 17.15 | 3.20 | 3/8 | 80S | 1.12 |
| 21.34 | 2.11 | 1/2 | 10S | 1.02 |
| 21.34 | 2.77 | 1/2 | 40S | 1.29 |
| 21.34 | 3.73 | 1/2 | 80S | 1.65 |
| 26.67 | 2.11 | 3/4 | 10S | 1.30 |
| 26.67 | 2.87 | 3/4 | 40S | 1.71 |
| 26.67 | 3.91 | 3/4 | 80S | 2.23 |
| 33.40 | 2.77 | 1 | 10S | 2.13 |
| 33.40 | 3.38 | 1 | 40S | 2.54 |
| 33.40 | 4.55 | 1 | 80S | 3.29 |
| 33.40 | 6.35 | 1 | 160 | 4.30 |
| 42.16 | 2.77 | 1¼ | 10S | 2.73 |
| 42.16 | 3.56 | 1¼ | 40S | 3.44 |
| 42.16 | 4.85 | 1¼ | 80S | 4.53 |
| 42.16 | 6.35 | 1¼ | 160 | 5.69 |
| 48.26 | 2.77 | 1½ | 10S | 3.16 |
| 48.26 | 3.68 | 1½ | 40S | 4.11 |
| 48.26 | 5.08 | 1½ | 80S | 5.49 |
| 60.33 | 2.77 | 2 | 10S | 3.99 |
| 60.33 | 3.91 | 2 | 40S | 5.52 |
| 60.33 | 5.54 | 2 | 80S | 7.60 |
| 60.33 | 8.74 | 2 | 160 | 11.29 |
| 73.03 | 3.05 | 2½ | 10S | 5.35 |
| 73.03 | 5.16 | 2½ | 40S | 8.77 |
| 73.03 | 7.01 | 2½ | 80S | 11.59 |
| 88.90 | 3.05 | 3 | 10S | 6.56 |
| 88.90 | 5.49 | 3 | 40S | 11.47 |
| 88.90 | 7.62 | 3 | 80S | 15.51 |
| 88.90 | 11.13 | 3 | 160 | 21.67 |
| 101.60 | 3.05 | 3½ | 10S | 7.53 |
| 101.60 | 5.74 | 3½ | 40S | 13.78 |
| 101.60 | 8.08 | 3½ | 80S | 18.92 |
| 114.30 | 3.05 | 4 | 10S | 8.50 |
| 114.30 | 6.02 | 4 | 40S | 16.32 |
| 114.30 | 8.56 | 4 | 80S | 22.67 |
| 114.30 | 13.49 | 4 | 160 | 34.05 |
| 141.30 | 6.55 | 5 | 40S | 22.10 |
| 141.30 | 9.53 | 5 | 80S | 31.44 |
| 141.30 | 15.88 | 5 | 160 | 49.87 |
| 168.28 | 3.40 | 6 | 10S | 14.04 |
| 168.28 | 7.11 | 6 | 40S | 28.69 |
| 168.28 | 10.97 | 6 | 80S | 43.21 |
| 168.28 | 14.27 | 6 | 120 | 54.75 |
| 168.28 | 18.26 | 6 | 160 | 68.59 |
| 219.08 | 8.18 | 8 | 40S | 43.20 |
| 219.08 | 12.70 | 8 | 80S | 65.63 |
| 219.08 | 18.23 | 8 | 120 | 91.30 |
| 219.08 | 23.01 | 8 | 160 | 112.97 |
Stainless Steel Thickness Chart
| Nominal size [inches] | Outside diameter [inches] | Outside diameter [mm] | Wall thickness [inches] | Wall thickness [mm] | Weight [lb/ft] | Weight [kg/m] |
| 1/8 | 0.405 | 10.3 | 0.095 | 2.41 | 0.31 | 0.47 |
| 1/4 | 0.54 | 13.7 | 0.119 | 3.02 | 0.54 | 0.8 |
| 1/2 | 0.84 | 21.3 | 0.147 | 3.73 | 1.09 | 1.62 |
| 3/4 | 1.05 | 26.7 | 0.154 | 3.91 | 1.47 | 2.2 |
| 1 | 1.315 | 33.4 | 0.179 | 4.55 | 2.17 | 3.24 |
| 1 1/4 | 1.66 | 42.2 | 0.191 | 4.85 | 3 | 4.47 |
| 1 1/2 | 1.9 | 48.3 | 0.2 | 5.08 | 3.63 | 5.41 |
| 2 | 2.375 | 60.3 | 0.218 | 5.54 | 5.02 | 7.48 |
| 2 1/2 | 2.875 | 73 | 0.276 | 7.01 | 7.66 | 11.41 |
| 3 | 3.5 | 88.9 | 0.3 | 7.62 | 10.25 | 15.27 |
| 3 1/2 | 4 | 101.6 | 0.318 | 8.08 | 12.5 | 18.63 |
| 4 | 4.5 | 114.3 | 0.337 | 8.56 | 14.98 | 22.32 |
| 5 | 5.563 | 141.3 | 0.375 | 9.53 | 20.78 | 30.97 |
| 6 | 6.625 | 168.3 | 0.432 | 10.97 | 28.57 | 42.56 |
| 8 | 8.625 | 219.1 | 0.5 | 12.7 | 43.39 | 64.64 |
| 10 | 10.75 | 273 | 0.594 | 15.09 | 64.43 | 96.01 |
| 12 | 12.75 | 323.8 | 0.688 | 17.48 | 88.63 | 132.08 |
| 14 | 14 | 355.6 | 0.75 | 19.05 | 106.13 | 158.1 |
| 16 | 16 | 406.4 | 0.844 | 21.44 | 136.61 | 203.53 |
| 18 | 18 | 457 | 0.938 | 23.83 | 170.92 | 254.55 |
| 20 | 20 | 508 | 1.031 | 26.19 | 208.87 | 311.17 |
| 24 | 24 | 610 | 1.125 | 30.96 | 296.58 | 442.08 |
How Stainless Steel Seamless Pipe Are Manufactured
Round Bar
Analytic
Cut to Length
Centering
Heating
Perforation
Inspection of Size
Pickling
Inspection of Surface
Lubricating
Cold Drawing (Cold Rolling)
Degreasing
Annealing
Straightening
Cut
Pickling / Passivating
Inspection
Analytic
Marking
Packing & Shipping
Applications of Stainless Steel Seamless Pipe
Stainless Steel Seamless Pipe play a key role in many industries due to their strength, clean finish, and corrosion resistance. In the automotive industry, these pipes help build fuel lines, exhaust systems, and engine parts that can handle high heat and pressure. In the pharmaceutical industry, their smooth, non-reactive surface makes them ideal for cleanrooms and sterile processing lines. The food and beverage industry uses ss pipes in everything from milk processing to beer brewing, where hygiene and rust-free performance are essential. In the chemical and petrochemical industry, these pipes carry harsh fluids and gases without wearing out or leaking. In construction and architecture, stainless pipes support building structures, handrails, and drainage systems while also adding a sleek look.
FAQs
Our seamless pipes are manufactured with a solid piece of metal and does not have any seams. This makes them strong and better for high pressure applications. A flat stip is rolled and joined to make welded pipes. Our seamless pipes are more affordable for low pressure use.
Yes, we offer custom diameter and wall thickness for your particular industrial need. Contact our team with your specific dimensions and we will manufacture them according to your needs.
We ship our products to clients all over the world. We handle all export documentation and use professional packaging to ensure your order arrives safely at your site.
