Stainless Steel Pipes Manufacturer & Supplier
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Midland Alloys Inc. is a leading stainless steel pipes manufacturer in India and a global supplier of stainless steel pipes that are quality-driven, and reliable. Stainless steel 304 pipes, stainless steel 316 pipes, and stainless steel 321 pipes are among the most adaptable and commonly used products in the metal industry. We also offer specific grades, such as Stainless Steel 253MA Pipes and SMO 254 Pipes, intended for strength, and performance. Our pipes are notable for their corrosion resistance, durability, and weldability and fabricability. It is extensively used in the oil & gas, chemical, food, pharma and construction industries. We provide seamless and welded stainless steel pipes in various sizes and schedules. All of our products have ASTM A312 and ISO 9001:2015 certification. For additional technical information, prices, and characteristics, see below.
Stainless Steel Pipe Overview
Stainless steel pipe is a corrosion-resistant alloy pipe made from iron, chromium (18–20%), nickel (8–10.5%), and small amounts of manganese, silicon, and carbon. It belongs to the austenitic stainless steel family, known for its strength, longevity, and resistance to rust. This mix of metals helps the pipe hold up well in air, chemicals, and mild acids. That makes it useful in harsh settings without damage. Common manufacturing standards include ASTM A312 stainless steel pipe and ASTM A269, ensuring top quality and performance. We supply pipes in seamless, welded, and ERW forms, in round, square, and rectangular shapes. These pipes serve key industries like oil & gas, pharmaceuticals, chemicals, food processing, and construction.
Benefits of Stainless Steel Pipes
- Corrosion Resistance: These pipes don’t rust easily, even in humid, chemical, or salty conditions.
- Strength and Sturdiness: They handle high pressure, heat, and mechanical stress without bending or breaking.
- Low Maintenance: They don’t need painting or coatings. Regular cleaning keeps them in good shape.
- Hygienic Surface: The smooth, non-porous finish prevents dirt and bacteria buildup—great for food and pharma use.
- Neat and Polished Look: Their clean finish makes them ideal for visible areas in buildings and equipment.
- Weldable and Easy to Fabricate: You can cut, bend, or weld them easily without losing strength or quality.
- Eco-Friendly: Made from recyclable material and safe for the environment.
- Long Service Life: With proper use, they last for years without thinning, cracking, or failing.
Stainless Steel Pipe Specifications
Seamless Pipe OD : 1/8 -12" NPS
Welded Pipe OD : 6.35 to 114.3 mm
EFW Pipe Size : 6″ NB – 24″ NB
ASTM A312 / ASME SA312
Seamless, ERW, Welded, Fabricated
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 pipes come in different types based on how they’re made and shaped. Each type fits specific production needs and design setups.
Manufacturing Types
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Seamless PipeManufactured without any welds, these pipes offer uniform strength and smooth internal surfaces. Ideal for high-pressure and high-temperature use.
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Welded PipeMade by rolling and welding stainless steel strips, they’re reliable, affordable, and commonly used in structural and low-pressure applications.
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ERW (Electric Resistance Welded) PipeCreated by using high-frequency electric resistance to join the edges. These pipes have clean welds and are best suited for light to medium-duty tasks.
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EFW (Electric Fusion Welded) PipeProduced using an electric arc or beam for fusion welding. Typically used for large-diameter pipes in high-temperature or corrosive environments.
Pipe Forms
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Round PipeThe most common shape, round pipes are ideal for transporting fluids and gases due to smooth flow paths.
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Square PipeThese have equal sides and are mainly used in frames, supports, and architectural structures needing symmetry and strength.
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Rectangular PipeWith longer sides on one axis, these pipes offer strength while fitting tight or flat spaces efficiently.
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Hydraulic PipeHollow, multi-sided sections that provide superior load-bearing capacity in structural and fabrication projects.
Contact us today to discuss how Stainless Steel Pipes 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 Pipe Grades We Offer
Stainless Steel 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 SMO 254 Pipes 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 Pipes
Frequently Asked Questions About Stainless Steel Pipes
Seamless pipes are manufactured without any welds, offering uniform strength and better performance in high-pressure and high-temperature environments. Welded pipes, on the other hand, are more cost-effective and suitable for structural or low-pressure applications.
Yes, stainless steel pipes are engineered to withstand high temperatures, especially grades like 321 and 347, which are stabilized for high-heat service.
We offer various surface finishes such as polished, annealed, pickled, and mirror finish, depending on application requirements and aesthetic preferences.
Yes, stainless steel is 100% recyclable, making it an eco-friendly option for construction and manufacturing. It also contributes to sustainable building practices.
