Stainless Steel 310/310S Pipes Manufacturer & Supplier
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Midland Alloys Inc. is a renowned manufacturer and supplier of Stainless Steel 310/310S Pipes that meet high temperature and oxidation resistant service. Austenitic stainless steel grades 310 and 310S provide better performance in heat-exposed and scaling and corrosion environments. SS 310 possesses improved chromium and nickel contents to ensure oxidation resistance up to 1100°C, while SS 310S has reduced carbon for improved weldability and less carbide precipitation.
We provide SS 310/310S Pipes in seamless and welded conditions with diameter range from 6 mm to 600 mm OD and thickness up to 20 mm as per ASTM A312 and other international standards. All the pipes are subject to stringent quality inspection on ISO 9001:2015 standards, such as hydro test, dimensional checking and material traceability. As a trusted SS 310S Pipe supplier and SS 310/310S pipe supplier in India, we provide global delivery and technical assistance. We provide availability in different 310S stainless steel pipe sizes to suit different industrial requirements.
Product Introduction – SS 310/310S Pipes
Stainless Steel 310 and 310S Pipes are high-temperature austenitic chromium-nickel stainless steel designed for applications in high-temperature and oxidation-susceptible conditions. Their chemistry provides very good strength, thermal stability, and resistance to surface scaling, even at extended exposure temperatures up to 1100–1150°C.
Heat Resistance & Performance Capabilities of Stainless Steel 310/310S Pipes
Choosing the right stainless steel grade depends on operating temperature, weldability, corrosion behaviour, and material strength. SS 310 Pipes and SS 310S Pipes are often compared to other stainless steels based on these performance factors.
When comparing SS 310 vs Stainless Steel 304 Pipes, 310 offers significantly better thermal resistance and scaling durability, especially above 1000°C. In contrast, SS 304 is more cost-effective and sufficient for general industrial service at moderate temperatures.
SS 310S Pipes perform better than SS 316L Pipes in high-temperature environments, where 316L may suffer from scaling or loss of mechanical integrity. However, SS 316L excels in highly corrosive, chloride-rich environments due to its molybdenum-enhanced corrosion resistance.
Between SS 310 and Stainless Steel 321 Pipe, both provide heat resistance, but 310 withstands oxidation at higher temperatures. Meanwhile, SS 321 uses titanium stabilisation to resist weld decay during thermal cycling and fabrication.
Compared to Duplex 2205 Pipe, SS 310 lacks the high tensile strength and general corrosion resistance that Duplex offers. However, in extreme heat cycles and continuous high-temperature exposure, SS 310 Pipes remain more thermally stable.
In simple terms, SS 310 has higher carbon content, which increases strength in hot service. SS 310S is perfect for welded constructions in heat-intensive applications because of its lower carbon content which increases weldability and lowers the possibility of carbide precipitation.
Technical Specifications of Stainless Steel 310/310S Pipes
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, A358 / ASME SA312, SA358
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
No. 2B - Mill finish/ Matte finish, No.8 - Mirror finish, No. 4 - Brushed finish, Bright, Annealing, Polished, Mirror
Types of Stainless Steel 310/310S Pipes
Manufacturing Types
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Seamless PipeWeld-free, perfect for even strength and sizing precision.
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Welded PipeWelded from flat-rolled steel, widely used where economy and large sizes are required.
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ERW PipeElectric Resistance Welded (ERW) pipes provide neat, high quality weld seams and are ideal for medium-pressure applications.
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EFW PipeElectric Fusion Welded (EFW) pipes are welded by fusion welding, usually applied in larger diameters and high-demand processes.
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LSAWLongitudinal Submerged Arc Welded (LSAW) pipes provide straight seam welding which is favored for thick-wall pieces and structural requirements.
Pipe Forms
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Round PipeThe most common shape for fluid and gas transport.
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Square PipeUsed in architectural and structural applications requiring angular profiles.
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Rectangular PipeProvides greater strength in load-bearing regions and flat structures.
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Hydraulic PipeDesigned to provide precise dimensional control for fluid systems under pressure.
Contact us today to discuss how Stainless Steel 310/310S 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.
Technical Details & Delivery Condition
Chromium nickel austenitic stainless steels SS 310 and 310S are known for their ability to withstand corrosion in oxidizing conditions and their strength at elevated temperatures. Excellent thermal stability is provided by the balanced chemical composition of SS 310 while 310S’s lower carbon content improves weldability and lowers the possibility of sensitization during fabrication. According to ASTM A312 TP310 composition standards both grades are within the necessary bounds.
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N |
| SS 310 (min.) | – | – | – | – | – | 24.0 | – | 19.0 | – |
| SS 310 (max.) | 0.25 | 2.0 | 1.50 | 0.045 | 0.030 | 26.0 | – | 22.0 | – |
These 310S material elements ensure the grade performs reliably in high-temperature service, especially where welding and long exposure to heat are required.
SS 310 and 310S exhibit strong mechanical performance under high thermal stress, making them suitable for extreme heat applications. These grades meet ASTM A312 / A213 requirements and provide good tensile strength, consistent yield strength, and moderate elongation. In order to preserve structural integrity over extended exposure, these SS 310 mechanical properties must be consistent.
| Grade | Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) min | Hardness Rockwell B (HR B) max | Hardness Brinell (HB) max |
| 310 – 310S | 515 | 205 | 40 | 95 | 217 |
These mechanical figures ensure the pipe’s durability and reliability in continuous high-temperature service.
Even under high-temperature operating conditions stainless steel 310/310S pipes exhibit consistent thermal and physical characteristics. It is dependable for thermal process systems and structural framework because of these qualities. The following values are general engineering references and may differ slightly depending on the batch of material.
| Grade | Density (kg/m³) | Elastic Modulus (GPa) | Mean Coefficient of Thermal Expansion 0-1000°C (m/m/°C) | Mean Coefficient of Thermal Expansion 0-3150°C (m/m/°C) | Mean Coefficient of Thermal Expansion 0-5380°C (m/m/°C) | Thermal Conductivity at 1000°C (W/m·K) | Thermal Conductivity at 5000°C (W/m·K) | Specific Heat 0-1000°C (J/kg·K) | Electrical Resistivity (n·m) |
| 310 – 310S | 7750 | 200 | 15.9 | 16.2 | 17.0 | 14.2 | 18.7 | 500 | 720 |
These thermal properties of SS 310 support stability under thermal cycling, making the material dependable for prolonged exposure to elevated heat.
SS 310 and SS 310S are internationally recognised under various standards and material designations. Comprehending the equivalent grades of SS 310 facilitates the alignment of project requirements with regional specifications, as well as the assurance of material compatibility, global sourcing flexibility, and standardized quality compliance. SS 310 is assigned UNS S31000, and the 310S UNS number is S31008. These grades match comparable materials in Japanese, European, and other international systems. For example, Stainless Steel 310 vs EN 1.4841 shows a match in chemical and thermal properties.
Below is a helpful global grade comparison for 310/310S.
| Grade | UNS No | Old British BS | Old British En | Euronorm No | Euronorm Name | Swedish SS | Japanese JIS |
| 310 – 310S | S31000/S31008 | – | – | 1.4841/1.4845 | – | – | SUS 310 – 310S |
This table supports seamless cross-referencing when selecting or substituting materials for international projects or procurement.
Product Forms & Dimensional Range
Stainless Steel 310/310S pipes are offered in multiple form factors to accommodate a variety of system designs and engineering layouts. Each form complies with established dimensional tolerances based on standardised manufacturing practices. Manufacturing forms include seamless, welded, ERW, and EFW, with precise production control to ensure consistent geometry and wall accuracy. In terms of shape, round is the standard configuration, while square and rectangular options are available on request for specific structural requirements. SS 310 pipe’s dimensional range supports a wide range of flow capacities and system scales with nominal bore (NB) sizes ranging from ½” NB to 24″ NB. To accommodate different connection methods, pipe ends are available in standard 310S pipe end types like Plain End (PE), Bevelled End (BE), and Threaded End (TE).
For length configurations, buyers can choose from Single Random Length (SRL), Double Random Length (DRL), or custom-cut 310 pipe length options as per project requirements.
Stainless Steel Pipe Grades We Offer
Stainless Steel 310/310S 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 310/310S 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 |
SS 310/310S Pipe Price per Kg in India
The pipe type (welded or seamless), wall thickness, nominal bore size and quantity ordered all affect the price of SS 310 pipe per kilogram. Because of its superior mechanical qualities and more complex manufacturing process stainless steel 310 seamless pipe typically costs more.
Other pricing variables include the pipe form (round, square, or rectangular), the selected schedule, and current raw material costs—particularly fluctuations in nickel and chromium rates. As of recent market analysis, the 310/310S pipe rate in India typically ranges from ₹450 to ₹700 per kg, depending on the exact specifications.
We encourage direct inquiry for the most up-to-date and accurate price of SS 310 pipe particularly for custom cut lengths, export quantities or bulk orders. All rates provide complete support for both domestic and international delivery requirements and are updated on a regular basis to conform to global quality standards.
How Stainless Steel 310/310S Pipes Are Manufactured
Both seamless and welded manufacturing techniques are used in the making of stainless steel 310 pipes to satisfy the performance requirements of environments that are prone to corrosion and high temperatures. In order to achieve mechanical stability and dimensional accuracy, seamless 310/310S pipes are made by hot piercing solid round billets, then rolling, sizing and applying a controlled heat treatment. Welded pipes are made by forming stainless steel strips into cylindrical shapes and joining them through Electric Resistance Welding (ERW) or Electric Fusion Welding (EFW). The resulting weld seam is heat-treated to restore corrosion resistance and improve grain structure. Annealing, acid pickling, and optional surface finishing procedures like polishing or passivation are applied to both seamless and welded forms. This guarantees a smooth, consistent surface finish, and improves durability. All pipes conform to globally recognised specifications such as ASTM A312, ASTM A213, and ASTM A249, ensuring consistency in mechanical properties, dimensional tolerances, and surface quality. Final products are fully inspected and tested before dispatch to meet critical application standards.
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 and Uses of Stainless Steel 310/310S Pipes
Midland Alloys is a reliable supplier of SS 310/310S ready stock, keeping a steady stock to quickly meet bulk, and urgent project needs. With options for custom-length orders and quick dispatch, our in stock 310 stainless steel pipes come in a variety of sizes and shapes guaranteeing every shipment has a short lead time. We support fast stainless steel pipe delivery across India as well as streamlined global distribution. Midland Alloys is a recognised stainless pipe exporter to UAE, Saudi Arabia, and Oman, with reliable reach across key Gulf markets. Our export presence also extends to Europe (Germany, Italy, UK) and Asia (Singapore, Malaysia), supported by an efficient supply chain network. All international deliveries are supported by secure packaging, appropriate export documentation, and adherence to destination specific laws. Air freight, sea cargo and road transport are among the shipping options we provide, depending on location and urgency, to guarantee fast arrival within the 310S pipe worldwide delivery window.
SS 310/310S pipes undergo rigorous testing as part of globally recognised quality control systems. All inspections are carried out under strict compliance with ISO 9001:2015 and PED 2014/68/EU directives to ensure reliability, safety, and traceability. Quality checks include non-destructive testing such as ultrasonic (UT), radiographic (RT), magnetic particle inspection (MPI), and hydrostatic testing, which assess internal flaws and pressure integrity. Mechanical testing, in accordance with ASTM A312 and other relevant material standards, includes tensile strength, bend, hardness, and flattening tests for performance validation. Optical Emission Spectroscopy (OES) or Positive Material Identification (PMI) are used to verify chemical accuracy by comparing elemental composition to the necessary specifications. A Mill Test Certificate (MTC) issued in accordance with EN 10204 3.1 or 3.2 format is included with every batch.
To further confirm adherence to project-critical requirements, third-party inspections from organizations such as TÜV, SGS, DNV or Lloyd’s Register can be scheduled upon request.
Why Choose Midland Alloys Inc. for SS 310/310S Pipes
Frequently Asked Questions About SS 310/310S Pipes
Stainless Steel 310/310S pipes offer excellent heat resistance, withstanding continuous service up to 1,100°C–1,150°C, depending on atmosphere and pressure conditions. This makes them ideal for thermal and high-temperature processing lines.
Yes. SS 310S has a lower carbon content than standard 310, enhancing weldability and minimising the risk of carbide precipitation or sensitisation during high-heat welding processes.
Absolutely. These grades are engineered as high-temperature stainless steels, widely used in furnace components, radiant tubes, and flare stacks, where SS 304 or SS 316 may fail under prolonged thermal stress.
They are manufactured in compliance with ASTM A312, A213, and A249, and meet international quality benchmarks such as ISO 9001:2015 and PED 2014/68/EU for pressure equipment.
As of current trends, the SS 310/310S pipe price in India ranges between ₹450 to ₹700 per kg, depending on size, type (seamless or welded), and order volume. Contact us for updated or bulk pricing.
