ASTM A312 TP 310 Welded Pipe Specification

This TP 310 welded pipe specification table summarises essential specifications including standard, sizes and other required information.

Attribute Details
Standard ASTM A312 / ASME SA-312
Size (ERW) 1/2″ to 24″ NPS
Size (EFW) 6″ to 100″ NPS
Wall Thickness 0.8 mm to 12.7 mm
Schedule SCH 5S, 10S, 40, 80, 160, XXS
Length Single Random (5–7 m), Double Random (9–12 m), Cut Length
Finish 2B, No.1, No.4, No.8 Mirror, Annealed & Pickled, Bright Annealed

Stainless Steel 310 Welded Pipe Sizes

SS 310 welded pipe is stocked from 1/2″ to 24″ NPS in ERW form and 6″ to 100″ NPS in EFW form. Standard lengths are single random (5 to 7 metres) and double random (9 to 12 metres); cut-to-length is available as per client specifications.

SS 310 Welded Pipe Size Chart

Common NPS sizes with outside diameter and wall thickness per schedule:

NPS OD (mm) OD (in) SCH 10S WT (mm) SCH 40 WT (mm) SCH 80 WT (mm)
1/2" 21.3 0.840 2.11 2.77 3.73
1" 33.4 1.315 2.77 3.38 4.55
2" 60.3 2.375 2.77 3.91 5.54
4" 114.3 4.500 2.77 6.02 8.56
6" 168.3 6.625 2.77 7.11 10.97
8" 219.1 8.625 2.77 8.18 12.70
12" 323.8 12.750 3.96 10.31 12.70

SS 310 Welded Pipe Weight Chart

Weight per metre by NPS and schedule for SS 310 welded pipe:

NPS SCH 10S (kg/m) SCH 40 (kg/m) SCH 80 (kg/m)
1/2" 1.00 1.27 1.62
1" 2.09 2.50 3.24
2" 3.93 5.44 7.48
4" 7.63 16.07 22.32
6" 11.32 28.26 42.56
8" 14.78 42.55 64.64
12" 31.25 79.73 97.44

Stainless Steel 310 Welded Pipe Price

The stainless steel 310 welded pipe price in India ranges from ₹425 to ₹900 per kg, and the price in international markets per kg is around $3-$16 per kg, depending on OD, wall thickness, schedule, quantity, surface finish, and current nickel/chromium market rates. TP 310S variants and bright annealed finishes carry a premium. Contact Sachiya Steel International for a current quote.

Chemical Composition of Stainless Steel 310 Welded Pipe

Chemical composition of welded pipe made of stainless steel 310 according to ASTM A312 and ASME SA-312 (UNS S31000) has been given below.

This 310 welded pipe contains 24-26% chromium and 19-22% nickel. These high levels provide exceptional oxidation resistance and structural stability for extreme high-temperature industrial environments, outperforming standard 304 and 316 stainless steel grades.

Carbon C
Max 0.25%
Manganese Mn
Max 2.00%
Phosphorus P
Max 0.045%
Sulfur S
Max 0.030%
Silicon Si
Max 1.50%
Chromium Cr
24.0 – 26.0%
Nickel Ni
19.0 – 22.0%

Mechanical Properties of Stainless Steel 310 Welded Pipe

For Grade TP 310 welded pipe, the following are the minimum specifications required by ASTM A312 and ASME SA-312

Values apply to annealed condition pipe. The 35% minimum elongation confirms the pipe can withstand forming and bending without cracking.

515
MPa (min)
Tensile Strength
205
MPa (min)
Yield Strength
35%
(min)
Elongation
Property Value
Tensile Strength (min) 75 ksi (515 MPa)
Yield Strength, 0.2% Offset (min) 30 ksi (205 MPa)
Elongation (min) 35%
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Equivalent Grades of Stainless Steel 310 Welded Pipe

SS 310 welded pipe is the subject of numerous international designations, as evidenced by the accompanying list.

Standard Designation
UNS S31000
European (EN) X15CrNiSi25-21 / 1.4845
Japanese (JIS) SUS 310
Chinese (GB) 06Cr25Ni20Si2
Trade Name Alloy 310 / Inox 310

Stainless Steel 310 Welded Pipe Applications

SS 310 welded pipe serves 3 primary sectors where oxidation resistance above 1800°F (982°C) is required.

Heat Treatment and Furnace Industry

310 pipes are standard for furnace components, radiant tubes, and kiln internals operating at 2000°F.

Chemical Processing and Refining

Used in cracking units, flare stacks, and acid recovery systems for high-temperature oxidation resistance.

Power Generation

Necessary for coal or waste-to-energy facilities' boiler superheaters and steam pipes when they are under thermal loads.

Stainless Steel 310 Welded Pipe vs 310 Seamless Pipe

ERW SS 310 welded pipe is more affordable than seamless pipe in diameters above 4″ NPS and available up to 24″ NPS. Pressure capability shall be determined as per ASME B31.3/B31.1 based on design conditions. Seamless pipe is typically preferred for critical high-pressure or high-integrity services.

Feature SS 310 Welded Pipe SS 310 Seamless Pipe
Manufacturing From cold-rolled strip or plate From solid round billets
Size Availability Up to 100" (EFW) Generally up to 24" NPS
Cost More economical (especially large OD) Higher due to a complex process
Pressure Rating 20% lower (unless 100% X-rayed) Higher (No longitudinal weld)
Wall Uniformity Excellent thickness consistency Potential for slight eccentricity
Best Application Low-pressure ducting, exhausts High-pressure boilers, gas lines

Shipping & Packaging

Main export packaging setup Heavy-duty wooden boxes Packing
Export Packaging Standard

We strictly follow seaworthy export handling standards to protect 310 welded pipe from transit damage, moisture ingress, and surface contamination during long-distance dispatch.

  • Heavy-duty wooden boxes with moisture barrier lining
  • HDPE stretch film wrapping on all bundles
  • Plastic end caps on threaded and plain-end pipes
  • Silica gel desiccants to minimize moisture exposure
  • ISPM-15 fumigated wooden packaging for export
Bundle Yard Staging Pipe Bundle Yard Staging
Bundle Edge Protection Container End-Cap Protection
Export-Ready Bundles Wrapped Export-Ready Bundles

We Export Worldwide

Sachiya Steel International supplies stainless steel products to major industrial markets across North America, Europe, the Middle East, Asia and Africa with export-ready documentation and logistics support.

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Frequently Asked Questions:

What Sizes are Available for SS 310 Welded Pipe? +
SS 310 welded pipe is available from 1/2″ to 24″ NPS in ERW form and 6″ to 100″ NPS in EFW form, across schedules 5S, 10S, 40, 80, and 160.
What is the Price of Stainless Steel 310 Welded Pipe per Kg? +
Price ranges from ₹425 to ₹900 per kg in India, depending on OD, wall thickness, schedule, quantity, and finish.
What is the Maximum Service Temperature for SS 310 Welded Pipe? +
SS 310 welded pipe handles continuous service up to 2000°F (1093°C) and intermittent service up to 1900°F (1038°C).
What is the Difference between SS 310 Welded Pipe and SS 310 Seamless Pipe? +
SS 310 welded pipe is formed from a flat strip and joined by a longitudinal weld seam, making it more cost-effective in larger diameters. Seamless pipe has no weld seam and is preferred for high-pressure, critical-service lines.
What ASTM Specification covers SS 310 Welded Pipe? +
Three specifications apply: ASTM A312 / ASME SA-312 for standard welded pipe, ASTM A358 for EFW pipe, and ASTM A778 for welded unannealed products.
What is the Weight of SS 310 Welded Pipe per Metre? +
Weight varies by size and schedule. A 2″ NPS Schedule 40 pipe weighs approximately 5.44 kg/m. Refer to the weight chart above for other sizes.
Can SS 310 Welded Pipe Be Used for Cryogenic Applications? +
310 stainless steel retains excellent impact toughness at cryogenic temperatures down to -450°F (-268°C). Its low magnetic permeability also makes it suitable for specific cryogenic piping installations.
How to Weld SS 310 Pipe? +
SS 310 pipe is welded using AWS E310-15 electrodes or ER310 filler wire. Weldability is comparable to 304/304L. Post-weld heat treatment isn’t typically required.

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