ASTM A312 TP310 Stainless Steel Pipe
Type: Seamless Pipe
Process: Cold-rolled
Standard: ASTM A312 / ASME SA312
Shape: Round, Square, Rectangular
Surface: Mechanically Polished
Outer Diameter: 6.0–200 mm
Wall Thickness: 0.3–20 mm
Length: Customizable
End Finish: Plain End, Beveled End, Threaded End
ASTM A312 TP310 Stainless Steel Pipe Manufacturer
Gnee specializes in the supply of austenitic stainless steel products, integrating production, processing, warehousing, and cross-border export. Since our inception, we have adhered to the business philosophy of "Quality First, Customer Foremost, and Integrity-Based," striving to meet the evolving needs of our customers.
Our 310 stainless steel pipes contain 25% chromium and 20% nickel, providing exceptional corrosion and oxidation resistance under various stress conditions. Additionally, SS 310 pipes exhibit excellent mechanical properties at elevated temperatures, remaining functional at temperatures up to 1150°C.
Our ASTM A312 TP310 seamless pipes are manufactured using an extrusion process, making them suitable for non-pressure-bearing systems. Featuring a seamless surface, they undergo solution annealing-or heat treatment and quenching within the 1040°C to 1065°C range-to achieve a minimum tensile strength of 520 MPa and a minimum yield strength of 205 MPa, with elongation easily reaching 40%. They maintain outstanding strength and load-bearing capacity even in harsh environmental conditions.
ASTM A312 TP310 round pipe
ASTM A312 TP310 Polished ss tube
ASTM A312 TP310 seamless tube
Stainless Steel ASTM A312 TP310 Pipe Specification
Chemical composition
| element | TP310(UNS S31000) | TP310S(UNS S31008) | TP310H(UNS S31009) |
| C | ≤0.15 | ≤0.08 | 0.04 ~ 0.10 |
| Mn | ≤2.00 | ≤2.00 | ≤2.00 |
| Si | ≤1.00 | ≤1.00 | ≤1.00 |
| P | ≤0.045 | ≤0.045 | ≤0.045 |
| S | ≤0.030 | ≤0.030 | ≤0.030 |
| Cr | 24.0 ~ 26.0 | 24.0 ~ 26.0 | 24.0 ~ 26.0 |
| Ni | 19.0 ~ 22.0 | 19.0 ~ 22.0 | 19.0 ~ 22.0 |
| Mo | ≤0.75 | ≤0.75 | ≤0.75 |
Mechanical Properties of ASTM A312 TP310 SS Pipe
|
Mechanical Properties |
310 |
|
Grade 0.2 % Proof Stress MPa (min) |
205 |
|
Tensile Strength MPa (min) |
520 |
|
Elongation % (min) |
40 |
|
Hardness (HV) (max) |
225 |
Physical Properties of ASTM A312 TP310 SS Pipe
|
Properties |
at |
Value |
Unit |
|
Density |
8,000 |
Kg/m3 |
|
|
Electrical Conductivity |
25°C |
1.25 |
%IACS |
|
Electrical Resistivity |
25°C |
0.78 |
Micro ohm.m |
|
Modulus of Elasticity |
20°C |
200 |
GPa |
|
Poisson's Ratio |
20°C |
0.30 |
|
|
Specific Heat |
500 |
J/kg.°C |
|
|
Thermal Conductivity |
100°C |
14.2 |
W/m.°C |
Dimensional tolerance
Outer diameter tolerance
| NPS Scope | DN range | Outer Diameter Tolerance (mm) | inch tolerance |
|
NPS 1/8" ~ 1-1/2" |
DN6~DN40(OD 10.3~48.3mm) |
±0.4 |
±1/64" |
|
NPS 2" ~ 4" |
DN50~DN100(OD 48.3~114.3mm) |
±0.8 |
±1/32" |
|
NPS 5" ~ 8" |
DN125~DN200 |
±1.6 |
±1/16" |
| NPS ≥ 10" Large-diameter | DN250 and above |
±2.4 |
±3/32" |
Wall thickness tolerance
| Pipe NPS | T/D ratio | Positive upper limit of tolerance | Lower limit of negative tolerance |
|
NPS 1/8 ~ 2-1/2" |
All ratios |
+20% |
-12.5% |
|
NPS 3 ~ 18" |
t/D ≤5% |
+22.5% |
-12.5% |
|
NPS 3 ~ 18" |
t/D ＞5% |
+15% |
-12.5% |
|
NPS≥20" Large-diameter seamless |
t/D ≤5% |
+22.5% |
-12.5% |
|
NPS≥20" Large-diameter seamless |
t/D ＞5% |
+15% |
-12.5% |
Comparison of TP310 and TP317L
| Operating condition |
select P310 |
select TP317L |
| Long-term high-temperature exposure (>600°C), incineration, and industrial furnaces/kilns. |
✅Top choice |
❌The maximum temperature limit is only 450°C. |
| Corrosion resistance against seawater, chloride ions, and acids/alkalis at ambient temperature. |
❌Susceptible to pitting perforation |
✅High-molybdenum, chloride-resistant |
| Coexistence of high temperature and chloride ions | Sectioning: High-temperature section (310S), low-temperature slurry section (317L). |
- |
For all applications involving temperatures above 800°C, high-temperature flue gas, sulfur-bearing incineration, or heat treatment furnaces, specify TP310; whenever the medium contains saltwater or chloride ions, switch to TP317L.
ASTM A312 TP310 Application
1. Heat Treatment & Industrial Furnace Industry
2. Petrochemical & Coal Chemical Industries
3. Power & Energy Industry
4. Environmental Protection & Solid Waste Incineration Industry
ASTM A312 TP310 Application
ASTM A312 TP310 Product Price
| Specification |
DN |
Outside Diameter × Nominal Wall Thickness | Batch size ≥ 1 ton (USD/kg) | Small batch 500–1,000 kg (USD/kg) |
|
NPS1 SCH40 |
DN25 |
33.7×3.38mm |
4.10~4.50 |
4.60~5.10 |
|
NPS2 SCH40 |
DN50 |
60.3×3.91mm |
4.00~4.40 |
4.50~5.00 |
|
NPS3 SCH40 |
DN80 |
88.9×5.49mm |
3.90~4.30 |
4.40~4.90 |
|
SCH80 |
DN25 |
33.7×6.55mm |
4.30~4.80 |
4.80~5.404.70~5.30 |
|
SCH80 |
DN50 |
60.3×7.82mm |
4.20~4.70 |
4.70~5.30 |
|
SCH80 |
DN80 |
88.9×8.56mm |
4.10~4.60 |
4.60~5.20 |
If you would like to inquire about relevant information, please click the button below to contact us, and a qualified professional will respond to you.
ASTM A312 TP310 SS Pipe Test
We provide EN 3.1 (mill self-inspection) and EN 3.2 (third-party witnessed) certificates, product quality inspection reports, and data on actual elemental composition and dimensions (such as outer diameter and inner wall specifications) to meet the requirements for domestic pressure piping inspections, overseas commercial inspections, and the rigorous audits of clients in the nuclear power and chemical industries.
Hydrostatic pressure test
Test outer diameter
Chemical composition analysis
TP310 stainless steel material list
To learn more about our quality control process, please click the link below to view our product inspection videos, testing procedures, and inspection reports.
Comprehensive product packaging
The steel pipes are packaged by fitting solid, high-density plastic plugs or rubber protective caps of the appropriate size to both ends to tightly seal the openings; they are then wrapped in plastic and either bundled or packed in stacked wooden crates, with appropriate protective measures taken to ensure safety during transport or to meet seaworthiness requirements.
Customer Cases
GNEE exported 60 tons of ERW welded steel pipes to Indonesia. The pipes are used for pipeline laying in local large‑scale infrastructure projects and processed with galvanizing and epoxy anti‑corrosion coatings.
Customer feedback: The pipes deliver outstanding seawater corrosion resistance. Dedicated staff track the whole order process and shipments are delivered on schedule. The client publicly recognizes our professional team and has locked us as the long‑term supplier for marine engineering piping procurement.
FAQ
1.What is the difference between 310 stainless steel and 310S stainless steel?
The main difference between 310 and 310S stainless steel is carbon content: grade 310 has up to 0.25% carbon for greater high-temperature strength, while grade 310S limits carbon to a maximum of 0.08% to improve weldability and lower the risk of corrosion.
2.What are the main components of ASTM A312 TP310 stainless steel pipe?
The composition of A312 TP310 stainless steel pipe includes carbon, manganese, silicon, phosphorus, sulfur, chromium, and nickel; this composition enables the material to withstand strong oxidizing agents at high temperatures.
3.What is the difference between 310 and 316 stainless steel pipes?
The main difference between 310 and 316 stainless steel pipes lies in their heat resistance and corrosion resistance. 310 stainless steel is designed to withstand extreme high temperatures, whereas 316 stainless steel excels in resisting chemical and marine corrosion.
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