ASTM A312 TP310S welded Pipe For Chemical Industry
Grade：TP310S
UNS Number：S31008
Manufacturing Type ：Welded
Surface Condition：Solution Annealed & Pickled
End Connection Plain End, Beveled End , or Threaded
Outside Diameter (OD): NPS 1/8" to NPS 36"
Schedules: SCH 5S, 10S, 40S, 80S
Transport Package：Exporting Standard Packing
ASTM A312 TP310S,AISI 310 welded Tube Supplier
ASTM A312 TP310S (UNS S31008) is a super austenitic heat-resistant steel pipe specifically designed for extreme high-temperature industrial environments. GNEE specializes in supplying ASTM A312 TP310S pipes for chemical processing systems. With a composition of 25Cr-20Ni, this material can withstand temperatures up to 1150°C and offers excellent resistance to acids, alkalis, and hydrocarbon corrosion. It is widely used in catalytic cracking units, synthesis towers, coal gasification systems, and other critical industrial installations. We provide ASME-certified products along with customized fabrication services.
ASTM A312 TP310S industrial welded pipes feature an austenitic structure with a relatively low coefficient of thermal expansion (14.4 × 10⁻⁶/°C), effectively reducing the risk of thermal stress cracking caused by sudden temperature changes. Compared to ferritic heat-resistant steels, its service life is extended by approximately 30%. It is ideal for applications such as petrochemical cracking furnaces, heat exchangers, boiler superheaters, and nuclear thermal components.
ASTM A312 TP310S heat-resistant steel pipes support TIG and MIG welding processes, with ER310 filler wire recommended. Post-weld solution annealing is not required, and the susceptibility to intergranular corrosion in the heat-affected zone is reduced by up to 90%. In addition, its high-temperature oxidation resistance is more than 20% higher than that of 309S stainless steel pipes. It can operate continuously in air at temperatures up to 1100°C and demonstrates excellent resistance to oxide scale spallation under cyclic heating conditions.
ASTM A312 TP310S Stainless Steel ERW Pipe Specifications
| Category | Details |
|---|---|
| Standard Specification | ASTM A312 TP310 / ASME SA312 TP310 Stainless Steel Pipe |
| Types | Seamless, ERW (Electric Resistance Welded), Welded, EFW (Electric Fusion Welded) |
| Size Range | ½ inch to 6 inch NB (Nominal Bore) |
| Schedule / Wall Thickness | SCH 5, SCH 10, SCH 40, SCH 80, SCH 80S, SCH 160, SCH XS, SCH XXS |
| Surface Finish | Bright, Cold Finished, Annealed, Polished, Pickled |
| Technique | Cold Rolled, Hot Rolled |
| Wall Thickness Range | 0.1 mm to 60 mm |
| Manufacturing Technology | Hot Formed / Cold Formed |
| Applicable Standards | ASTM, ASME, AISI, JIS, DIN, EN, GB, GOST, AMS |
| Available Shapes | Round, Square, Rectangular, Box Section |
A312 TP310s Chemical Material Composition
| ASTM A312 | Si | P | C | Mn | S | Cr | Mo | Ni | N | |
| 310s | min. | – | – | – | – | – | 24.0 | – | 19.0 | – |
| max. | 1.50 | 0.045 | 0.25 | 2.0 | 0.030 | 26.0 | 22.0 | – | ||
SS 310 Pipe Mechanical Properties
| Grade | Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) min | Hardness | |
|---|---|---|---|---|---|
| Rockwell B (HR B) max | Brinell (HB) max | ||||
| 310 – 310S | 515 | 205 | 40 | 95 | 217 |
Why is TP310S chosen over TP304 or TP316 in chemical processing plants?
The fundamental difference lies in their temperature limits. TP304 and TP316 oxidize rapidly and lose their structural strength when exposed to temperatures exceeding 800°C. In contrast, due to its exceptionally high chromium (25%) and nickel (20%) content, TP310S maintains stable oxidation resistance up to 1100°C (2010°F). In chemical processes involving heat exchange, high-temperature gas transport, or cracking reactions, TP310S is the only viable choice for ensuring the system does not suffer a catastrophic structural failure.
Click to Access Technical Documentation: 304 vs. 316 vs. 310S
What does the "S" in TP310S stand for, and how does it differ from TP310?
The "S" stands for "Lower Carbon." TP310 has a maximum carbon content of 0.25%, whereas the carbon content of TP310S is restricted to below 0.08%. This lower carbon content significantly reduces carbide precipitation (sensitization) during welding, thereby preventing intergranular corrosion in the weld zones when exposed to acidic chemical environments or subjected to high-temperature thermal cycling.
Material Quality Certificate
SS TP310S welded round pipe Suppliers
GNEE is equipped with 25 units of various machinery and equipment dedicated to the precision manufacturing of steel pipes. This includes 15 cold rolling mills, 10 cold drawing machines, and two heat treatment furnaces. The total production capacity for stainless steel seamless pipes reaches 3,000 to 5,000 tons per month, with TP310S (heat-resistant grade) accounting for approximately 15% to 20% of the output.
Quality Inspection
100% Verification of Chemical Composition
Hydrostatic Test: ASTM A312 mandates that every pipe undergo a hydrostatic test to verify its leak-tightness under pressure.
Eddy Current Test: Detects the presence of minute cracks or pores within the pipe wall that are invisible to the naked eye.
Ultrasonic Test: For high-pressure or thick-walled piping in the chemical industry, UT inspection provides greater precision in detecting internal inclusions.
Standard export wooden crate packaging
Packaged using waterproof paper and steel strapping, meeting standard export requirements for sea freight and suitable for various modes of transport; packaging can also be customized according to client specifications.
Packaging
Standard Export Packaging for Stainless Steel Plates
1. Polished surface finish; 2. Strapped bundling;
3. Wooden crate packaging; Wooden pallet packaging;
4. Containerized or bulk shipment; 5. Customized according to client requirements.
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