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TP310S Stainless Steel Seamless Pipe - China Suppliers and Factory - Fast Delivery Available
Introduction
ASTM A312 TP310S seamless pipes are engineered for extreme environments demanding unmatched resistance to oxidation, carburization, and thermal cycling. With 25% chromium and 20% nickel, this high-performance austenitic alloy excels in sustained high-temperature operations, outperforming standard 300-series stainless steels in aggressive heat and corrosive conditions.
Key Features
- Extreme Temperature Stability: Operates reliably up to 1150°C (2100°F), ideal for furnaces, kilns, and pyrolysis systems.
- Oxidation & Carburization Resistance: High Cr/Ni content forms a protective oxide layer, preventing scaling and gas corrosion.
- Robust Mechanical Strength: Tensile strength ≥515 MPa, yield strength ≥205 MPa, even at elevated temperatures.
Why Choose TP310S Stainless Steel Pipe?
-
Exceptional High-Temperature Performance:
Maintains structural integrity at temperatures exceeding 1000°C, outperforming standard grades like 304/316.Minimizes scaling and deformation in cyclic heating environments.
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Superior Oxidation & Corrosion Resistance:
High chromium (Cr) content forms a protective oxide layer, resisting oxidation and sulfidation.Ideal for acidic/alkaline industrial processes and marine atmospheres.
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Long-Term Cost Efficiency:
Reduces downtime and replacement costs due to extended service life in harsh conditions.Low maintenance requirements compared to lower-grade steels.
-
Versatility:
Suitable for welding, forging, and machining, compatible with standard fabrication methods.
-
Compliance with Standards:
Meets ASTM A312/A999 and ASME specifications for industrial safety and reliability.
Example Use Case
Industrial Case Study
A chemical plant replaced carbon steel pipes with 310S pipes for transporting high-temperature corrosive gases, reducing annual maintenance costs by 40% and extending system lifespan by 8+ years.
Material Specification
Standard
ASTM A312/A312M
Outside Diameter (O.D.)
1/8" NB TO 32" NB (10.29mm - 812.80mm), Customization Available
Wall Thickness (W.T.)
SCH 10S, SCH 40S, SCH 80S, SCH160, SCH XXS, Customization Available
Applications
Chemical Industries, Thermal & Nuclear Power Plants, Fertilizer Plants, Aerospace, Food & Dairy Plants, Paper Industries, Oil & Gas Exploration, Desalination Plants, Pharmaceutical Plants
End Types
Plain End, Beveled End, Threaded
Processing
Cut-to-length, Polishing
Inspection
100% PMI Tested, EN10204.3.1B Mill Test Certificate, Third Party Inspection Accepted
Delivery Condition
Cold Drawn, Annealed and Pickled / Polished / Bright Annealed / Sand blasting / Shot Blasting
Marking
Standard, Grade, OD, Thickness, Length, Heat No. (Or as per customer's request)
Packing
Packed in Wooden Boxes, plywood cases, Steel Strips Bundled, or as per Customer's Request
Specials
Sizes and Specifications other than standard can be customized on request
Specification parameters
TP310S chemical composition
| HEAT NO. | CHEMICAL COMPOSITION (%) | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| C | Mn | P | S | Si | Ni | Cr | Mo | ||
| STAND. | MIN. | - | - | - | - | - | 19.00 | 24.00 | 0.75 |
| MAX. | 0.08 | 2.00 | 0.045 | 0.030 | 1.00 | 22.00 | 26.00 | - | |
TP310S Mechanical Properties
| Mechanical Properties | |||||
|---|---|---|---|---|---|
| Grade | Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) min | Hardness | |
| Rockwell B (HR B) | Brinell (HB) | ||||
| TP310S | 515 | 205 | 35 | 90 | 187 |
Equivalent Grades - (ASTM A312 TP310S Equivalent Grades)
| ASTM A312 TP310S Equivalent Grades | ||||||
|---|---|---|---|---|---|---|
| ISO | EN (Europe) | DIN (Germany) | JIS (Japan) | GB (China) | UNS (USA) | AISI/SAE |
| X8CrNi25-21 (ISO 15510) | 1.4845 (EN 10088-2) | X8CrNi25-21 (DIN 17440) | SUS 310S (JIS G3459) | 06Cr25Ni20 (GB/T 14976) | S31008 | 310S |
ASTM A312/A312M Standard Cold Machining Size Deviation Permitted
| ASTM A312/A312M-09 Standard Permitted Tolerance of WT and OD | |||||
|---|---|---|---|---|---|
| Nominal Outside Diameter | Allowable deviation | Nominal wall thickness | Allowable deviation | ||
| 1/8"—1 1/2“ | (10.29—48.26) | +0.4 -0.8 | 1/8"—1 1/2“ | (10.29-73.03) all of t | +20 -12.5 |
| >1 1/2“—4” | (48.26—114.3) | ±0.8 | 3“—18” | (88.9-457.2) t/D=5% | +22.5 -12.5 |
| >4”—8" | (114.3—219.08) | +1.6 -0.8 | 3“—18” | (88.9-457.2) t/D>5% | +15 -12.5 |
| >8“—18" | (219.08—457.2) | +2.4 -0.8 | ≥20" | =508 t of wld pipe | +17.5 -12.5 |
| >18”—26“ | (457.2—660.4) | +3.2 -0.8 | ≥20" | =508 t/D=5% | +22.5 -12.5 |
| >26”—34” | (660.4—863.6) | +4.0 -0.8 | ≥20" | =508 t/D>5% | +15 -12.5 |
| >34“—48" | (863.6—1219.2) | +4.8 -0.8 | - | - | - |
| Thin wall pipe (t/D=3%) ovality condition: Any cross section in a steel pipe Dmax Dmin=1.5%nominal,and(Dmax Dmin)/ 2 conforms to the stipulated diameter tolerance range. | |||||
Comparison Table Of American Standard Dimensions - (ANSI B36.19 & ANSI B36.10)
| OD DN | IN | OD MM | ANSI B36.19 | ANSI B36.10 | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Nominal diameter in inches | ||||||||||||||||||||
| 5s | 10s | Sched.40s | Sched.40 | Sched.80s | Sched.80 | 10 | 20 | 30 | Standard | |||||||||||
| mm | Kg/m | mm | Kg/m | mm | Kg/m | mm | mm | Kg/m | mm | mm | Kg/m | mm | Kg/m | mm | Kg/m | mm | Kg/m | |||
| 6 | 1/8" | 10.29 | - | - | 1.24 | 0.281 | 1.73 | 371 | 1.73 | 2.41 | 0.467 | 2.41 | - | - | - | - | - | - | 1.73 | 0.371 |
| 8 | 1/4" | 13.72 | - | - | 1.65 | 0.499 | 2.24 | 0.644 | 2 | 3.02 | 0.809 | 3.02 | - | - | - | - | - | - | 2.24 | 0.644 |
| 10 | 3/8" | 17.14 | - | - | 1.65 | 0.64 | 2.31 | 0.858 | 2.31 | 3.2 | 1.118 | 3.2 | - | - | - | - | - | - | 2.31 | 0.858 |
| 15 | 1/2" | 21.34 | 1.65 | 0.814 | 2.11 | 1.016 | 2.77 | 1.26 | 2.77 | 3.73 | 1.62 | 3.73 | - | - | - | - | - | - | 2.77 | 1.26 |
| 20 | 3/4" | 26.67 | 1.65 | 1.034 | 2.11 | 1.298 | 2.87 | 1.68 | 2.87 | 3.91 | 2.19 | 3.91 | - | - | - | - | - | - | 2.87 | 1.68 |
| 25 | 1" | 33.4 | 1.65 | 1.312 | 2.77 | 2.125 | 3.38 | 2.5 | 3.38 | 4.55 | 3.23 | 4.55 | - | - | - | - | - | - | 3.36 | 2.5 |
| 32 | 1 1/4" | 42.16 | 1.65 | 1.674 | 2.77 | 2.732 | 3.56 | 3.38 | 3.56 | 4.85 | 4.46 | 4.85 | - | - | - | - | - | - | 3.56 | 3.38 |
| 40 | 1 1/2" | 48.26 | 1.65 | 1.926 | 2.77 | 3.155 | 3.68 | 4.05 | 3.68 | 5.08 | 5.4 | 5.08 | - | - | - | - | - | - | 3.68 | 4.05 |
| 50 | 2" | 60.32 | 1.65 | 2.424 | 2.77 | 3.992 | 3.91 | 5.43 | 3.91 | 5.54 | 7.47 | 5.54 | - | - | - | - | - | - | 3.91 | 5.43 |
| 65 | 2 1/2" | 73.02 | 2.11 | 3.747 | 3.05 | 5.345 | 5.16 | 8.62 | 5.16 | 7.01 | 11.4 | 7.01 | - | - | - | - | - | - | 5.16 | 8.62 |
| 80 | 3" | 88.9 | 2.11 | 4.585 | 3.05 | 6.557 | 5.49 | 11.28 | 5.49 | 7.62 | 15.25 | 7.62 | - | - | - | - | - | - | 5.49 | 11.28 |
| 90 | 3 1/2" | 101.6 | 2.11 | 5.272 | 3.05 | 7.526 | 5.74 | 13.56 | 5.74 | 8.08 | 18.62 | 8.08 | - | - | - | - | - | - | 5.74 | 13.56 |
| 100 | 4" | 114.3 | 2.11 | 5.945 | 3.05 | 8.496 | 6.02 | 16.06 | 6.02 | 8.56 | 22.29 | 8.56 | - | - | - | - | - | - | 6.02 | 16.06 |
| 125 | 5" | 141.3 | 2.77 | 9.639 | 3.4 | 11.74 | 6.55 | 21.76 | 6.55 | 9.52 | 30.92 | 9.52 | - | - | - | - | - | - | 6.55 | 21.76 |
| 150 | 6" | 168.28 | 2.77 | 11.514 | 3.4 | 14.037 | 7.11 | 28.23 | 7.11 | 10.97 | 42.52 | 10.97 | - | - | - | - | - | - | 7.11 | 28.23 |
| 200 | 8" | 219.08 | 2.77 | 15.049 | 3.76 | 20.334 | 8.18 | 42.49 | 8.18 | 12.7 | 64.57 | 12.7 | - | - | 6.35 | 33.28 | 7.04 | 36.8 | 8.18 | 42.4 |
| 250 | 10" | 273.05 | 3.4 | 23.028 | 4.19 | 28.29 | 9.27 | 60.24 | 9.27 | 12.7 | 81.46 | 15.09 | - | - | 6.35 | 41.7 | 7.8 | 51 | 9.27 | 60.24 |
| 300 | 12" | 323.85 | 3.96 | 31.806 | 4.57 | 36.633 | 9.52 | 73.76 | 10.31 | 12.7 | 97.36 | 17.48 | - | - | 6.35 | 49.68 | 8.38 | 65.14 | 9.52 | 73.76 |
| 350 | 14" | 355.6 | 3.98 | 34.99 | 4.78 | 42.102 | 9.52 | - | 11.13 | - | - | 19.05 | 6.35 | 54.63 | 7.92 | 67.98 | 9.52 | 81.21 | 9.52 | 81.21 |
| 400 | 16" | 406.4 | 4.19 | 42.35 | 4.78 | 48.22 | 9.52 | - | 12.7 | - | - | 21.44 | 6.35 | 62.58 | 7.92 | 77.9 | 9.52 | 93.13 | 9.52 | 93.18 |
| 450 | 18" | 457.2 | 4.19 | 47.7 | 4.78 | 54.3 | 9.52 | - | 14.27 | - | - | 23.82 | 6.35 | 70.5 | 7.92 | 87.8 | 11.13 | 122.12 | 9.52 | 105.05 |
| 500 | 20" | 508 | 4.77 | 60.32 | 5.54 | 69.766 | 9.52 | - | 15.09 | - | - | 26.19 | 6.35 | 78.47 | 9.52 | 116.97 | 12.7 | 155 | 9.52 | 116.97 |
| 550 | 22" | 558.8 | 4.77 | - | 5.54 | - | 9.52 | - | - | - | - | 28.58 | 6.35 | 86.42 | 9.52 | 128.89 | 12.7 | 170.86 | 9.52 | 128.89 |
| 600 | 24" | 609.6 | 5.54 | 84.1 | 6.35 | 96.215 | 9.52 | - | 17.48 | - | - | 30.96 | 6.35 | 96.215 | 9.52 | 140.8 | 14.7 | 209.54 | 9.52 | 140.81 |
| 650 | 26" | 660.4 | - | - | - | - | 9.52 | - | - | - | - | - | 7.92 | 127.58 | 12.7 | 202.65 | - | - | 9.52 | 152.73 |
| 700 | 28" | 711.2 | - | - | - | - | 9.52 | - | - | - | - | - | 7.92 | 137.52 | 12.7 | 218.54 | 15.88 | 271.94 | 9.52 | 164.65 |
| 750 | 30" | 762 | 6.35 | 120.59 | 7.92 | 147.45 | 9.52 | - | - | - | - | - | 7.92 | 147.45 | 12.7 | 234.44 | 15.88 | 291.81 | 9.52 | 176.57 |
| 800 | 32" | 812 | - | - | - | - | 9.52 | - | 17.48 | - | - | - | 7.92 | 157.39 | 12.7 | 250.33 | 15.88 | 311.67 | 9.52 | 188.5 |
| 850 | 34" | 863.6 | - | - | - | - | 9.52 | - | 17.48 | - | - | - | 7.92 | 167.32 | 12.7 | 266.22 | 15.88 | 331.54 | 9.52 | 200.42 |
| 900 | 36" | 914.4 | - | - | - | - | 9.52 | - | 19.05 | - | - | - | 7.92 | 177.26 | 12.7 | 282.18 | 15.88 | 351.41 | 9.52 | 212.34 |
Frequently Asked Questions (FAQ)
What are the key benefits of ASTM A312 TP310S seamless pipes?
ASTM A312 TP310S seamless pipes contain high levels of chromium (25%) and nickel (20%), providing superior resistance to oxidation, carburization, and thermal cycling at elevated temperatures compared to standard 304 or 316 stainless steels.
What is the maximum operating temperature for TP310S pipes?
TP310S stainless steel pipes can operate reliably in extreme environments at temperatures up to 1150°C (2100°F) without scaling or losing structural integrity.
What are the equivalent international grades for ASTM A312 TP310S?
Equivalent international grades include UNS S31008 (USA), SUS 310S (JIS Japan), 1.4845 (EN Europe), X8CrNi25-21 (ISO/DIN), and 06Cr25Ni20 (GB China).
What industries commonly use TP310S seamless pipes?
They are widely used in chemical industries, thermal & nuclear power plants, fertilizer plants, aerospace, food & dairy plants, paper industries, oil & gas exploration, desalination plants, and pharmaceutical plants.
What mechanical properties does TP310S steel offer?
TP310S steel features a minimum tensile strength of 515 MPa, a minimum yield strength of 205 MPa, a minimum elongation of 35%, and a maximum hardness of 90 HRB (Rockwell B) or 187 HB (Brinell).
What inspection and testing standards are applied to these pipes?
All TP310S seamless pipes are 100% PMI tested, accompanied by EN10204.3.1B Mill Test Certificates, and are open to third-party inspections to verify compliance with ASTM A312/A312M standards.