Seamless Stainless Steel TP310S Pipe
Featuring a high Chromium (25%) and Nickel (20%) content, our TP310S tubing provides superior resistance to sulfidation and carburizing atmospheres at continuous service temperatures up to 1035°C (1900°F). The low-carbon variant (310S) minimizes carbide precipitation during welding, ensuring optimal corrosion resistance in demanding heat treatment and petrochemical infrastructure. Through advanced cold-drawing and precise solution annealing, GZH guarantees uniform grain structure and maximum durability for mission-critical industrial applications.
“For applications requiring higher creep strength, we also offer TP310H (UNS S31009) with optimized carbon content.”
What Is a Seamless Stainless Steel TP310S Pipe?
Seamless Stainless Steel TP310S Pipe is a cylindrical tube crafted from a single, solid billet of stainless steel. Like other seamless products, it has no weld joint, which ensures superior structural integrity and reliability.
The"310S"designation signifies a low-carbon version of the TP310S grade. While TP310S is a superb high-temperature material, its carbon content can lead to"sensitization"(carbide precipitation) in the weld zone, which can compromise corrosion resistance. By lowering the carbon content, 310S effectively prevents this issue, making it a highly weldable material that retains its full corrosion resistance after fabrication. It retains the same excellent resistance to oxidation and scaling as the standard TP310S grade.
Key Features and Advantages
Seamless TP310S Pipes offer a unique combination of benefits that make them invaluable in the most demanding industries:
Excellent Weldability: The low carbon content makes it highly resistant to sensitization and intergranular corrosion after welding. This is its primary advantage over standard TP310S , simplifying fabrication and ensuring the material’s integrity.
Extreme High-Temperature Resistance: Like the standard 310 grade, it provides exceptional resistance to oxidation and scaling. It can be used continuously at temperatures up to 1150°C (2100°F).
High Pressure Tolerance: The seamless construction eliminates a potential weak point, allowing the pipe to safely handle high internal pressures, which is critical in many high-temperature processes.
Excellent Corrosion Resistance: It offers superior corrosion resistance compared to many other stainless steel grades, performing well in both high-temperature and aggressive corrosive environments.
Product Specifications and Data
To provide a comprehensive overview of this high-performance material, here are the detailed technical specifications and performance data for stainless steel seamless TP310S pipe.
Table 1: Chemical Composition of Stainless Steel 310S
The composition of Stainless Steel 310S is carefully balanced to achieve its superior high-temperature stability and corrosion resistance.
| Cr | Ni | Mn | Si | P | S | Fe | C |
| 24.00 - 26.00 | 19.00 - 22.00 | ≤ 2.00 | ≤ 1.50 | ≤ 0.045 | ≤ 0.030 | Bal | ≤ 0.08 |
Table 2: Typical Mechanical Properties of Stainless Steel 310S
Stainless Steel 310S is specifically designed to maintain its strength and shape in high-stress, high-temperature environments.
| Property | Value (Annealed) |
| Tensile Strength | ≥ 515 MPa |
| Yield Strength | ≥ 205 MPa |
| Elongation | ≥ 30% |
| Hardness | ≤ 217 HBW |
Table 3: Typical Physical Properties of Stainless Steel 310S
These physical properties highlight the material's ability to perform reliably under a wide range of conditions.
| Property | Value |
| Density | 7.9 g/cm³ |
| Melting Point | 1400 - 1450 °C approx. |
| Thermal Expansion | 16.5 µm/m·°C (20-100°C) |
| Thermal Conductivity | 14.2 W/m·K (20°C) |
| Modulus of Elasticity | 200 GPa |
| Electrical Resistivity | 0.78 x 10⁻⁶ Ω·m (20°C) |
Table 4: The Standard of Stainless Steel Seamless Pipe Size Tolerance Size Chart :
| Standard | OD(D) | Tolerance（MM) | Thickness(S) | Tolerance(MM) | Length | Tolerance | |
| MM | Common | High | MM | MM | |||
| ASTM A312 | D≤48.3 | +0.4/-0.8 | 10.3 | +20%-12.5% | +6.0/0 | ||
| 48.3 | ±0.8 | 88.9 | +22.5%/-12.5% | ||||
| 114.3 | +1.6/-0.8 | 88.9 | +15%/-12.5% | ||||
| 219.1 | +2.4/-0.8 | D≥508, t/D≤5%,SMLS | +22.5%/-12.5% | ||||
| 457.2 | +3.2/-0.8 | D≥508, t/D>5%,SMLS | +15%/-12.5% | ||||
| 660.4 | +4.0/-0.8 | D≥508, WELD | +17.5%/-12.5% | ||||
| 863.6 | +4.8/-0.8 | ||||||
| JIS 3459 Hot-Finished Smls Pipe | D＜50 | ±0.51 | S＜4 | ±0.5 | |||
| D≥50 | ±1.0% | S≥4 | ±12.5% | ||||
| JIS 3459 Cold-Finished | D＜30 | ±0.3 | S＜2 | ±0.2 | |||
| D≥30 | ±1.0% | S≥2 | ±10.0% | ||||
| JIS G3463 Hot-Finished Smls Pipe | 100 | +0.4/-0.8 | D＜100，S<2 | / | D<50, L<7M | +7/0 | |
| D＜100，2≤S<2.4 | +40%/0 | D<50,7< L<10M | +10/0 | ||||
| D＜100，2.4≤S<3.8 | +35%/0 | ||||||
| D＜100，3.8≤S<4.6 | +33%/0 | ||||||
| D＜100，4.6≤S | +28%/0 | D<50,10< L<13M | +13/0 | ||||
| 100≤D<120 | +0.4/-1.2 | D>100, S＜2 | / | ||||
| 120≤D<160 | D>100，2≤S<2.4 | / | D<50,13M< L | +15/0 | |||
| 160≤D<200 | +0.4/-1.8 | D>100，2.4≤S<3.8 | +35%/0 | ||||
| 200≤D | +0.4/-2.4 | D>100，3.8≤S<4.6 | +33%/0 | D>50,7< L<7M | +10/0 | ||
| D>100，4.6≤S | +28%/0 | ||||||
| JIS G3463 Cold-finished | <60 | +0.4/-0.8 | D<40, S<2.0 | +0.4/0 | |||
| 60≤D<80 | ±0.3 | D<40, S≥2.0 | +20%/0 | D>50,7< L<10M | +13/0 | ||
| 80≤D<100 | ±0.4 | D≥40 | +22%/0 | ||||
| 100≤D<120 | +0.4/-0.6 | ||||||
| 120≤D<160 | +0.4/-0.8 | D>50,10M< L | +15/0 | ||||
| 160≤D<200 | +0.4/-1.2 | ||||||
| 200≤D | +0.4/-1.6 | ||||||
| GB/T 14975 冷拔(扎)钢管 | D<12.7 | ±0.3 | ±0.1 | 所有壁厚，普通级PA | +12.5%/-10% | ||
| 12.7 | ±0.15 | ||||||
| 38.1 | ±0.4 | ±0.3 | |||||
| 88.9 | ±0.9% | ±0.4 | |||||
| 139.7 | ±0.8 | 所有壁厚，高级PC | ±10% | ||||
| 203.2 | ±1.1 | ||||||
| 219.1 | ±1.6 | ||||||
| D≥323.9 | ±0.5% | ||||||
| GB/T 14976 冷拔(轧)钢管 | 6 | ±0.2 | ±0.15 | S≤3 | ±12%(10% /0高级PC) | ||
| 10≤D<30 | ±0.2 | ±0.2 | |||||
| 30≤D<50 | ±0.2 | ±0.3 | S>3 | +12.5%/-10%(10%/0高级PC) | |||
| 50≤D<219 | 0.85% | 0.75% | |||||
| D>219 | 0.9% | 0.8% | Smin, all | +22%/0(+20%/0高级PC) | |||
Common Applications
The unique combination of extreme heat resistance and superior weldability makes 310S stainless steel seamless pipes a preferred choice for:
Furnace Parts: Used for furnace linings, burners, and heat shields in industrial furnaces and kilns, where extensive welding and high temperatures are present.
Chemical Processing: In systems handling hot, corrosive chemicals and gases, especially when post-weld heat treatment is not practical.
Thermal Processing Equipment: Components for equipment in the heat treatment and metallurgical industries.
Cryogenic Applications: Its low magnetic permeability and excellent toughness at cryogenic temperatures also make it suitable for some cold-temperature applications.
Manufacturing Process
The manufacturing of a Seamless Stainless Steel TP310S Pipes is a precise, multi-step process:
- Heating: A solid steel billet is heated to a high temperature.
- Piercing: A piercing mill pushes a mandrel through the center of the heated billet to form a hollow shell.
- Rolling and Sizing: The hollow shell is then rolled and drawn to reduce its diameter and wall thickness to the desired dimensions.
- Finishing: The pipe is cut to length, heat-treated, and subjected to finishing processes like pickling to achieve its final state.
This meticulous process ensures that every 310S seamless pipe meets the highest standards for performance and reliability in the most demanding applications.
