Seamless Stainless steel TP310H pipe
Distinguished by its optimized carbon content, our TP310H tubing offers enhanced mechanical properties and thermal stability at service temperatures up to 1100°C (2012°F). This makes them indispensable for mission-critical applications in boiler tubes, radiant coils, and refinery equipment. Through advanced cold-drawing and precise solution annealing, GZH ensures every pipe maintains a uniform grain structure and maximum resistance to high-temperature corrosion and scaling.
"The controlled carbon range (0.04-0.10%) in our TP310H pipes ensures higher creep strength compared to the low-carbon 310S version, making it ideal for continuous high-load thermal applications."
What is a Seamless Stainless steel TP310H pipe?
Seamless Stainless steel TP310H pipe is a cylindrical tube crafted from a single, solid billet of stainless steel. Like other seamless products, it has no welded seam, which ensures superior structural integrity and reliability.
The"310H"designation signifies a high-carbon version of the 310 grade. The addition of a higher carbon content provides significantly improved creep rupture strength, which is crucial for components that must endure continuous stress under extreme heat without deforming over time. This makes 310H a top choice for high-temperature structural applications. It retains the same excellent resistance to oxidation and scaling as the standard 310 grade.
Key Features and Advantages
Stainless steel TP310H seamless pipe offer a unique combination of benefits that make them invaluable in the most demanding industries:
Superior Creep Rupture Strength: The high carbon content is the primary differentiator, providing enhanced strength and resistance to deformation under sustained high temperatures. This is critical for long-term reliability.
Extreme High-Temperature Resistance: Like the standard 310 grade, it offers exceptional resistance to oxidation and scaling, performing well under continuous use at temperatures up to 1150°C (2100°F).
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.
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.
Product Specifications and Data
To provide a comprehensive overview of this high-performance material, here are the detailed technical specifications and performance data for 310H stainless steel.
Table 1: Chemical Composition of Stainless Steel 310H
The composition of Stainless Steel 310H is carefully balanced to achieve its superior high-temperature strength and oxidation 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 | 0.04 - 0.10 |
Table 2: Typical Mechanical Properties of Stainless Steel 310H
Stainless Steel 310H is specifically designed to maintain its strength and shape in high-stress, high-temperature environments.
| Property | Value (Annealed) |
| Tensile Strength | ≥ 520 MPa |
| Yield Strength | ≥ 205 MPa |
| Elongation | ≥ 30% |
| Hardness | ≤ 217 HBW |
Table 3: Typical Physical Properties of Stainless Steel 310H
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 enhanced creep resistance of Seamless Stainless steel TP310H pipe makes them a preferred choice for:
Furnace Parts: Ideal for furnace linings, burners, and heat exchangers that must endure constant high temperatures and loads.
Thermal Processing Equipment: Components for equipment in the heat treatment and metallurgical industries, such as kilns, kilns, and heat-treating boxes.
Industrial Boilers: Used in boiler tubes and hangers where materials must withstand high heat and pressure over extended periods.
Chemical Processing: In systems handling hot, corrosive chemicals and gases, especially those under structural load.
Manufacturing Process
The manufacturing of a Seamless Stainless steel TP310H pipe 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 310H seamless pipe meets the highest standards for performance and reliability in the most demanding applications.
