UNS S31008 Welded Pipe
Grade: UNS S31008 / 310S
Type: Welded (EFW)
Process: TIG/Plasma Welding, Solution Annealed & Pickled
Test: UT, SGS testing, TUV etc
Package: Standard worthy packing
Quality control: MTC Test Certificate is supplied with shipment
Our UNS S31008 Welded Pipe is produced from high-quality strip/coil using advanced automatic welding techniques (TIG or Plasma Arc Welding). The resulting weld seam is strong, consistent, and often heat-treated to optimize corrosion resistance. The high chromium (Cr) and nickel (Ni) content in Grade 310S provides superior strength and scaling resistance at temperatures up to 1100°C (2012°F), making it a preferred choice for furnace parts, heat treatment equipment, and thermal processing systems. We offer a comprehensive range of sizes to meet diverse industrial requirements.
Key Features & Benefits
Exceptional Heat Resistance:
Withstands temperatures up to 1100°C continuously, resisting oxidation and scaling.
Excellent Corrosion Resistance:
Performs well in various corrosive atmospheres, particularly those involving sulfidation.
High Strength:
Maintains good mechanical properties at elevated temperatures.
Cost-Effective Solution:
Welded construction offers a significant advantage over seamless pipes for many applications without compromising on performance.
Ready for Service:
Available from stock for quick delivery.
Specifications
|
Parameter |
Details |
|
Standard |
ASTM A312, ASTM A358 |
|
Grade |
UNS S31008 / 310S |
|
Type |
Welded (EFW) |
|
Process |
TIG/Plasma Welding, Solution Annealed & Pickled |
|
Size Range |
OD: 1/2" (21.7mm) to 24" (609.6mm) |
|
Wall Thickness |
Schedule 5S to 80S |
|
Length |
Random Length (5-7 meters) or Cut-to-Length |
Chemical Composition (%)
|
Element |
ASTM A312 Requirement |
Typical Value |
|
Carbon (C) |
≤ 0.08 |
0.05 |
|
Manganese (Mn) |
≤ 2.0 |
1.3 |
|
Phosphorus (P) |
≤ 0.045 |
0.025 |
|
Sulfur (S) |
≤ 0.03 |
0.015 |
|
Silicon (Si) |
≤ 1.0 |
0.55 |
|
Chromium (Cr) |
24.0 - 26.0 |
25.0 |
|
Nickel (Ni) |
19.0 - 22.0 |
20.5 |
|
Iron (Fe) |
Balance |
Balance |
Mechanical Properties
|
Property |
Requirement |
Typical Value |
|
Tensile Strength |
≥ 515 MPa |
620 MPa |
|
Yield Strength (0.2% Offset) |
≥ 205 MPa |
310 MPa |
|
Elongation (% in 2") |
≥ 40% |
50% |
Equivalent Grades
dddddddd
|
Standard |
UNS |
EN (DIN) |
JIS |
|
Grade |
S31008 |
1.4845 |
SUS 310S |
Compliance & Rigorous Quality Testing
All our UNS S31008 welded pipes meet or exceed global standards (ASTM A312, ASME SA312, DIN 17458) and undergo strict third-party testing to ensure reliability for high-stakes industrial use:
- Hydrostatic Testing: Per ASTM A312, pipes are pressurized to design pressure with water to confirm zero leaks, eliminating weak points or pinholes.
- Ultrasonic/Eddy Current Inspection: Detects invisible flaws (weld cracks, inclusions, uneven wall thickness) to safeguard structural integrity.
- Chemical Composition Analysis: Verifies critical alloy content (24-26% Cr, 19-22% Ni, <0.08% C) and provides Material Test Reports (MTRs) for full traceability.
- Mechanical Property Testing: Confirms minimum strength (515 MPa tensile, 205 MPa yield, 40% elongation) to withstand industrial stresses.
- Oxidation Testing (ASTM G54): For high-temperature applications, validates resistance to scaling and degradation under extreme heat.
On-request certifications include ASME BPVC Section IX, ISO 9001, CE marking (EU), and FDA compliance (food/pharma use).
Applications
310 stainless steel pipe has a wide range of applications, including:
Industrial furnaces:
Furnace components, heat treatment furnaces, etc.
Boiler equipment:
Boiler tubes, superheater tubes, and reheater tubes.
Petrochemical industry:
Oil refining equipment and high-temperature piping.
Aerospace:
High-temperature component manufacturing.
Other high-temperature components:
Fluidized bed burners, crematoriums, muffle furnaces, etc.
FAQ
Q: What is the maximum continuous service temperature for 310S welded pipe?
A: UNS S31008 (310S) can be used continuously in oxidizing atmospheres at temperatures up to 1100°C (2012°F).
Q: Is welded pipe suitable for high-pressure applications at high temperatures?
A: While 310S welded pipe has good high-temperature strength, the suitability for high-pressure service depends on the specific design conditions, including temperature and pressure. Seamless pipe may be recommended for critical high-pressure applications. Consult our engineers for guidance.
Q: Can you provide polished or bevelled ends?
A: Yes, we can provide various finishes, including polished surfaces and bevelled ends ready for welding, upon request.
Request Your Quote Today!
Looking for a reliable supply of high-temperature UNS S31008 Welded Pipes? Contact BAOHUI STEEL for competitive pricing, fast delivery, and expert technical support.
WhatsApp: 8613468954786
Email:baohui@bhsteelpipe.com
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