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Raw Material Selection
Premium 310S stainless steel billets are selected for high chromium and nickel content.
The SS 310S Seamless Pipes are made of high-alloy austenitic SS that has about 24-26% chromium and 19-22% nickel, therefore, provides excellent high-temperature and corrosion resistance. It's made with low-carbon content, which improves the weldability and sensitization prevention and the geometrical design, which produces a uniform wall thickness, internal surfaces and good structural integrity. This material has a high content of chromium and nickel, which allows it to be strong, ductile, and tough, and be able to resist continuous and intermittent high temperature working conditions in seamless pipes made of SS 310S. The ASTM A312TP SS 310S Seamless pipes can be also made, cut and bent and not lose their durability. They also have a long and efficient flow and life span of fluid, and hence they are apt in a rough industrial environment.
They are normally employed in furnaces, boilers, heat exchangers, power plants and in petrochemical industries where resistance against oxidation, scaling and high temperature corrosion factors are applicable. SS 310S seamless pipes are available in different sizes, wall-thickness, length, and end-finishes like plain, bevel or threaded to fit the needs of different industries. The work of each pipe is carefully inspected, examined in mechanics, and examined in dimensions to achieve the standards, including ASTM A312 / ASME SA312, and ensure that the performance of the latter is stable in any purpose.
Table of Contents � SS 310S Seamless Pipes
- SS 310S Seamless Pipe Specifications
- SS 310S Seamless Pipes Chemical Composition
- Mechanical Properties of SS 310S Seamless Pipes
- 310S Stainless Steel Physical Properties
- Stainless Steel UNS S31008 Seamless Pipes Equivalent Grades
- Manufacturing Process of 310S Seamless Pipes
- Quality Assurance & Testing of Stainless Steel 310S Seamless Pipes
- Advantages of SS 310S Seamless Pipes
- Applications of 310S Seamless Pipes
- Why Choose Metinox Overseas?
- Frequently Asked Questions (FAQ)
SS 310S Seamless Pipe Specifications
| Category | Technical Specification |
| Product | SS 310 / 310S Seamless Pipes |
| Outer Diameter (OD) | Round Pipe: 6 � 710 mm Square Pipes: 10 mm x 10 mm � 400 mm x 400 mm Rectangular Pipes: 10 mm x 20 mm � 200 mm x 400 mm |
| Wall Thickness (WT) | Round Pipes: 1.0 � 50.0 mm Square Pipes: 1.0 mm � 20 mm Rectangular Pipes: 0.6 mm � 20 mm |
| Type | Seamless, Welded, ERW, EFW, 100% X-Ray Welded or Fabricated Pipes |
| Length | 2 m � 5.8 m, 6 m, 12 m |
| Surface Finish | Annealed & Pickled, Hot Rolled No.1 Mill Finish, Polished, Mirror, Matte, 240 Grit, 400 Grit, 500 Grit |
| Pipe End | Plain End / Bevel End, Groove End, Ends Joint with Flange or Fittings, Threaded on Two Ends, One End with Coupling, One End with Plastic Cap |
| Marking | As Per Client Requirements or Mill Standard |
| Packing | OD = 273 mm: Loose Packing � Piece by Piece OD < 273 mm: In Hexagonal Seaworthy Bundles Packed by Steel Strips On Request: Small Sizes May be Nested into Big Sizes |
| Production Method | Seamless, Hot Rolled, Cold Drawn, Heat Treated, Impact Tested |
| Trade Term | FOB, CFR, CIF, EXW |
| Payment Term | T/T, LC |
| Delivery Time | 15 � 45 days (based on quantity) after receiving advanced payment by T/T or LC |
SS 310S Seamless Pipes Chemical Composition
| Grade | C (%) | Mn (%) | P (%) | S (%) | Si (%) | Cr (%) | Ni (%) | Fe (%) |
| 310 | 0.25 max | 2.0 max | 0.045 | 0.030 | 1.50 max | 24.0�26.0 | 19.0�22.0 | Balance |
| 310S | 0.08 max | 2.0 max | 0.045 | 0.030 | 1.50 max | 24.0�26.0 | 19.0�22.0 | Balance |
Mechanical Properties of SS 310S Seamless Pipes
| Grade | Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) min | Hardness Rockwell B (HR B) max | Hardness Brinell (HB) max |
| SS 310S | 515 | 205 | 40 | 95 | 217 |
310S Stainless Steel Physical Properties
| Grade | Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) min | Hardness Rockwell B (HR B) max | Hardness Brinell (HB) max |
| 310S | 515 | 205 | 40 | 95 | 217 |
Stainless Steel UNS S31008 Seamless Pipes Equivalent Grades
| Type | UNS | W.Nr. | JIS | EN | BS | AFNOR | GOST |
| 310 | 31000 | 1.4841 | SUH310 | X15CrNi25-20 | 310S24 | � | 20Ch25N20S2 |
| 310S | S31008 | 1.4845 | SUH310S | X8CrNi25-21 | 310S16 / 310S24 / 310S31 | Z8CN25-20 | 10KH23N18 / 20KH23N18 |
Manufacturing Process of 310S Seamless Pipes
The manufacturing of 310S seamless pipes involves multiple precision-controlled steps to ensure high strength, corrosion resistance, and dimensional accuracy.
Quality Assurance & Testing of Stainless Steel 310S Seamless Pipes
The quality of SS 310S seamless pipes is important in high-temperature and corrosion-resistant applications. The quality assurance process involves a set of tests and checks to fulfill the international standards.
1. Positive Material Identification (PMI)
PMI testing is done to check the chemical composition of the SS; this is done to confirm that it is 310S.
2. Hydrostatic Testing
These tests applied to pipes are high-pressure water tests to determine whether they have leaks or not, and whether they can sustain the operating pressures.
3. Non-Destructive Testing (NDT)
Internal defects are detected with the help of such techniques as ultrasonic testing (UT) or radiography (X-ray) without harm to the pipe.
4. Dimensional Inspection
Measuring of pipes is done in terms of diameter, wall thickness and length to ensure that they satisfy the given tolerances.
5. MTC Documentation
A Mill Test Certificate (MTC) is issued, which contains the chemical composition, mechanical properties and test results, which guarantees traceability and standard compliance.
Applications of 310S Seamless Pipes
The SS 310S seamless pipes are widely used in industries that require excellent high-temperature strength, corrosion resistance, and durability. Common applications include:
Chemical and Petrochemical
It is used to transport corrosive chemicals, process fluids, and gases because it is better than other oxidation and corrosion-resistant surfaces.
Oil and Gas Industry
Used in high pressure pipelines, refineries and processing units where strength and heat resistance are the most important.
Power Generation Plants
It is always employed in making components of boilers, heat exchangers and superheater tubes due to the fact that they can withstand high temperatures.
Furnaces & Heat Equipment
Best on furnace tubes, radiant tubes, and systems in thermal processing at high temperatures.
Food and Beverages
Applied in hygienic piping systems where there is a need to have resistance to heat and oxidation and at the same time, there is no possibility of contamination.
Biotechnology and Pharmaceutical
They are applicable to clean steam lines and high purity where reliable and corrosion-free piping is necessary.
Why Choose Metinox Overseas for Stainless Steel 310S Seamless Pipes?
Here are some reasons why you should choose Metinox Overseas to get Stainless Steel 310S Seamless Pipes:
- ISO-Certified: The product is produced according to the ISO 9001:2015 standards.
- Reliable Experience: More than 45 years of experience in SS products.
- Broad Pressure Fitting: Fittings, flanges, and pipe, tube, fittings, and pipe of various grades.
- International Exports: The USA, Europe, the Middle East, and LATAM markets.
- Quick Delivery: There are warehouses that are strategically placed to make timely deliveries.
- Customer-Centric: Differentiated services, competitive prices, and responsive services.
- Qualified Personnel: Provides the product traceability, accuracy, and consistency.
Looking for High-Quality SS 310S Seamless Pipes?
Choose Metinox Overseas � Your Reliable Stainless Steel Pipe Manufacturer & Exporter.
Let us support your projects with quality, precision, and performance.
Frequently Asked Questions (FAQ)
The SS 310S seamless pipe is a high-chromium, high-nickel SS pipe made without welded joints, designed for high-temperature and corrosive environments.
Yes, SS 310S seamless pipes offer excellent resistance to oxidation and corrosion, especially at high temperatures.
The very common difference between them is that SS 310S has lower carbon content than SS 310, which improves weldability and reduces the risk of cracking during welding.
The Common equivalents of SS 310S include UNS S31008, EN 1.4845, and X8CrNi25-21.
Yes, SS 310S seamless pipes have good weldability and can be welded using standard SS welding methods.
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