304H Stainless Pipes 4in Sch10S, ASME SA312, High-Temp, Power Plant Boilers
304H Stainless Steel Pipes (4" Sch10S) by Jiangsu China Steel Union Industrial Co., Ltd are engineered for high-temperature applications in power generation, petrochemical refineries, and industrial boilers. Compliant with ASME SA312, these pipes leverage a higher carbon content (0.04–0.10%) compared to standard 304/304L, enhancing creep resistance and oxidation stability at temperatures up to 870°C. The 4" Sch10S dimensions (OD: 114.3mm, Wall Thickness: 3.05mm) ensure optimal pressure handling in superheated steam lines, while seamless construction eliminates weld vulnerabilities. Ideal for cyclic thermal environments, these pipes resist scaling, sulfidation, and thermal fatigue in coal-fired, gas-fired, and nuclear power plants.
2. Detailed Specifications
| Parameter | Details |
| Material | 304H Stainless Steel (UNS S30409 / ASME SA312 TP304H) |
| Element Composition | Cr: 18–20%, Ni: 8–10.5%, C: 0.04–0.10%, Mn: ≤2%, Si: ≤0.75%, P: ≤0.045%, S: ≤0.03%, Fe: Balance |
| Dimensions | Nominal Size: 4" (114.3mm OD), Wall Thickness: 3.05mm (Sch10S), Length: 6–12m (Customizable) |
| Certifications | ASME SA312, EN 10216-5, NACE MR0103 (Sour Service), PED 2014/68/EU, ISO 9001:2015 |
| Mechanical Properties | Tensile Strength: ≥515 MPa
Yield Strength: ≥205 MPa
Elongation: ≥35%
Hardness: ≤90 HRB |
| Temperature Range | Continuous: -196°C to 870°C
Intermittent: Up to 925°C (Oxidation Resistance) |
| Surface Finish | Annealed & Pickled, Shot-Blasted, or Bright Annealed (BA) |
| Applications | Superheater tubes, boiler steam headers, flue gas ducts, hydrocracker pipelines |
3. Advantages of Importing Our Product
- High-Temp Expertise: Optimized carbon content for ASME SA312 compliance in creep-critical applications.
- Cost Savings: 30% lower pricing than U.S./EU mills, with Jiangsu’s in-house billet casting and cold-drawing facilities.
- Fast Delivery: 15,000-ton annual capacity; 12-day lead time for ASME-certified orders.
- Quality Assurance: Full PMI testing, hydrostatic/ultrasonic inspection, and MTRs with heat code traceability.
- Custom Solutions: Pre-insulated pipes, induction bends, and ASME B16.25 welded ends for retrofit projects.
4. Key Applications
- Power Generation: Superheated steam piping, boiler tube bundles, and turbine bypass systems.
- Petrochemical Plants: High-temperature transfer of hydrogen, sulfur compounds, and refinery gases.
- Heat Exchangers: Shell-and-tube exchangers for waste heat recovery and cogeneration units.
- Industrial Furnaces: Radiant tubes and burner quarls in annealing and heat treatment furnaces.
Jiangsu China Steel Union Industrial Co., Ltd delivers ASME SA312-certified 304H stainless steel pipes that combine unmatched high-temperature strength, corrosion resistance, and compliance for energy and industrial sectors demanding reliability in extreme operating conditions.
Q1. What are your company's main products ?
A1: Our main products are stainless steel, carbon steel, galvanized steel, aluminium steel, ppgi steel products, including sheets, pipes, coils, strips, bars and channels.
Q2. What are the advantages of your company ?
A2: We guarantee that the quantity and specification of products are in full compliance with the standards of customer orders. We support any kinds of test. In addition, We also have more professional service and competitive price.
Q3. How do you control quality ?
A3: We provide Factory Test Report, also support Third Party Inspection.
Q4. How many coutries you already exported ?
A4: Exported to more than 50 countries mainly from Middle East, Russia, United States, Canada, Italy, Germany, Australia, Egypt, Chile, Mexico, Venezuela, Argentina, Kuwait, Saudi Arabia, UAE, Sri Lanka, Indonesia, Bangladesh, Turkey, India, etc.
Q5. Can you provide sample ? Do you support OEM ?
A5: Yes. Small samples in store can be provided for free. Customized samples will take about 2-3days.
Q6: What's your payment terms ?
A6: By T/T, L/C (30% deposit in advance, balance 70% before shipment), Western Union, Paypal, or Trade Online.
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Sch10S 304H Stainless Steel Pipe ASME SA312 For Power Plant Boilers Images
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