ASTM A312 TP304H Stainless Steel Pipes
1. Grade: TP304/TP304L, TP316/TP316L, TP316Ti, TP317/TP317L, TP321/TP321H, TP347/TP347H, TP309S/TP309H, TP310S/TP310H
2. Standard: ASTM A312/A312M-22
3. Process: Seamless (SMLS), Welded (WLD), Heavily Cold Worked (HCW)
4. Size Range: NPS 1/8"–48" (DN6–DN1200 / Ø10.3 mm–Ø1219 mm)
5. Wall Thickness: Sch 5S–Sch XXS
6. Wall Thickness Tolerance: +15%~+22.5% / -12.5% (According to ASTM A312)
7. Heat Treatment: Solution Annealed & Water Quenched
8. Surface Finish: Pickled, Bright Annealed, Polished, Passivated
9. Application: Oil & Gas, Petrochemical, Power Plant, Boiler, Chemical Industry
10. Certification: ISO 9001, PED, TUV, ISO 17025 Laboratory
Description
ASTM A312 TP304H Stainless Steel Pipes – High-Temperature Performance You Can Trust
When your venture requests dependable execution at raised temperatures, ASTM A312 TP304H Stainless Steel Pipes provide the quality and strength you require. Fabricated by YOUFASS Stainless Steel Pipe Co., Ltd., our TP304H pipes are built with improved carbon substance for prevalent crawl resistance. With 15 present day generation lines creating 50,000 tons every year and supported by ISO 9001, PED, and TÜV certifications, we offer sizes from NPS 1/8" to 48" (Ø10.3 mm–Ø1219 mm) with divider thickness extending from Sch 5S to Sch XXS. Each pipe experiences arrangement toughening and water extinguishing, guaranteeing reliable quality for your basic applications.
Why Choose TP304H for High-Temperature Applications?
You're looking for materials that won't let you down when temperatures rise. TP304H stands out since of its specialized composition.
Unlike standard 304 review, this high-carbon variation keeps up its mechanical properties indeed beneath supported warm push. Your control plants, boilers, and warm exchangers require materials that stand up to crawl distortion amid long-term operation.
The higher carbon substance works at the atomic level. It anticipates grain boundary sliding at hoisted temperatures, amplifying your equipment's benefit life.






Technical Specifications at a Glance
Here's what you get with our ASTM A312 TP304H Stainless Steel Pipes:
| Parameter | Specification |
|---|---|
| Standard | ASTM A312/A312M-22 |
| Available Grades | TP304/TP304L, TP316/TP316L, TP316Ti, TP317/TP317L, TP321/TP321H, TP347/TP347H, TP309S/TP309H, TP310S/TP310H |
| Manufacturing Process | Seamless (SMLS), Welded (WLD), Heavily Cold Worked (HCW) |
| Outside Diameter | NPS 1/8"–48" (DN6–DN1200 / Ø10.3 mm–Ø1219 mm) |
| Wall Thickness | Sch 5S – Sch XXS |
| Thickness Tolerance | +15% to +22.5% / -12.5% (Per ASTM A312) |
| Length Options | Random length or fixed length |
| Heat Treatment | Solution Annealed & Water Quenched |
| Surface Finish | Pickled & Annealed, Bright Annealed, Electropolished, Passivated |
| End Finish | Plain end (up to 2"), Beveled end (2" and above) |
| Packaging | Wooden box with optional steel frame, hexagonal binding + woven bag |
Where You'll Use These ASTM A312 TP304H Stainless Steel Pipes
Your industry has particular requests. Our ASTM A312 TP304H Stainless Steel Pipes exceed expectations in:
Power Era: Superheater tubes and high-pressure steam lines that work at 500–900°C.
Petrochemical Handling: Reactor channeling and handle lines dealing with destructive liquids at raised temperatures.
Heat Exchanger Frameworks: Tube bundles in refineries where warm cycling is constant.
Boiler Development: Heater components and weight vessels requiring supported high-temperature strength.
The combination of erosion resistance and warm solidness makes these pipes flexible over different sectors.
What Makes YOUFASS Your Reliable Partner
You require more than fair products—you require certainty in your supply chain.
Production Capacity That Matches Your Request: Our 15 generation lines and 200+ gifted workers guarantee we meet your venture timelines. With quickest conveyance in 7 days to Tianjin Port, you won't confront delays.
Quality Control at Each Organize: From crude fabric confirmation to last review, we keep up traceability. Our ISO 17025-accredited research facility performs comprehensive testing, and you'll get total documentation—MTC/MTR (3.1/3.2), TPI reports, WPS/PQR, and UT/RT reports.
Flexible Arrange Amounts: Whether you require one pipe for testing or bulk amounts for major ventures, we oblige orders beginning from fair 1 pipe.
Technical Bolster When You Require It: Our group gives on-site commissioning help and designing bolster all through your extend life






Standards and Certifications:
- ISO 9001 Quality Management
- PED (Pressure Equipment Directive)
- TÜV certification.

Flexible requesting, quick delivery:
Need a test? We'll facilitate end-to-end supply. With quickest conveyance in 7 days to Tianjin Harbour, your plan remains on track.








Clients' approval & trust

Frequently Asked Questions
Q:What is TP304H stainless steel pipe?
A:TP304H is a high-carbon adaptation of standard 304 austenitic stainless steel, particularly outlined to keep up quality at tall working temperatures. The "H" assignment shows higher carbon substance (0.04–0.10%), which altogether progresses crawl resistance over 500°C.
Q:What industries use TP304H pipes?
A:You'll discover TP304H pipes commonly utilized in control era plants, mechanical boilers, petrochemical refineries, warm exchanger fabricating, and any application requiring supported execution at hoisted temperatures between 500–850°C.
Q:How does TP304H differ from TP304?
A:The key distinction lies in carbon substance. TP304H contains 0.04–0.10% carbon, whereas standard TP304 has greatest 0.08%. This higher carbon gives way better crawl resistance and anticipates grain boundary carbide precipitation amid high-temperature benefit, making TP304H perfect for applications where standard 304 would involvement quality degradation.
Start Your Project With Confidence
Contact our team at info@youfass.com to discuss your specifications for ASTM A312 TP304H Stainless Steel Pipes and receive a detailed quote.
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