Stainless Steel 309H Pipes in seamless, ERW and welded to ASTM A312. Compare quotes from verified suppliers on MetalMitra, with MTC 3.1 and worldwide delivery.
- Stainless Steel 309H Pipes
- SS 309H
- Seamless
- ERW
- Welded
- Large Diameter
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Specifications
| Material Grade | Stainless Steel 309H |
|---|---|
| Specifications | ASTM A213 / ASME SA213, ASTM A249, ASTM A269, ASTM A312 / ASME SA312, ASTM A358 |
| Dimensions | ASTM, ASME, API and customer-specific requirements |
| General Size | 1/8" NB to 30" NB |
| 309H Pipes & Tubes | 6 NB to 1200 NB |
| 309H Tubing Range | 1/2" OD – 12" OD |
| Tubing Gauge | 25 SWG – 10 SWG |
| ERW 309H Pipes & Tubes | 1/2" NB – 24" NB |
| EFW 309H Pipes & Tubes | 6" NB – 100" NB |
| Outer Diameter | 6.00 mm up to 914.4 mm |
| Specialization | Large Diameter Sizes |
| Thickness / Schedules | SCH 20, SCH 30, SCH 40, STD, SCH 60, SCH 80, XS, SCH 120, SCH 140, SCH 160, XXS |
| Type | Seamless, ERW, Welded, Fabricated & LSAW Pipes |
| Form | Round, Square, Rectangular & Hydraulic |
| Length | Single Random, Double Random & Cut Length |
| Ends | Plain End, Beveled End & Threaded |
Grades & standards
- ASTM A312
- ASTM A213
- ASTM A269
- ASTM A249
- ASTM A358
Stainless Steel 309H Pipes for process, pressure and heat-transfer lines, available on MetalMitra in seamless, ERW and welded to ASTM A312, with mill-certified traceability on every lot.
SS 309H Pipes & Tubes designed for high-temperature service, oxidation resistance and demanding industrial process applications.
Stainless Steel 309H is a high-alloy austenitic stainless steel grade known for its elevated chromium and nickel content and its resistance to oxidation and high-temperature environments. It is commonly selected for furnace equipment, heat treatment systems, petrochemical plants, thermal processing and other high-temperature applications where the grade is suitable.
Why engineers choose it
- High-Temperature Performance — Suitable for selected elevated-temperature industrial services.
- Oxidation Resistance — High chromium content provides useful resistance to oxidation in elevated-temperature environments.
- Large Diameter Availability — Available in large diameter sizes for specialized industrial piping requirements.
- Multiple Product Forms — Seamless, ERW, welded, fabricated and LSAW options available.
SS 309H Pipes & Tubes Product Types
SS 309H Seamless Pipes — Suitable for demanding industrial and elevated-temperature piping applications.
SS 309H ERW Pipes — Available for industrial piping and fabrication requirements.
SS 309H Welded Pipes — Available in various sizes and customized configurations.
SS 309H LSAW Pipes — Large-diameter welded pipe option for specialized applications.
SS 309H Large Diameter Pipes — Suitable for large-scale industrial piping requirements.
SS 309H Hydraulic Tubes — Precision tubing for specialized engineering requirements.
Industries & Applications
- Furnace Equipment
- Heat Treatment
- Petrochemical
- Oil & Gas
- Power Generation
- Chemical Processing
- Refineries
- Thermal Processing
- Industrial Boilers
- Process Equipment
- Marine
- General Engineering
Other Stainless Steel 309H Products
SS 309H Pipes & Tubes · SS 309H Seamless Pipes · SS 309H ERW Pipes · SS 309H Welded Pipes · SS 309H LSAW Pipes · SS 309H Large Diameter Pipes · SS 309H Tubes · SS 309H Hydraulic Tubes
Inspection & paperwork
Suppliers on MetalMitra back Stainless Steel 309H Pipes with the checks and paperwork your QA team expects.
- Dimensional & visual inspection
- Grade verification against the order
- Positive Material Identification (PMI) as applicable
- EN 10204 3.1 Mill Test Certificate
- Third-party inspection (TPI) on request
Material properties
Chemical composition and mechanical properties are supplied to the limits of the governing material standard. Actual heat values are reported on the mill test certificate shared with each consignment.
The MetalMitra advantage
- Verified suppliers — Mills, manufacturers and stockists are reviewed by the MetalMitra team before they list.
- One RFQ, several quotes — Share size, grade and quantity once and compare offers side by side.
- Full traceability — Heat numbers, EN 10204 3.1 MTCs and third-party inspection on request.
- Delivered worldwide — Export-worthy packing and shipping to India, the Middle East, Africa, Europe and the Americas.
Get a quote
Tell us the specification, quantity and destination you need for Stainless Steel 309H Pipes. MetalMitra connects you with suppliers who can deliver.
Technical note: Values on this page are for reference. Always confirm against the governing standard, your purchase specification and the mill test certificate.
Testing & documents
Ask for the documents you need in your requirement — suppliers confirm them in their quotation:
- Mill test certificate to EN 10204 3.1, or 3.2 with third-party witness
- Third-party inspection (TPI) by SGS, Bureau Veritas, TÜV or your nominated agency
- Tests as the standard or your order requires: hydro, PMI, IGC, NDT, hardness or impact tests
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