


309 stainless steel pipe is a high-temperature resistant austenitic alloy with superior oxidation resistance and strength. It is widely used in environments where heat and corrosion resistance are critical.
Specification | Details |
---|---|
Material Grade | ASTM A312 / TP410 |
Outside Diameter | 6mm – 630mm or custom |
Wall Thickness | 0.5mm – 30mm or custom |
Length | 1m – 6m, or customized |
Surface Finish | Annealed, Polished, Pickled |
Standards | ASTM, ASME, JIS, EN, DIN |
Type | Seamless / Welded |
Shape | Round / Square / Rectangular |
Certification | ISO 9001, EN 10204 3.1 |
Production Process | Cold Drawn, Hot Rolled, ERW, Laser Welded |
End Type | Plain End, Beveled End, Threaded |
Delivery Time | 7–25 working days depending on order size |
MOQ | 1 ton (or negotiable) |
Payment Terms | T/T, L/C, Western Union |
Packaging | Standard export package (plastic caps, bundles, wooden cases) |
Inspection | PMI, Mechanical Test, Surface Quality Test, Dimensional Check |
Application | Oil & gas, petrochemical, mechanical engineering, construction, heat exchangers |
Chemical Composition
Element | Content (%) |
---|---|
Carbon (C) | ≤ 0.20 |
Manganese (Mn) | ≤ 2.00 |
Silicon (Si) | ≤ 1.00 |
Phosphorus (P) | ≤ 0.045 |
Sulfur (S) | ≤ 0.030 |
Chromium (Cr) | 22.0 – 24.0 |
Nickel (Ni) | 12.0 – 15.0 |
English Name | China GB/T | Japan JIS | USA AISI/UNS | Europe EN/DIN |
---|---|---|---|---|
Austenitic Stainless Steel 201 | 0Cr17Mn6Ni5N | SUS201 | AISI 201 / UNS S20100 | EN 1.4372 |
Austenitic Stainless Steel 202 | 0Cr18Mn9Ni6N | SUS202 | AISI 202 / UNS S20200 | EN 1.4122 |
Austenitic Stainless Steel 301 | 06Cr17Ni7 | SUS301 | AISI 301 / UNS S30100 | EN 1.4310 |
Austenitic Stainless Steel 303 | 0Cr17Ni13Mo | SUS303 | AISI 303 / UNS S30300 | EN 1.4305 |
Austenitic Stainless Steel 304 | 0Cr18Ni9 | SUS304 | AISI 304 / UNS S30400 | EN 1.4301 |
Austenitic Stainless Steel 304L | 06Cr19Ni10 | SUS304L | AISI 304L / UNS S30403 | EN 1.4307 |
Austenitic Stainless Steel 305 | 0Cr17Ni14Cu2 | SUS305 | AISI 305 / UNS S30500 | EN 1.4303 |
Austenitic Stainless Steel 309S | 00Cr23Ni13 | SUS309S | AISI 309S / UNS S30908 | EN 1.4828 |
Austenitic Stainless Steel 310S | 0Cr25Ni20 | SUS310S | AISI 310S / UNS S31008 | EN 1.4845 |
Austenitic Stainless Steel 316 | 0Cr17Ni12Mo2 | SUS316 | AISI 316 / UNS S31600 | EN 1.4401 |
Austenitic Stainless Steel 316L | 00Cr17Ni12Mo2 | SUS316L | AISI 316L / UNS S31603 | EN 1.4404 |
Austenitic Stainless Steel 316Ti | 00Cr17Ni12Mo2Ti | SUS316Ti | AISI 316Ti / UNS S31635 | EN 1.4571 |
Austenitic Stainless Steel 317 | 00Cr19Ni13Mo3 | SUS317 | AISI 317 / UNS S31700 | EN 1.4438 |
Austenitic Stainless Steel 321 | 00Cr19Ni10Ti | SUS321 | AISI 321 / UNS S32100 | EN 1.4541 |
Austenitic Stainless Steel 347 | 0Cr19Ni12Mo2Ti | SUS347 | AISI 347 / UNS S34700 | EN 1.4550 |
Austenitic Stainless Steel 904L | ZG0Cr19Ni25Mo4Cu2 | SUS904L | AISI 904L / UNS N08904 | EN 1.4539 |
Austenitic Stainless Steel 254SMO | ZG17Cr20Ni14Mo3Cu | SUS312L1 | AISI 254SMO / UNS S31254 | EN 1.4547 |
Ferritic Stainless Steel 409 | 0Cr11Mo | SUS409 | AISI 409 / UNS S40900 | EN 1.4512 |
Martensitic Stainless Steel 410 | 1Cr13 | SUS410 | AISI 410 / UNS S41000 | EN 1.4006 |
Martensitic Stainless Steel 420 | 0Cr17Ni4Cu4Nb | SUS420 | AISI 420 / UNS S42000 | EN 1.4021 |
Ferritic Stainless Steel 430 | 0Cr17 | SUS430 | AISI 430 / UNS S43000 | EN 1.4016 |
Ferritic Stainless Steel 439 | 0Cr18Mn11Nb | SUS439 | AISI 439 / UNS S43900 | EN 1.4517 |
Ferritic Stainless Steel 444 | 0Cr18Mn13Si | SUS444 | AISI 444 / UNS S44400 | EN 1.4521 |
Ferritic Stainless Steel 446 | 0Cr25Mo4N | SUS446 | AISI 446 / UNS S44600 | EN 1.4762 |
Martensitic Stainless Steel 416 | 0Cr13MoS4 | SUS416 | AISI 416 / UNS S41600 | EN 1.4005 |
Duplex Stainless Steel 2205 | ZG2CrNiMo | SUS329J4L | UNS S32205 | EN 1.4462 |
Duplex Stainless Steel 2304 | ZG0Cr23Ni5MoN | SUS329J1L | UNS S32304 | EN 1.4362 |
Precipitation Hardening Stainless 17-4PH | ZG0Cr17Ni4Cu4Nb | SUS630 | UNS S17400 | EN 1.4542 |
Martensitic Stainless Steel 431 | ZG1Cr17Ni2Mo | SUS431 | AISI 431 / UNS S43100 | EN 1.4057 |
309 stainless steel pipe is primarily used in high-temperature environments due to its excellent oxidation resistance and strength. Common applications include:
Heat exchangers and boilers – Withstands high thermal stress in industrial heating systems.
Furnace components – Ideal for radiant tubes, burner parts, and muffles in thermal processing.
Petrochemical equipment – Performs reliably in high-temperature and corrosive atmospheres.
Waste incinerators – Suitable for liners and structural parts exposed to intense heat.
Kilns and heat treatment equipment – Ensures long-term performance under fluctuating thermal cycles.
Thanks to its superior heat and corrosion resistance, 309 stainless steel pipe is widely chosen for applications requiring durability in aggressive environments.
To ensure product integrity and avoid any damage during handling and transportation, we provide professional and secure packaging for 309 stainless steel pipes:
Standard packaging: Pipes are wrapped with waterproof plastic film and packed in strong wooden cases or steel frames.
Customized labeling: Each bundle is labeled with detailed product information, including material grade, size, and heat number for easy identification.
Seaworthy protection: For export shipments, all packaging is compliant with seaworthy standards to resist moisture and mechanical damage.
Efficient logistics: We work with reliable freight partners to deliver your order safely and on time, whether by sea, land, or air.
Special care: End caps are used to protect pipe openings and prevent contamination during transit.
Our packaging approach ensures your 309 stainless steel pipes arrive in perfect condition, ready for immediate use.
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FAQ's
Do you provide product samples?
We can accept sample orders. Samples can be ordered by emailing your dedicated customer service representative.
What types of steel products do you offer?
We supply stainless steel sheets, coils, pipes, bars, profiles, as well as carbon steel and alloy steel materials in various grades and specifications.
Do you provide custom processing based on drawings
Yes. We support custom cutting, bending, flattening, polishing, and laser processing according to your drawings.
What is your minimum order quantity (MOQ)?
For standard stock items, small quantities are accepted. For customized products, MOQ usually starts from 1 ton. Please contact our sales team for specific details.
How long is your delivery time?
Standard products are typically delivered within 7working days. Custom orders generally require 7–15 working days depending on the specifications.
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Production
Scaled
Different factories support the production, forging and other process sites of different steel materials.

What You Need
Advanced & Modern
We have the advanced processing equipment, modernized physical and chemical testing center, opening flat, cutting, surface treatment, molding, sheet metal, welding. machining and 8 big processing platform.

Standardized
Export Packing
Waterproof paper, and steel strip packed. Seaworthy Package.Suit for all kinds of transport,or as required
Packing Standard export packing for stainless steel sheet.