Stainless Type 304, 316, And 409 Pipe in Stock

In industrial and structural piping systems, stainless steel pipe remains the material of choice due to its advantages such as corrosion resistance, mechanical strength, and long service life. Gnee maintains a large inventory of 304, 316, and 409 stainless steel pipes in both seamless and welded forms, conforming to ASTM A312/A213/A268 standards, ensuring fast delivery and quality assurance for all major industries.

 

What's the difference between 304, 316, and 409 stainless steel pipes?
304 is the most common for industrial use, 316 offers better corrosion resistance (especially against chlorides), while 409 is more economical for high-temperature and automotive exhaust applications.

 

Stainless Type 304, 316, and 409 Pipe in Stock

Grade	Standard	Type	Outer Diameter (OD)	Wall Thickness	Surface Finish	Application
304 / 304L	ASTM A312 / A213	Seamless / Welded	6 – 508 mm	0.5 – 25 mm	2B, BA, Polished, Pickled	Food processing, chemical piping, architectural structures
316 / 316L	ASTM A312 / A249	Seamless / Welded	6 – 406 mm	0.5 – 20 mm	Pickled & Annealed, Mirror Polished	Marine, pharmaceutical, heat exchanger, oil & gas
409 / 409L	ASTM A268	Welded	12 – 508 mm	0.8 – 16 mm	No.1 / 2B / Polished	Automotive exhaust, heat-resistant ducts, furnace tubing

All pipes comply with ASTM A312 / A268 / A249 / A554 standards and are available with ISO, SGS, BV certifications.

 

Chemical composition and mechanical properties of Stainless Type 304, 316, and 409

Property	Type 304	Type 316	Type 409
Chemical Composition (%)	C ≤ 0.08, Cr 18–20, Ni 8–10.5	C ≤ 0.08, Cr 16–18, Ni 10–14, Mo 2–3	C ≤ 0.03, Cr 10.5–11.75, Ni ≤ 0.5, Ti stabilized
Density (g/cm³)	7.93	7.98	7.7
Tensile Strength (MPa)	≥ 515	≥ 515	≥ 380
Yield Strength (MPa)	≥ 205	≥ 205	≥ 170
Elongation (%)	≥ 40	≥ 40	≥ 20
Corrosion Resistance	Excellent (general)	Superior (chloride environments)	Good (mild corrosion)
Temperature Resistance	Up to 870 °C	Up to 925 °C	Up to 675 °C
Magnetism	Non-magnetic	Non-magnetic	Slightly magnetic

 

Stainless Type 304, 316, and 409 Pipe Price per kg Reference (November 2025)

Grade	Type	Price Range (USD/kg)	Remarks
Stainless 304 Pipe	Seamless	$5.50 – $6.30	For general use
Stainless 316 Pipe	Seamless	$6.80 – $8.00	Marine-grade corrosion resistance
Stainless 409 Pipe	Welded	$2.80 – $3.60	Automotive & exhaust systems

Prices vary depending on wall thickness, surface finish, and order volume. Contact Gnee for volume discounts and CIF quotations.

 

If you are looking for a reliable supplier of 304, 316, or 409 stainless steel pipes, GNEE has over 18 years of experience exporting stainless steel. We maintain a stock of over 1000 tons of 304, 316, and 409 stainless steel. Short delivery times: 7-15 days. ISO, SGS, and BV certified, compliant with ASTM A312/A268 standards. Worldwide shipping available to North America, Europe, and Southeast Asia. Contact Gnee today for a free quote or customized project solutions. In stock, ready to ship!Email: sales@gneestainless.com