304 Stainless Steel Seamless & Welded Pipe
Product Specifications
- Product Name: 304 Stainless Steel Pipe
- Type: Seamless Pipe / Welded Pipe
- Shape: Round
- Diameter: OD6 - 630mm
- Wall Thickness: SCH5, SCH10, SCH40, SCH80, SCH160 or custom as requested
- Length: 6m/pc or custom cutting as requested
- Standard: ASTM, DIN, EN, GB
- Main Grades: 304, 304L, 309S, 310S, 316L, 316Ti, 316LN, 317L, 321, 329, 347, 410, 2205, 2507, 904L, C276, etc.
- Company Type: Storage and Factory
- Service: Cutting, Polishing
Material Description
About 304/304L Stainless Steel
AISI 304 stainless steel (UNS S30400) is the most widely used stainless steel, containing 18-20% Cr and 8-10.5% Ni, also known as 18-8 stainless steel. SS 304 is non-magnetic under annealing conditions but may become weakly magnetic after cold working processes. Type 304 offers excellent resistance to atmospheric corrosion and oxidation, with its high nickel-chromium alloy content providing superior corrosion resistance, making it the standard food grade stainless steel in the food industry.
Variants include ultra-low-carbon 304L, nitrogen-containing 304N, creep-resistant 304H, and higher-carbon type 302. Compared to AISI 304, 316 stainless steel features reduced chromium, increased nickel, and added 2-3% molybdenum for enhanced resistance to pitting and crevice corrosion in chloride environments, making it ideal for marine applications.
Chemical Composition of 304 Stainless Steel
| Grade |
C |
Mn |
Si |
P |
S |
Cr |
Mo |
Ni |
N |
| 304 |
0.08 max |
2.0 max |
0.75 max |
0.045 max |
0.030 max |
18.0-20.0 |
- |
8.0-10.5 |
0.10 max |
| 304L |
0.030 max |
2.0 max |
0.75 max |
0.045 max |
0.030 max |
18.0-20.0 |
- |
8.0-12.0 |
0.10 max |
| 304H |
0.04-0.10 |
2.0 max |
0.75 max |
0.045 max |
0.030 max |
18.0-20.0 |
- |
8.0-10.5 |
0.10 max |
Mechanical Properties of 304 Stainless Steel
| Grade |
Tensile Strength (MPa) min |
Yield Strength 0.2% Proof (MPa) min |
Elongation (% in 50 mm) min |
Rockwell B (HR B) max |
Brinell (HB) max |
| 304 |
515 |
205 |
40 |
92 |
201 |
| 304L |
485 |
170 |
40 |
92 |
201 |
| 304H |
515 |
205 |
40 |
92 |
201 |
Product Gallery
Company Information
Our company is a professional stainless steel seamless tube manufacturing enterprise located in Wuxi city, China's stainless steel material distribution center. Situated just 100 kilometers from Shanghai port, we benefit from convenient transportation access.
We specialize in the sales and production of high-temperature (nickel base) alloys, austenitic, duplex steel, urea grade stainless steel, super stainless steel, and other series of steel tubes, coils, pipe fittings, flanges, and related products.
Our production capabilities include:
- Annual output of 25,000 tons of stainless steel seamless pipe
- 20,000 tons of welded pipe production line
- 5,000 tons of pipe fittings production line
We manufacture according to GB, ASTM, JIS, DIN and other standards, producing:
- Stainless steel seamless pipes: φ6 ~ φ762×0.5 ~ 70mm
- Stainless steel welded pipes: φ15 ~ φ2200×0.5 ~ 80mm
- Pipe fittings and related products
Main grades include TP321, TP316Ti, S32205, TP347H, TP316L, TP310S, TP304, TP304L, 321, S32750, 904L, C276, 254SMO and more.
With modern technology and equipment, plus the introduction of foreign advanced technology, we continuously strive for excellence, ensuring steadily rising product quality and establishing ourselves as one of the most competitive enterprises in the industry.
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