Corrosion-Resistant, Weldable, Seamless Round Tube Seamless Stainless Steel Pipe
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Product Details
| After-sales Service: | Cutting |
|---|---|
| Warranty: | / |
| Type: | Seamless |
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Basic Info.
- Model NO.
- 304 Seamless Stainless Steel Pipe
- Technique
- Cold Drawn
- Material
- Stainless Steel
- Surface Treatment
- Polished
- Usage
- Food/Beverage/Dairy Products, Chemical Industry, Construction & Decoration
- Section Shape
- Round
- Material Grade
- 304 (Uns S30400)
- Standards
- GB, AISI, ASTM, DIN, En, JIS
- Size Range
- 1/4" (6mm) to 24" (600mm)
- Wall Thickness
- 0.5mm (0.02") to 12mm (0.47")
- Key Features
- Corrosion-Resistant, Weldable, High Ductility
- Tensile Strength
- ≥515 MPa (75,000 Psi)
- Yield Strength
- ≥205 MPa (30,000 Psi)
- Elongation (%)
- ≥40%
- Hardness (Rockwell B)
- ≤92 Hrb
- Length
- 1-12m
- Surface
- Ba/2b/No.1/No.3/No.4/8K/Hl/2D/1d
- Application
- Oil&Gas, Petroleum, Vessels, Ship Building, Water
- Surface Finish
- 2b
- Tolerance
- ±1%
- Material Series
- 300 Series
- Transport Package
- Standard Packing
- Specification
- 18%Cr-8%Ni
- Trademark
- Zhongding
- Origin
- China
- Production Capacity
- 2000tonnes Per Week
Product Description
304 stainless steel pipe is one of the most widely used austenitic stainless steel pipes due to its excellent corrosion resistance, formability, and cost-effectiveness
| Available Grades | 200 Series: 201,202 |
| 300 Series: 304, 304L, 304H, 309, 309S, 310, 310S, 316, 316L, 317, 317L, 321, 321H, 347, 347H | |
| 400 Series: 409, 410S, 416, 420, 430, 439, 440, 444, 446 | |
| Duplex and Others: 2205, 2507, S31803, S32205, S32750, S32760, 253MA, 254SMO, 904L etc |
Common Standards
| Standard | Application |
|---|---|
| ASTM A312 | Seamless & welded pipes for high-temperature/corrosive service |
| ASTM A269 | Seamless & welded tubes for general purposes |
| ASTM A213 | Seamless tubes for boilers & heat exchangers |
| ASTM A554 | Welded mechanical tubing (decorative/structural) |
| JIS G3459 | Japanese standard for stainless steel pipes |
| EN 10217-7 | European standard for pressure pipes |
Outer Diameter (OD) & Wall Thickness (WT)
| Type | Common Sizes (mm/inch) | Wall Thickness (mm/inch) |
|---|---|---|
| Small Diameter | 6mm (1/4") - 50mm (2") | 0.5mm (0.02") - 3mm (0.12") |
| Medium Diameter | 60mm (2.5") - 150mm (6") | 2mm (0.08") - 5mm (0.2") |
| Large Diameter | 200mm (8") - 600mm (24") | 4mm (0.16") - 12mm (0.47") |
Schedule (SCH) Thickness for Pipes (ASTM A312)
| Schedule (SCH) | Approx. Wall Thickness (mm/inch for DN50/NPS 2") |
|---|---|
| SCH 5S | 1.65mm (0.065") |
| SCH 10S | 2.11mm (0.083") |
| SCH 40S | 3.68mm (0.145") |
| SCH 80S | 5.56mm (0.219") |
Metric vs. Inch Size Comparison
| NPS (Inch) | DN (Metric) | Actual OD (mm) |
|---|---|---|
| 1/2" | DN15 | 21.3mm |
| 3/4" | DN20 | 26.7mm |
| 1" | DN25 | 33.4mm |
| 2" | DN50 | 60.3mm |
| 4" | DN100 | 114.3mm |
304 Stainless Steel Pipe Surface Finishes Comparison
| Finish | Process | Appearance | Roughness (Ra) | Corrosion Resistance | Cost | Typical Applications |
|---|---|---|---|---|---|---|
| 2B | Cold rolled + bright annealed + light polish | Smooth, semi-reflective | ≤0.3μm | Good | $$ | Food equipment, chemical pipes, general industry |
| BA | Bright annealed in hydrogen/vacuum | Highly reflective, near-mirror | ≤0.2μm | Excellent | $$$ | Medical, semiconductor, high-end decor |
| No.1 | Hot rolled + pickled | Rough, matte with mill marks | 3.2-6.3μm | Fair | $ | Structural, boilers, industrial pipes |
| HL (Hairline) | Mechanical brushing | Unidirectional satin lines | 0.4-1.0μm | Good | $$ | Elevators, appliances, architecture |
| No.4 | Uniform abrasive grinding | Consistent satin matte | 0.5-1.5μm | Good | $$ | Kitchen equipment, decorative panels |
| No.8 | Progressive polishing | Perfect mirror | ≤0.1μm | Best | $$$$ | Luxury decor, optical equipment |
| Electropolished | Electrochemical polishing | Ultra-smooth, bright | ≤0.05μm | Superior | $$$$$ | Pharma, semiconductor, ultra-clean systems |
304 Stainless Steel Pipe Applications
-
Food & Beverage Industry: Sanitary tubing, milk processing pipes.
-
Chemical Processing: Acid & alkali-resistant pipelines.
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Architecture & Decoration: Handrails, furniture, structural supports.
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Oil & Gas: Low-pressure fluid transport.
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Heat Exchangers & Boilers: High-temperature resistance.
1. who are we?
We are based in Zhejiang, China, start from 2020,sell to Africa(20.00%),Northern Europe(12.00%),Mid East(11.00%),Eastern
Asia(10.00%),North America(10.00%),Central America(8.00%),Eastern Europe(5.00%),Southeast Asia(5.00%),Oceania(5.00%),South
America(5.00%),South Asia(4.00%),Southern Europe(3.00%),Western Europe(2.00%). There are total about 101-200 people in our office.
2. how can we guarantee quality?
Asia(10.00%),North America(10.00%),Central America(8.00%),Eastern Europe(5.00%),Southeast Asia(5.00%),Oceania(5.00%),South
America(5.00%),South Asia(4.00%),Southern Europe(3.00%),Western Europe(2.00%). There are total about 101-200 people in our office.
2. how can we guarantee quality?
Always a pre-production sample before mass production;
Always final Inspection before shipment;
3.what can you buy from us?
Always final Inspection before shipment;
3.what can you buy from us?
Seamless steel pipe,Welded steel pipe,Hot rolled plate,Color steel plate,Round bar
4. why should you buy from us not from other suppliers?
4. why should you buy from us not from other suppliers?
Zhongding Steel is a diversified private enterprise with business covering stainless steel, carbon structure steel, alloy steel,etc. And established a number of joint-venture steel production lines with some well-known steel companies
5. what services can we provide?
Accepted Delivery Terms: FOB;
Accepted Payment Currency:USD,EUR,JPY,CAD,AUD,HKD,GBP,CNY,CHF;
Accepted Payment Type: T/T;
Language Spoken:English,Chinese,Spanish,Japanese,Portuguese,German,Arabic,French,Russian,Korean,Hindi,Italian
5. what services can we provide?
Accepted Delivery Terms: FOB;
Accepted Payment Currency:USD,EUR,JPY,CAD,AUD,HKD,GBP,CNY,CHF;
Accepted Payment Type: T/T;
Language Spoken:English,Chinese,Spanish,Japanese,Portuguese,German,Arabic,French,Russian,Korean,Hindi,Italian
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