1-12m Round Zhongding Round Seamless Stainless Steel Pipe 304

• After-sales Service: Cutting
• Warranty: /
• Type: Seamless
• 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

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

Detailed Photos

 

304 Stainless Steel Pipe Applications

• Food & Beverage Industry: Sanitary tubing, milk processing pipes.

• Chemical Processing: Acid & alkali-resistant pipelines.

• Architecture & Decoration: Handrails, furniture, structural supports.

• Oil & Gas: Low-pressure fluid transport.

• Heat Exchangers & Boilers: High-temperature resistance.

Packaging & Shipping

 

Company Profile

FAQ

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?

Always a pre-production sample before mass production;
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?

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