304 Stainless Steel Pipe Welded Round Tube Mirror Polished for Construction and Architecture

• Customization: Available
• Type: Welded
• Technique: Cold Rolled
• Model NO.: Stainless Steel Pipe
• Material: Stainless Steel
• Surface Treatment: Polished
• Usage: Pipeline Transport, Boiler Pipe, Hydraulic/Automobile Pipe, Oil/Gas Drilling, Food/Beverage/Dairy Products
• Section Shape: Round
• Manufacturing Method: Cold Rolled, Hot Rolled
• 200 Series: 201, 202
• 300 Series: 301, 304, 304L, 316, 316L, 310, 317, 321
• 400 Series: 409, 410, 420, 430, 436, 444, 441, 440c
• Duplex Steel: 904L, 2205, 2507, 2101, 2520, 2304
• Diameter: φ 6mm-630mm, Customize.
• Thickness: 0.5mm-40mm
• Length: 6000mm, Customize.
• Surface: Primary, Bright Polished, Hairline, Mirror
• Shapes: Round, Square, Rectangular, Oval
• Seam: Seamless, Welded (ERW, Efw, Spiral Welded)
• Sample: Available
• MOQ: 1tons
• Transport Package: Standard Sea-Worthy Packing
• Origin: Chongqing
• HS Code: 73064000
• Production Capacity: 50000

Product Description

Product Specifications

Item	Description Details
Product Name	Stainless Steel Pipe / Stainless Steel Tube
Product Type	Seamless Pipe (SMLS), Welded Pipe (ERW / EFW), Precision Tube, Decorative Tube
Available Grades	300 Series: 304, 304L, 316, 316L, 316Ti, 309S, 310S, 317, 317L, 321, 347, 347H, 304N, 316N
	200 & 400 Series: 201, 202, 410, 420, 430
	Duplex Steel: S31803, S32205, S32750 (Austenitic / Ferritic / Martensitic / Duplex / Super Duplex)
Standards	ASTM: A213, A312, A269, A778, A789 EN/DIN: EN 10216, DIN 17456, 17457, 17459 JIS / GOST / GB: JIS G3459, JIS G3463, GOST 9941, BS 3605, GB/T 13296
Outer Diameter (OD)	6 mm – 2500 mm (Custom sizes available)
Wall Thickness (WT)	1 mm – 150 mm
Length	6000 mm / 12000 mm, or Custom Lengths as requested
Surface Finish	Pickled & Acidified, Bright Annealed (BA), Polished (Grit 180, 240, 320, 400, Mirror), Satin
Delivery Time	Within 7–15 Working Days (Depending on stock and order volume)

Product Details

Rectangular Pipe / Tube Specifications

Square Pipe / Tube Specifications

Round Pipe / Tube Specifications

Side Size (High x Width): 10mm x 20mm to 200mm x 400mm
Wall Thickness (WT): 0.5 mm to 12.0 mm
Common Sizes: 10x20mm, 13x25mm, 15x30mm, 20x40mm, 25x50mm, 30x60mm, 40x60mm, 40x80mm, 50x100mm, 60x120mm, 100x150mm, 100x200mm

Side Size (Width x Thickness): 10mm x 10mm to 300mm x 300mm
Wall Thickness (WT): 0.5 mm to 12.0 mm
Common Sizes: 12x12mm, 15x15mm, 19x19mm, 20x20mm, 25x25mm, 30x30mm, 38x38mm, 40x40mm, 50x50mm, 60x60mm, 80x80mm, 100x100mm

Outer Diameter (OD): 6.0 mm to 508.0 mm (or 1/8 inch to 20 inch)
Wall Thickness (WT): 0.5 mm to 30.0 mm
Common Sizes (OD): 9.5mm, 12.7mm, 15.9mm, 19.1mm, 22.2mm, 25.4mm, 31.8mm, 38.1mm, 50.8mm, 63.5mm, 76.2mm, 88.9mm, 101.6mm

Standard Length

6000 mm (6 meters) / 5800 mm (for 20GP container loading) / Customized Lengths

How to Choose the Right Stainless Steel Pipe

Choosing the perfect stainless steel tube depends entirely on your specific project requirements. For high-pressure, high-temperature, or extreme environments like petrochemical plants and boilers, Seamless Steel Pipes are the safest choice due to their leak-free, seamless structure. If your project demands high dimensional accuracy, uniform wall thickness, and cost-effectiveness for low-to-medium pressure fluid transport or structural engineering, a Welded Pipe is the most ideal option. For projects focused primarily on appearance and surface aesthetics—such as handrails, furniture, and architectural decoration—go with a Decorative Pipe, which offers precise sizing and premium finishes like satin, hairline, or mirror polished.

Manufacturing Process at a Glance

Raw Material and Smelting: Steel Smelting, Refining, CCM (Continuous Casting Machine), Rolling Round Billet.

Billet Preparation and Heating: Billet Inspection, Billet Saw and Cut, Billet Heating.

Hot Rolling and Piercing: Piercing, Assel Rolling (A-R Rolling), Reheating, Slight-Stretch Reduction, Cooling.

Finishing and Straightening: Straightening, Blow the Dust, Cutting Ends, Size and Surface Examination.
Rigorous Testing and Quality Control: NDT (Non-Destructive Testing), Hydraulic Test, Drifting, Marking, Weighing.
Packing and Logistics: Packing, Warehousing, Safe Transport.

Certifications

Quality Inspection

Product Application

Factory Show

Packing & Delivery

FAQ

1. Can I get the latest price list?

 Yes. Stainless steel prices change frequently with raw material costs. Please send us your required grade, size, and quantity, and we will provide a competitive factory quotation within 12 hours.

2. How do you ensure product quality?

 All pipes strictly follow international standards (ASTM, DIN, EN, JIS). We provide Mill Test Certificates (MTC), perform chemical and mechanical testing, and fully welcome third-party inspections like SGS or BV.

3. What sizes can you produce?

Outer Diameter: 6mm to 2500mm
Wall Thickness: 1mm to 150mm
Length: 6m, 12m, or customized lengths We can also manufacture special shapes and sizes according to your technical drawings.

4. What is your minimum order quantity (MOQ)?

Our standard MOQ is 1 ton. However, small trial orders are highly welcomed for new customers to test our quality and service first.

5. How fast can you deliver?

Stock Sizes: 7 to 10 days (for common grades like 304 and 316L)

Custom Production: 15 to 20 working days Urgent schedules can be coordinated upon request.

6. Can you customize stainless steel pipes?

 Yes. We offer full OEM services, including custom sizes, specific material grades, precise cut-to-length options, and various surface finishes (satin, hairline, mirror polished).