Stainless Steel Welded Pipe
1. Product Overview
We mainly produce stainless steel welded pipes of the A554 standard.ASTM A554 is a dedicated standard for stainless steel welded pipes for mechanical structures, customized for applications such as decoration, machining, equipment frames, hardware products, construction engineering, and pipeline structures. Made from high-quality stainless steel coils through high-frequency welding, the pipes feature uniform welds, smooth inner and outer surfaces, precise dimensions, and a sleek finish. They combine corrosion resistance, tensile strength, and aesthetics, and can meet the needs of secondary processing such as cutting, bending, drilling, and polishing.
2.Execution Standard
- Core Standard:ASTM A554 / A554M (American Standard)
- Applicable Types: Austenitic, ferritic stainless steel welded round pipes, square pipes, rectangular pipes, and special-shaped pipes
- Process Requirements: High-frequency resistance welding, online solution annealing, weld leveling, no cracks or sand holes
3.Comparison of Common Material Grades and Element Content
|
Material Grade
|
Main Element Content (%)
|
Surface Finish
|
Application Scenarios
|
|---|---|---|---|
|
201
|
C≤0.15, Cr: 16.0-18.0, Ni: 3.5-5.5, Mn: 5.5-7.5, N≤0.25
|
Brushed 180, 400#, 600#
|
Indoor decoration, general hardware, conventional structural parts
|
|
304
|
C≤0.08, Cr: 18.0-20.0, Ni: 8.0-10.5, Mn≤2.0, Si≤1.0
|
Brushed 180, 400#, 600#
|
Food-grade applications, indoor & outdoor decoration, equipment frames, general industry
|
|
316
|
C≤0.08, Cr: 16.0-18.0, Ni: 10.0-14.0, Mo: 2.0-3.0, Mn≤2.0
|
Brushed 180, 400#, 600#
|
Chemical industry, coastal environments, high-end equipment, corrosive scenarios
|
|
430
|
C≤0.12, Cr: 16.0-18.0, Ni≤0.75, Mn≤1.0, Si≤1.0
|
Brushed 180, 400#, 600#
|
Auto parts, home appliances, general structural parts, low-cost scenarios
|
4.Product Specification Range
（1）Pipe Shape：
Round welded pipes, square welded pipes, rectangular welded pipes, elliptical pipes, hexagonal pipes, customized special-shaped pipes
（2）Dimension Parameters：
- Outer Diameter/Side Length: 6.0mm～300mm (Customizable)
- Wall Thickness: 0.4mm～6.0mm
- Standard Length: 6m per piece, custom cutting (1–12m available)
- Tolerance: Wall thickness ±10%
5.Optional Surface Processes
- Industrial Finish: Original acid pickling, matte natural finish
- Decorative Finish: Sandblasted, brushed, bright finish, mirror 8K, titanium plating, black titanium, rose gold
- Special Treatment: Anti-fingerprint coating, passivation for rust prevention, precision polishing
6.Core Product Advantages
- ✅ Compliant with ASTM A554 standard, material tested by spectral analysis, quality traceable
- ✅ Seamless-level weld technology, flat and non-protruding welds, not easy to crack or deform
- ✅ Uniform density, high toughness, supports deep processing such as bending, rolling, and stamping
- ✅ Rust and oxidation resistant, acid and alkali resistant, high and low temperature resistant, long service life
- ✅ Precise dimensions and uniform wall thickness, strong installation adaptability
- ✅ Sufficient in-stock inventory, supports non-standard customization and urgent orders
7.Application Fields
- Architectural Decoration: Guardrails, handrails, doors and windows, curtain walls, landscape projects
- Mechanical Manufacturing: Equipment frames, fixtures, conveying equipment accessories
- Hardware Products: Furniture pipes, bathroom accessories, shelves, kitchenware components
- Industrial Equipment: Environmental protection equipment, medical devices, instrument casings
- Coastal/Chemical Industry: Structural pipelines and anti-corrosion frames in corrosive environments
8.Delivery & Service
- Quality Inspection: Factory water pressure test, weld flaw detection, material report, dimension inspection
- Packaging: Waterproof film + woven bag + wooden frame/carton to prevent scratches and deformation during transportation
- Customization: Non-standard dimensions, special wall thickness, special surface finish, cutting and drilling processing
- Documents: Material certification, ASTM A554 standard quality inspection report, customs declaration documents available
