Wholesale Industrial Stainless Steel Square Pipe | Structural Strength | Factory Direct Price
Thickness：0.4mm~6.0mm
Width：150*150mm
Length：5*5m
Surface：BA，2B，NO.1，NO.4，4K，HL，8K
Standard：ASTM，AISI，JIS,GB， DIN,EN
Products can be customized
Email: [email protected]
WhatsApp/WeChat/Mobile：+86-18753135285
Stainless steel square tube performance parameters
| Product Name | Stainless steel square pipe |
|---|---|
| Material | 201, 302, 303, 303Cu, 304, 304L, 304H, 310S, 316, 316L, 317L, 321, 310S,309S, 410, 410S, 420, 430, 431, 440A, 904L |
| Model | 5*5~150*150 mm Thickness: 0.4~6.0 mm |
| Standard | GB6728-2002, JISG3466-88, ASTM, DIN, EN, AISI |
| Place of Origin | Shandong, China |
| Delivery time | 7-15 days |
| Surface finishing | 2B, 2D, No. 1, No. 4, BA, HL, 6K, 8K, polishing, annealing, pickling, bright, etc. |
| Production process | a. round steel preparation; b. heating; c. hot rolling perforation; d. cutting head; e. pickling; f. grinding; g. lubrication; h. cold rolling; i. Degreasing; j. Solution heat treatment; k. Straightening; l. Pipe cutting; m. Pickling; n. Finished product inspection. |
| Certificate | ISO9001,SGS,CE |
| Supply capacity | 20,000 tons/year |
| MOQ | 1 ton |
| Trade Terms | FOB, CIF, CFR, EXW, FCA, FAS, etc. |
| Payment | TT, LC, We can negotiate |
| Tests | squash test, extension test, hydrostatic test, crystal decay test, heat resistance |
| Application | Uses include construction, machinery manufacturing, steel construction and other projects, shipbuilding, solar power brackets, steel structure engineering, power plants, agricultural and chemical machinery, glass curtain walls, automobile chassis, airports, boiler construction, highway railings, housing construction, pressure vessel, oil storage tanks, bridges, power station equipment, lifting and transportation machinery and other welded structural parts with higher loads, etc. |
Advantages of Our Stainless steel square tube
Exceptional Structural Stability and Torsional Strength
Our stainless steel square tubes are manufactured using high-standard cold-drawing or cold-rolling processes, ensuring exceptional geometric stability. Compared to round pipes, square tubing provides a higher section modulus in structural applications, offering superior torsional resistance and load-bearing capacity. This makes them the ideal choice for high-rise architectural supports, heavy machinery frames, and industrial platform construction.
Long-lasting Aesthetic Value with Premium Surface Finishes
We offer industry-leading surface treatments for our ornamental stainless steel square tubes. Whether it is a fine Satin/Hairline finish or a highly reflective 8K Mirror finish, we guarantee consistent luster and texture on all four sides. Combined with our unique passivation technology, the surface is not only aesthetically pleasing but also highly resistant to fingerprints and staining, maintaining a pristine look for years in high-end decorative projects.
Superior Corrosion Resistance and Low Life-cycle Maintenance
Crafted from premium stainless steel with high Nickel and Chromium content, our tubes exhibit outstanding oxidation and chemical corrosion resistance. Even when installed in coastal areas, humid environments, or industrial sites with corrosive gases, the square pipes effectively resist rusting and pitting. This extreme durability means minimal need for costly painting or maintenance over decades, significantly reducing the total life-cycle cost for clients.
Packaging style of Stainless steel square tube
FAQs
Are the welds on your square tubes strong enough? Will they crack during bending or flaring?
We use advanced automated TIG or Laser welding to ensure full penetration and uniform welds. All tubes undergo online pressure testing and offline mechanical tests to ensure no cracking at the weld seam during 90-degree bending, necking, or flaring processes.
What is the R-angle (radius) of your square tubes? Can you achieve a sharp-corner effect?
We can adjust the R-angle based on your requirements. Typically, the R-angle is maintained between 1.0 to 1.5 times the wall thickness for structural integrity. For specific aesthetic needs, we can also produce sharp-corner square tubes using precision tooling.
How do you guarantee the straightness of long square tubes? Will there be any twisting during large-scale frame assembly?
Every tube undergoes a precision straightening process before leaving the factory. We control straightness tolerance within 1mm/m and strictly limit the twist. This ensures you won’t need manual correction during the assembly of large structures or long railing systems.
For mirror or brushed tubes, how do you prevent surface scratches and transport damage?
We implement individual piece packaging for decorative tubes. Each tube is laminated with protective film (brand specified by you) and sleeved in plastic or woven bags. Reinforced wooden crates or steel frames are used for the outer layer to minimize crushing and scratches during handling.
What is your tolerance range for side length and wall thickness?
For standard industrial tubes, we follow ASTM A554 standards. Side length tolerance is typically within ±0.2mm to ±0.5mm (depending on size), and wall thickness within ±10%. For higher precision needs, we can further tighten the tolerances through precision cold-drawing processes.
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