OEM Welded Square 304 Stainless Steel Tubing Pipe For Home Industrial Projects

Upgrade your projects with our high-grade stainless steel square tubes, designed for both durability and versatility. These tubes are crafted from corrosion-resistant 304 stainless steel, ensuring long-lasting performance in demanding environments. With a sleek, polished finish, they offer both structural integrity and aesthetic appeal. Whether you’re constructing furniture, railings, frames, or machinery parts, these square tubes provide the strength and reliability needed for professional results.

Ideal for DIY enthusiasts and industrial professionals alike, these tubes are easy to cut, weld, and customize. Their uniform shape and smooth edges make them safe to handle and simple to integrate into any design. Resistant to rust, heat, and wear, they perform exceptionally in indoor and outdoor settings, from home workshops to heavy-duty industrial sites.

Choose our stainless steel square tubes for a seamless blend of functionality and style. Enhance your creations with a material that stands the test of time and meets the highest standards of quality.

The production of colored stainless steel sheets via PVD (Physical Vapor Deposition) involves three core stages: pre-treatment, PVD coating deposition, and post-treatment, with strict parameter control throughout.

This stage ensures a clean, smooth surface for coating adhesion.

Cutting & Polishing: Cut stainless steel coils/plates to required dimensions via laser or shearing. Polish with abrasive belts/wheels to achieve finishes like mirror, brushed, or matte, and remove minor scratches.

Cleaning: First, degrease with alkaline/solvent solutions to eliminate oil and fingerprints. Then, pickle with nitric-hydrofluoric acid to remove oxide layers and polishing residues. Finally, rinse with deionized water and dry with hot air/infrared to avoid water spots.

Completed in a high-vacuum chamber to ensure coating quality.

Vacuum Setup: Load dried substrates into the chamber, then pump to 10⁻³–10⁻⁵ Pa (high vacuum). Heat substrates to 150–300°C and use argon ion bombardment for deep cleaning.

Target Sputtering & Reaction: Select targets based on color (e.g., titanium for gold, chromium for silver). Use magnetron sputtering (plasma bombards targets to release atoms) or arc ion plating (electric arc melts targets) to vaporize targets. Introduce reactive gases (nitrogen for nitrides, oxygen for oxides); target atoms react with gases to form colored compound films (e.g., TiN for rose gold) on substrates.

Thickness Control: Monitor via a quartz crystal sensor to keep coating thickness at 0.1–1 μm (too thin = poor fastness; too thick = brittleness).

This stage enhances performance and ensures compliance.

Cooling & Finishing: Cool the chamber to room temperature, release vacuum, and unload. Optionally, lightly polish coated surfaces for better gloss.

Quality Checks: Test coating hardness (≥2000 HV via Vickers tester) and adhesion (no peeling via cross-cut tester). Use a spectrophotometer to verify color consistency (ΔE ≤ 1 vs. standards).

Packaging: Wrap qualified sheets in anti-scratch film, then pack in cartons/wooden pallets for transport.

Crafted from premium-grade stainless steel, our square tube delivers unmatched durability and corrosion resistance, making it ideal for both indoor and outdoor applications. Whether you’re reinforcing a home renovation or assembling heavy-duty industrial equipment, its robust structure withstands extreme temperatures, moisture, and mechanical stress without warping or rusting. The smooth, brushed finish not only enhances aesthetic appeal but also simplifies cleaning and maintenance, ensuring long-term performance with minimal upkeep.

Engineered for precision and versatility, this square tube features uniform dimensions and tight tolerances, allowing seamless integration into custom frameworks, shelving units, railings, and machinery. Its modular profile supports easy cutting, welding, and fastening, empowering DIY enthusiasts and professional fabricators alike to execute complex projects with confidence. The material’s inherent strength-to-weight ratio reduces structural load while maintaining integrity, making it a smart choice for architectural, automotive, and marine environments.

Backed by rigorous quality control and industry-standard certifications, our stainless steel square tube guarantees consistent reliability across diverse conditions. From sleek modern furniture to rugged industrial scaffolding, it combines functionality with timeless elegance. Stocked in multiple sizes and readily available for quick shipment, it’s the go-to solution for builders and designers seeking efficiency, longevity, and professional-grade results — without compromise.