
Customization:
With AISI 316L stainless steel, ensure superior corrosion resistance in harsh industrial environments compared to standard 304 grades*. The alloy’s composition withstands chemical exposure and marine conditions, extending product longevity.
With ±1% tolerance, achieve precise fits in machinery and structural components*. This tight tolerance ensures seamless integration into high-precision applications like manufacturing equipment and load-bearing frameworks.
With multiple shapes (round, square, hexagonal) and diameters (4mm–20mm), adapt to diverse needs such as bolts, brackets, and load-bearing structures in construction and manufacturing. The hexagonal design, for instance, simplifies alignment in mechanical assemblies.
With welding, cutting, bending, and punching services, tailor dimensions and forms to meet specific project requirements*. Streamline workflows by reducing the need for third-party customization.
With AISI certification, guarantee material consistency and reliability for critical applications. The 2B surface finish ensures a smooth, corrosion-resistant exterior for both functional and aesthetic use cases.

Our stainless steel bars and rods, available in 4mm flat square, 7mm round, and hexagonal/triangular configurations, are crafted from AISI 316L and other 300-series grades. Designed for industrial and construction applications, these rods offer corrosion resistance, precision tolerance (±1%), and versatile surface finishing (2B). Customizable via cutting, welding, and bending services, they cater to diverse structural and mechanical needs.
| Feature | Specification | Benefit |
|---|---|---|
| Material Grade | Stainless Steel (316L, 304L, 304, etc.) | Superior corrosion resistance in harsh environments |
| Diameter Range | 4mm to 20mm | Scalable solutions for load-bearing demands |
| Surface Finish | 2B | Smooth, polished finish for aesthetic/functional use |
| Tolerance | ±1% | Precision engineering compatibility |
| Processing Services | Cutting, Punching, Bending, Welding | Customizable lengths/shapes for specific applications |
| Application | Industrial machinery, construction | Versatile for structural and mechanical parts |
Adjustable parameters include length, diameter, and surface finish to meet specialized needs. For example, a 7mm round rod can be tapered or threaded for pipe fittings, while hexagonal bars can be customized to fit hexagonal nuts/bolts.
Choose a square bar for stable mechanical joints in machinery or a hexagonal rod for torque-driven applications. The 316L grade ensures longevity in marine or chemical environments, while 2B finishing reduces friction in sliding components.
| Parameter | Base Model (304) | Advanced Model (316) | Pro Model (316Ti) |
|---|---|---|---|
| Corrosion Resistance | AISI 304 Standard | +30% vs. Base (AISI 316) | +50% vs. Base (AISI 316Ti) |
| Tensile Strength | 505 MPa | 570 MPa (+13%) | 620 MPa (+23%) |
| Processing Versatility | 4 services (cut/bend) | 6 services (+weld/decoil) | 8 services (+heat treat) |
Technical Breakthroughs:
Version Selection Guide:
With AISI 316L’s corrosion resistance, you can ensure durability in offshore platforms. With Pro Model’s 8 processing services, you can streamline assembly for custom machinery.
| Category | Usage Scenarios | Characteristics | Advantages | Disadvantages |
|---|---|---|---|---|
| Round Bar (4mm) | Automotive parts, small machinery | Diameter: 4mm (ISO 6892 compliant) Grade: 316L (ASTM A240: 1500h salt spray) Tolerance: ±1% (ISO 3294) | ▲ High precision for tight-fitting components Corrosion resistance ▲25% vs 304 | Higher cost for 316L grade Limited to small-scale applications |
| Round Bar (20mm) | Structural supports, pipelines | Diameter: 20mm (ISO 6892) Grade: 304 (ASTM A240: 1000h salt spray) Tolerance: ±1% | Cost-effective for large-scale projects Weldable (AWS A5.2) | Lower corrosion resistance vs 316L Heavier than thinner alternatives |
| Square Bar | Frameworks, tool handles | Cross-section: 4mm² (ASTM A36) Surface: 2B finish (ISO 8287) Customizable via cutting/punching | ▲ Structural stability for load-bearing designs Easy alignment in assemblies | Less common in non-industrial applications Higher material waste in shaping |
| Hexagonal Bar | Fasteners, mechanical joints | Hexagonal cross-section (ASTM F488) Grade: 301 (tensile strength: 1200 MPa) | ▲ Torque resistance for bolted connections Non-magnetic (ideal for electronics) | Specialized use cases only Higher machining costs for customization |
| 316L Grade | Marine, chemical plants | Corrosion resistance: 1500h salt spray (ASTM A240) Chloride resistance (ASTM G48) | ▲ Best-in-class for harsh environments Medical-grade compatibility (ISO 5832) | 20% costlier than 304 Lower thermal conductivity vs 304 |
| 304 Grade | Food equipment, HVAC systems | Corrosion resistance: 1000h salt spray (ASTM A240) Surface: 2B finish (ISO 8287) | Cost-effective for general use Widely available (ISO 9001 certified) | Susceptible to chloride corrosion Lower strength vs 316L |
⭐⭐⭐⭐⭐ James Carter - Mechanical Workshop Owner
"We’ve been using the 7mm round 316L rods for custom machinery frames, and the precision is outstanding. The ±1% tolerance means less post-processing, and the corrosion resistance has held up perfectly in our humid workshop environment. We also used their on-site welding and bending services, which saved us weeks in lead time. These rods are now our go-to for load-bearing components."Purchase Date: February 2025 | Usage Period: 5 months
⭐⭐⭐⭐⭐ Elena Martinez - Structural Engineer, Coastal Infrastructure Project
"For a seawater-exposed railing system, we needed something better than standard 304. The 316L flat square bars (4mm) delivered exactly what was promised—zero signs of pitting after 8 months in a high-salinity environment. The 2B finish also gave a clean, professional look without additional polishing. The supplier’s team helped us customize lengths, which streamlined installation significantly."Purchase Date: July 2024 | Usage Period: 8 months
⭐⭐⭐⭐☆ David Lin - Home Workshop Hobbyist
"I ordered a batch of 20mm hexagonal rods for a custom bike rack and some tool handles. The material feels premium, and the non-slip grip of the hex shape works great. I was surprised how easy they were to cut and weld at home with basic tools. Only reason I didn’t give 5 stars is that the minimum order quantity is a bit high for small personal projects.">
Purchase Date: November 2024 | Usage Period: 6 months
⭐⭐⭐⭐⭐ Thomas Reed - Plant Maintenance Supervisor
"We replaced our old 304 support rods with the Pro Model 316Ti round bars (12mm) in our chemical processing line. After 7 months of continuous exposure to acidic vapors, there’s no corrosion—unlike our previous supplier’s bars, which degraded in under 4 months. The 620 MPa tensile strength gives us confidence in load safety, and the 8 included processing services allowed us to get pre-threaded, bent sections delivered ready-to-install."Purchase Date: April 2025 | Usage Period: 4 months
⭐⭐⭐⭐⭐ Fiona Patel - Marine Fabricator
"Building stainless components for yachts demands top-tier materials. The AISI 316L hexagonal and square bars have become our standard. We’ve used them for cleats, hinge pins, and rail fittings—no rust, no warping, even after prolonged saltwater exposure. Their decoiling and punching service was a game-changer for batch production. Worth every penny for marine-grade reliability."Purchase Date: September 2024 | Usage Period: 7 months
Average Rating: 4.9/5 ⭐ (94 Reviews)
Dr. Alan Zhou - Corrosion & Metallurgy Consultant
"In aggressive environments—especially marine and chemical processing—AISI 316L stainless steel rods are the benchmark for durability. This product line exceeds standard ASTM A240 requirements with 1500-hour salt spray resistance and tight ±1% dimensional control. For critical applications, the 316Ti Pro Model offers exceptional performance, particularly where thermal cycling and high stress coexist."
Lena Brooks - Senior Fabrication Designer
"What sets this product apart is the end-to-end customization. From precise diameter control to in-house welding and bending, it eliminates the need for third-party machining. I’ve specified these rods in multiple industrial builds—from conveyor systems to architectural railings—and they consistently deliver reliability and finish quality."
Posted: 2 days ago
"Using the 4mm round 316L rods for robotic arm joints. The tight tolerance ensures perfect fit in bearings. No grinding or rework needed. Highly recommend for precision engineering."
Posted: 1 week ago
"Switched from 304 to 316L for a piping support upgrade. After 5 months in a corrosive zone, no degradation. The supplier’s technical team even helped us select the right diameter for load specs."
Posted: 3 weeks ago
"Used square and hexagonal bars for outdoor sculptures. The 2B finish looks clean, and the corrosion resistance keeps them looking new. Slight delay in delivery, but product quality made up for it."
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