Direct Factory Supply of Premium Stainless Steel Round, Square, Hexagonal, and Flat Bars. Specializing in High-Precision Cold-Drawn Bars (h9, h10, h11 Tolerances) and Heavy Forged Rods. 100% Internal Defect-Free.
As an elite, fully integrated stainless steel bar and rod manufacturer in China, we supply international standard bars engineered for high-speed CNC machining, forging, and heavy structural applications. From commercial 304/316L to high-wear martensitic (410/420/440C) and duplex grades, our bars feature unmatched straightness, precise dimensional consistency, and excellent machinability.
Execution Standards: ASTM A276, ASTM A484, ASTM A582 (Free-Machining), JIS G4303
Shapes Available: Round, Square, Hexagonal, Flat, and Custom Profiles
Profile Shape
Manufacturing Method
Size Range (Diameter / Width)
Available Tolerances
Images
Stainless Steel Round Rod
Cold Drawn / Centerless Ground / Hot Rolled
2.0mm – 500mm
h8, h9, h11, ASTM A484
Stainless Steel
Square
Cold Drawn / Hot Rolled
4mm x 4mm – 150mm x 150mm
h11, h12
Stainless Steel
Hexagonal
Cold Drawn / Hot Rolled
Hex 4mm – Hex 100mm
h11, h12
Stainless Steel
Flat
Cold Drawn / Slit from Plate / Hot Rolled
Thickness: 2mm–40mm | Width: 10mm–200mm
Custom Tolerances




Elite Machinability & Threading: Strict control over chemical composition and inclusion morphology saves tool wear on your CNC automatic lathes and increases production speed by up to 15%.
Premium Straightness: Processed via multi-roll precision straightening machines, guaranteeing straightness up to $0.5\text{mm}/\text{m}$ to prevent vibration during high-speed machining.
No Internal Defect Risks: Zero center burst, internal cracks, or porosity—perfect for safety-critical automotive, hydraulic, and aerospace components.
Precision Machining: CNC turned parts, shafts, fasteners, screws, bolts, and valves.
Pump & Hydraulics: High-straightness pump shafts, piston rods, and marine propeller shafts.
Tools & Utensils: Industrial blades, surgical instruments, kitchenware components, and food machinery axles.
We deliver ready-to-machine steel directly to your production line:
Surface Finishes: Cold Drawn (Bright/Smooth), Centerless Ground (Polished h9), Peeled & Turned, Black Hot Rolled, Rough Machined.
Precision Cutting: High-speed band saw cutting for exact length billets with zero end deformation.
Heat Treatment: Solution Annealed, Quenched & Tempered (Q+T for 400 series), Stress Relieved.
Trusted Stainless Steel Manufacturer, Customization, Free Samples, Factory Visits Anytime—Inquire Now!
Manufacturing Equipment: Combined drawing lines, centerless grinding machines, heavy hydraulic peeling lines, and atmospheric heat treatment furnaces.
Standing Inventory: 8,000+ tons of common grades (304, 316L, 303 free-cutting, 430F) in stock for instant packing and shipping.
100% Ultrasonic Testing (UT): Internal defect detection applied to heavy forged and rolled rods to guarantee zero inner voids.
Eddy Current & Crack Inspection: Continuous surface defect monitoring for critical bright bars.
Certified Certification: Genuine EN 10204 3.1 MTC tracking chemistry and mechanical properties (tensile, yield, hardness).
Anti-Scratch Protection: Every single precision ground/bright bar is sleeved in individual plastic tubing or wrapped in protective oil-paper.
Rigid Wooden Bundling: Securely fastened into solid fumigated wooden boxes or heavy steel-reinforced crates to prevent bending during forklift loading.
Global Shipping: Fully experienced in FOB, CIF, DDU, and door-to-door DDP operations.
Q: Can you supply h9 tolerance centerless ground bars for Swiss-type automatic CNC lathes?
A: Yes. Our centerless grinding and polishing lines consistently deliver h8 and h9 diameter tolerances with excellent ovality control, perfectly suited for high-speed Swiss-type CNC setups.
Q: What is your solution for high-hardness requirements on 420 or 440C stainless steel rods?
A: We provide customized Quenched & Tempered (Q+T) heat treatment in-house to achieve your exact required HRC/HB hardness profile before final machining.
Wuxi Xinshanhu Steel Co., Ltd. is a Chinese stainless steel manufacturer existing for eleven years with rich production experience, well-trained workers and excellent engineers, Our factory has a mature production system with several steel production lines, including a high-precise acid continuous rolling line, a cold plate production line; a high-precise metal sheet flattening line; a high-precise metal sheet rewinding and tension straightening line; a metal sheet cutting and distribution line; High precision sheet rewinding and tension straightening lines; sheet cutting and assembly lines. Our products include various stainless steel plates, stainless steel tubes, stainless steel bars, stainless steel strips, stainless steel coils, stainless steel angles, stainless steel flat bars, stainless steel profiles, stainless steel wires, etc.
Our company’s processing center is located in Wuxi, Jiangsu, China. It is well equipped with kinds of machines, such as laser cutting machine, mirror polishing machine and so on. We can provide a wide range of personalized services according to the customers’needs.
Our main products are stainless steel plate/sheet, coil, round/square pipe, bar, channel, etc.
Mill Test Certification is supplied with shipment, Third Party Inspection is available.
We have many professionals, technical personnel, more competitive prices, and best after-sales service than other stainless steel companies.
Exported to more than 50 countries mainly from America, Russia, UK, Kuwait, Egypt, Turkey, Jordan, India, etc.
Manufacturing Equipment: Combined drawing lines, centerless grinding machines, heavy hydraulic peeling lines, and atmospheric heat treatment furnaces.
Standing Inventory: 8,000+ tons of common grades (304, 316L, 303 free-cutting, 430F) in stock for instant packing and shipping.
100% Ultrasonic Testing (UT): Internal defect detection applied to heavy forged and rolled rods to guarantee zero inner voids.
Eddy Current & Crack Inspection: Continuous surface defect monitoring for critical bright bars.
Certified Certification: Genuine EN 10204 3.1 MTC tracking chemistry and mechanical properties (tensile, yield, hardness).
Anti-Scratch Protection: Every single precision ground/bright bar is sleeved in individual plastic tubing or wrapped in protective oil-paper.
Rigid Wooden Bundling: Securely fastened into solid fumigated wooden boxes or heavy steel-reinforced crates to prevent bending during forklift loading.
Global Shipping: Fully experienced in FOB, CIF, DDU, and door-to-door DDP operations.
Q: Can you supply h9 tolerance centerless ground bars for Swiss-type automatic CNC lathes?
A: Yes. Our centerless grinding and polishing lines consistently deliver h8 and h9 diameter tolerances with excellent ovality control, perfectly suited for high-speed Swiss-type CNC setups.
Q: What is your solution for high-hardness requirements on 420 or 440C stainless steel rods?
A: We provide customized Quenched & Tempered (Q+T) heat treatment in-house to achieve your exact required HRC/HB hardness profile before final machining.
Wuxi Xinshanhu Steel Co., Ltd. is a Chinese stainless steel manufacturer existing for eleven years with rich production experience, well-trained workers and excellent engineers, Our factory has a mature production system with several steel production lines, including a high-precise acid continuous rolling line, a cold plate production line; a high-precise metal sheet flattening line; a high-precise metal sheet rewinding and tension straightening line; a metal sheet cutting and distribution line; High precision sheet rewinding and tension straightening lines; sheet cutting and assembly lines. Our products include various stainless steel plates, stainless steel tubes, stainless steel bars, stainless steel strips, stainless steel coils, stainless steel angles, stainless steel flat bars, stainless steel profiles, stainless steel wires, etc.
Our company’s processing center is located in Wuxi, Jiangsu, China. It is well equipped with kinds of machines, such as laser cutting machine, mirror polishing machine and so on. We can provide a wide range of personalized services according to the customers’needs.
Our main products are stainless steel plate/sheet, coil, round/square pipe, bar, channel, etc.
Mill Test Certification is supplied with shipment, Third Party Inspection is available.
We have many professionals, technical personnel, more competitive prices, and best after-sales service than other stainless steel companies.
Exported to more than 50 countries mainly from America, Russia, UK, Kuwait, Egypt, Turkey, Jordan, India, etc.