Flat Bar

High Precision Cold Drawn Steel Flat Bar

Material

304310316430101810201045414051205140A36

Tolerance

h9h11+/-0.05mm

Surface Finish

cold_drawn_bright

Minimum Order

1 tons - Contact us for smaller quantities

Specifications

Parameter Details
Product Name Cold Drawn Steel Bar / Cold Drawn Special Shaped Steel Bar
Material / Grade Carbon Steel: A36, 1018, 1020, 1045 Alloy Steel: 4140, 4340, 5120, 5140, 20CrMnTi Stainless Steel: 304, 316, 430, 17-4PH
Standard GB / ASTM A108 / JIS
Shape Round Bar, Square Bar, Flat Bar, Rectangular Bar, Hexagonal Bar, Special Shaped Bar (Customized)
Tolerance ±0.05mm (High Precision)
Surface Finish Bright / Polished/Chromed
Length Standard: 3m ~ 6m Custom Length Available
Sample Free Samples Available (According to Customer Requirements)
Customization Fully Customizable (Special Shapes & Sizes as per Drawings)

Size

Shape Size Range Notes
Round Bar
Diameter: 4mm ~ 400mm
Most common shape
Square Bar
4x4mm ~ 90x90mm
High precision corners
Flat Bar
Thickness: 3~60mm x Width: 4~110mm
Excellent for structural & parts use
Hexagonal Bar
S4mm ~ S101mm
Ideal for fasteners & tools
Special Shaped Bar
Fully Customized
According to customer drawings

Material & Application

Material Key Features Common Applications
A36 / 1018 / 1020 Good weldability, general purpos Construction, machinery parts
1045/CK45 Medium carbon, high strength Shafts, gears, bolts,Standard excavator rods, hydraulic cylinder rods
4340 High strength, wear resistant Automotive, heavy machinery
4140 / 4340 SCM440 / 42CrMo High strength + good hardenability Higher strength, superior wear resistance, ideal for high-load conditions
5120 / 5140 Good hardenability Gears, shafts
20CrMnTi Excellent carburizing performance Automotive gears, transmission parts
304 / 316 Excellent corrosion resistance Food machinery, chemical equipment, marine applications
430 Good formability & magnetic Decorative, automotive trim
630/17-4PH High strength + corrosion resistance Aerospace, medical, high-end machinery

Production Process

Process Flow 1

Peeling → Phosphating → Annealing → Phosphating and Soapingcold → drawing → polishing and straightening → cutting

Other Products

Other Products

Other Products

Special Type Bars

Special Type Bars

Custom Steel Bar

Custom Steel Bar

Product Details

Premium Quality Flat Bars with Tight Tolerance ±0.05mm

YaDa Metal is a professional manufacturer of high-precision cold drawn steel flat bars. Using advanced cold drawing technology, we produce flat bars with excellent dimensional accuracy, smooth surface finish, and superior mechanical properties.
Our cold drawn flat bars are widely trusted by manufacturers in construction, machinery, automotive, and industrial equipment industries.


Key Features

  • Tight Dimensional Tolerance — ±0.05mm for high-precision applications
  • Excellent Surface Finish — Bright and smooth (Ra 0.4–1.6μm)
  • Superior Straightness — ≤ 0.5mm/m
  • Enhanced Strength & Machinability — Better than hot-rolled flat bars
  • Wide Size Range — Thickness 3–60mm × Width 4–110mm
  • Custom Lengths — Standard 3–6 meters or cut to your exact requirements
  • Full Customization — Special thicknesses and widths available upon request

Specifications

Parameter Details
Shape Flat Bar
Size Range Thickness 3–60mm × Width 4–110mm
Tolerance ±0.05mm
Length 3m – 6m (standard), custom lengths available
Surface Finish Bright / Polished
Straightness ≤ 0.5mm/m
Standards GB, ASTM A108, JIS
Materials 1018, 1020, 1045, CK45, 4140, SCM440, 304, 316, 17-4PH

Material Options & Applications

Material Key Features Common Applications
1018 / 1020 Good weldability, easy machining Structural parts, machinery components
1045 / CK45 High strength, good machinability Shafts, gears, precision flat components
4140 / SCM440 High strength & wear resistance Automotive parts, heavy equipment
304 / 316 Excellent corrosion resistance Food machinery, chemical & marine equipment
17-4PH High strength + corrosion resistance Aerospace and high-end industrial applications

Applications

Our cold drawn flat bars are ideal for:

  • Construction and structural components
  • Machinery frames and supports
  • Automotive and transportation parts
  • Hydraulic equipment and machinery
  • Agricultural machinery components
  • Precision engineering and tooling

Why Choose YaDa Cold Drawn Flat Bars?

  • Factory Direct — Competitive pricing with reliable supply
  • Strict Quality Control — 100% inspection before shipment
  • Customization Capability — Special sizes made to your drawings
  • Fast Delivery — Standard sizes in stock, custom orders within 15–25 days
  • Professional Support — Technical team ready to assist with material selection

Get Your Custom Quote Today

We offer free samples for qualified bulk orders. Contact us now for the best price and fast delivery!

Email: [email protected]
Tel: +86 13920216030

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