30meters Per Roll 3/16 1/4 5/16 3/8 1/2 5/8 3/4 Inch Good Sealing Hot-DIP Galvanized Double-Wall Welded Steel Bundy Tube Flexible Brake Pipe

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Product Description

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Basic Product Information

Model NO.
steel brake pipe
Type
Brake Hose
Material
Steel
Certification
ISO/TS16949, ISO13485, IATF-16949, DOT
OD Range
4.76mm ~ 12.7mm
Thickness
0.70mm
Surface Treatment
Copper, White/Yellow Zinc, PVF
Standard
ASTM A254, SAE J527, DIN74234
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Product Description

30 Meters Per Roll Double-wall Welded Steel Bundy Tube Flexible Brake Pipe

  • Welded steel pipe / bundy tube / bundy pipe
  • Diameter: 3/16", 6mm, 1/4", 5/16", 3/8" etc.
  • Wall thickness: 0.7±0.05mm
  • Applications: Double wall used for automobile brake systems; Single wall for refrigeration.
  • Standard Compliance: SAE J527, ASTM A254, TSE 5130, DIN 74234
Feature Specifications
Product NameDouble wall Flexible Automotive Carbon Steel Brake Hose Oil Line Bundy Pipe
Out Diameter4.2 / 4.76 / 6.0 / 6.35 / 8 / 10 / 12.7mm
MaterialLow Carbon Steel / BHG2
Surface TreatmentWhite zinc, Olive-drab zinc, Colored zinc, PVF coated
FeaturesHigh Pressure resistance, High formability, High internal cleanliness
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Technical Parameters

1. Double Wall Brazed Steel Tube: Coated copper on both sides, brazed after coiled at 720ºC. Features high strength, nice elongation, and anti-high pressure explosion properties.

2. Single Wall Welded Steel Tube: Coiled at 180ºC after high-frequency welding. Excellent mechanical properties for auto fuel and transmission tubes.

3. Specialized Coatings:
PVF Tube Trivalent chrome passivated. Salt spray test > 1000 hours.
PA12 Coating Highly corrosive resistance and anti-impact force.

Steel pipe ending fitting
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Related Products & Fittings

  • Brake hose assembly & line kits
  • Rubber & PTFE S.S braided brake hoses
  • Air brake hose systems
  • Female & male fittings, banjo bolts & nuts
  • Hose connectors and joints
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Quality & Packaging

Products are manufactured under strict quality control systems including ISO9001:2015 and DOT SAE J1401 standards. Safety packaging is used to ensure products arrive in perfect condition.

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Application Scope

Our steel pipes are widely used in: Power Steering Systems, Brake Systems, Clutch Systems, and Fuel Systems for various global car brands.

Production Line

Frequently Asked Questions

What are the main applications of these Bundy tubes?
They are primarily used in automotive hydraulic brake systems, power steering, fuel lines, and refrigeration systems.
Which international standards do your brake pipes follow?
Our products comply with SAE J527, ASTM A254, DIN 74234, and TSE 5130 standards.
What surface treatments do you offer for corrosion resistance?
We provide various treatments including Copper coating, Zinc plating (white/yellow/olive), PVF coating, and PA12 coating.
Can the tubes withstand high-pressure environments?
Yes, the double-wall brazed structure is specifically designed for high-pressure explosion resistance and durability.
How are the tubes packaged for shipping?
The tubes are typically packed in rolls, which are then secured in cartons or on wooden pallets for safe transport.
Do your products have DOT certification?
Yes, our brake hoses and pipes are manufactured to meet DOT and SAE J1401 requirements.

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