Bundy tube, sometimes called Bundy pipe, is type of double-walled low-carbon steel tube manufactured by rolling a copper-coated steel strip through 720 degrees and resistance brazing the overlapped seam in a process called Bundywelding. It may be zinc- or terne- coated for corrosion protection. It is used in automotive hydraulic brake lines in cars.
Burst Pressure: 110MPa min.
Made to SAE J527, ASTM A254.
Standard
SAEJ527/Ford Standard/Jingda Standard
Out Diameter
4.76mm~12mm 3/16" 1/4'' 5/16'' 3/8''
Wall Thickness
0.7mm, 1.0mm
Zinc Thickness
≥13μm
PVF Thickness
≥25μm
Length
Cut to length, coil tube
Tensile Strength
≥290Mpa
Yield Strength
≥180Mpa
Elongation
≥25%
HR30T
≤65
Inside Surface Cleanliness
≤0.16g/m2
Corrosion resistance
3000 hours without red rust after salt spray test
Material
Low Carbon Steel/BHG2/HG2
Packing
Coils or Bundles ,then in pallets or wooden boxes
Water-proof packing, using plastic film for inner package , and plastic woven bag for outside package,and then put them in the wooden box
MOQ
1 ton, sometimes can be negotiated by two parties
Production Flow
Coated copper on both sides of the steel strip and brazed after coiled 720℃
PVF coated for longer time against corrosion.
Product Uses
Inspection Equipment
Packaging & Shipping
Water-proof packing, using plastic film for inner package , and plastic woven bag for outside package,and then put them in the wooden box.
Company Information
Jingda (Jingzhou) Automotive Co., Ltd established on February, 2007, located in Jingzhou, Hubei province, China, covering 130,000 square meters .
We have 30 years' developing and manufacturing experience for refrigeration and automobile pipeline.Our factory owns 25 double wall brazed tube mills and 8 production lines including Zinc plating, PVF coating, PA12 extruding coating processes. The products are mainly used for brake systems, power steering systems, fueling systems and cooling systems of automobiles.
Our products are supplied to different car manufacturers through the tier one customers , including Ford, GM, VW, Changan, Chery, Jianghuai, BYD, Geely etc. Moreover, they are exported to USA, Canda, Spain, India, Mexico, Brazil, UK, Australia and so on.
Let's work together to create a brilliant future .
Certifications
Our Services
1.We have more than 30 years developing and manufacturing experience for refrigeration and automobile pipeline.
2. On-time delivery: Generally, it will take 30 to 60 days after receiving your advance payment. The specific delivery time depends on the items and the quantity of your order.
3.Prompt shipment: by reputed shipping line and professional documents. 4.Cargo’s photo : before and after loading into container .
5.Packing : new and strong seaworthy packing, also can based on buyer's special request . 6.We can provide free samples for you check the quality, the samples need about 3-4days . 7.Terms of payment:T/T 30% as deposit, and 70% before delivery. we'll show you the photos of the products and packages.
Our advantage :we keep good quality and competitive price to ensure our customers benefit.
