PVF Double Wall Bundy Tube for GM Brake System

PVF Double Wall Bundy Tube for GM Brake System

1. Standard

ASTM A254 Copper-brazed steel tubing

SAE J526 Welded low-carbon tubing

EN10305-6 Welded cold drawn tubes from hydraulic and pneumatic power systems

YB/T4164 (Stricter than ASTM A254 and SAE J527)

Introduction of YB/T4164
YB/T4164 is published for double wall brazed steel tubes (Bundy Tubes) used for refrigeration, A/C, general automotive, hydraulic and other similar applications requiring tubing of suitable quality for bending, flaring, forming, and brazing.
 The dimensions, mechanical properties, requirements for coating, salt mist and double-flare tests of YB/T4164 are similar to US standards. While the chemical composition, flattening, bending, pressure proof tests and inside cleanliness of YB/T4164 are lower than that of US standards.

Generally the specifications of YB/T4164 are stricter than ASTM A254 and SAE J527.
The latest revisions of these standards are: YB/T4164-2007, ASTM A254-12, and SAE J527-201306.
Note: Please refer to the newest updates of these specifications.

2. Sizes

Out Diameter: 3.18mm~15mm
Wall Thickness: 0.5mm~1.0mm
Length: Cut to length, Any length as your requirements

3. Steel Grade

BHG1, SPCC, SPCD, SPCEN, ST14, ST15, ST16, DC04, DC05, DC06

4. Heat Treatment

BK or NBK

5. Specification

6. Production Process

Tube welding– Cold drawing (reduce diameter)– Annealing in Protected Atmosphere— Cleaning-- Leakage detection– Zinc/Copper Plating– Keep pressure (Airtightness) – Packing

7. Surface Treatment

8. 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

9. Application

Fluid carrying system for automobiles

Fluid carrying system for refrigerators

Wire condenser for chillers, showcase

Vending machine, ice machine etc.