ASTM A254-97 SPCC 6×0.7mm Double Wall Copper Brazed Steel Tube for Freezer Evaporator and Automotive Systems
Price:
Negotiable
MOQ:
2Tons
Delivery Time:
10days
Brand:
Joyruns
Product Description
Product Overview
ASTM A254-97 SPCC 6×0.7mm low carbon seamless double wall brazed steel tube designed for refrigerator, freezer evaporator, and condenser applications. This copper-brazed steel tubing offers exceptional performance in demanding fluid systems.
Key Features & Benefits
- High withstanding pressure capacity up to 34.3 MPa
- Superior vibration fatigue strength for automotive applications
- Excellent solderability, bendability, and workability
- Copper-plated inner surface for enhanced performance
- Ideal for brake tubing, power steering, and hydraulic systems
Technical Specifications
Dimensions & Pressure Ratings
| Nominal Diameter (mm) | Outer Diameter (mm) | Wall Thickness (mm) | Guarantee Pressure (MPa) | Burst Pressure (MPa) |
|---|---|---|---|---|
| 4 | 4 ±0.08 | 0.7 ±0.08 | 34.3 | 108 |
| 4.76 | 4.76 ±0.08 | 0.7 ±0.08 | 34.3 | 108 |
| 6.35 | 6.35 ±0.08 | 0.7 ±0.08 | 34.3 | 83.3 |
| 8 | 8 ±0.1 | 0.7 ±0.1 | 24.5 | 66.2 |
| 10 | 10 ±0.1 | 0.7 ±0.1 | 24.5 | 53.9 |
Quality Testing Results
| Test Item | Technical Standard | Test Result |
|---|---|---|
| Mechanical Property | Tensile Strength 290 MPa Yield Strength 180 MPa Elongation 20% |
296 MPa 185 MPa 30% |
| Wall Thickness | 0.70 ±0.1 mm | 0.71 mm |
| Flaring Test | Flaring 25% | 30% |
| Bending Test | Bend 180° in a Radius Three Times of the Pipe Diameter | No Crack or Peeling After Flaring |
| Flattening Test | No Crack After Flattening | No Crack |
| Pressure Test | No Leakage when Charged with 34.3 MPa Nitrogen Gas for 1 min | No Leakage |
| Surface Treatment | Galvanize Thickness: 9 μm Copper-Plating Thickness: 3 μm |
Meets Specifications |
Manufacturing Process
Double walled steel tubing is manufactured from electrolytic copper-coated steel strip (both surfaces). The strip is wound into a continuous tubular with a double-layered wall and then copper brazed in a special furnace using the coated copper as filler metal.
Production Line Images
Packaging
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Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.
Company
Changzhou Joyruns Steel Tube CO.,LTD
Location
No.143 Qingyang North road,Tianning district. Changzhou
Contact Person
Lee