Product Description
|
Product Name |
ASTM B819 Seamless Copper Tube For Medical Gas Systems |
|
Size
|
Outside Diameter |
2-914mm |
|
Thickness |
1mm~220mm (Sch5X~Sch XXS) |
|
Max Length |
1-50m |
|
Surface |
Polished,Yellow,Red |
|
Processing Service |
Bending, Decoiling, Welding, Punching, Cutting |
|
Payment: |
L/C at sight, L/C 180 days, T/T, D/P, OA, Western Union, |
|
Port of Shipment |
Shanghai port in China |
Standard and Certification
- ASTM B819: This specification defines seamless copper tubes for medical gas systems, outlining material properties, dimensions, and testing requirements.
- CE Certification: Compliance with European Union (EU) standards (e.g., EN 751-1) ensures the tubes meet safety, health, and environmental protection criteria for medical gas applications, enabling market access across the EU.
Material and Chemical Composition
- Alloy: Typically made from high-purity copper alloys such as:
- C12200 (Deoxidized Phosphorized Copper): Contains ~0.015-0.040% phosphorus, enhancing ductility and resistance to hydrogen-induced cracking.
- C10100 (Oxygen-Free Copper): Ultra-low oxygen content (<0.001%) for high conductivity and purity, suitable for sensitive medical gases.
- Purity: Strict control of impurities (e.g., sulfur) to prevent contamination of medical gases, which could compromise patient safety.
Applications in Medical Gas Networks
- Gas Types: Suitable for transporting critical medical gases, including:
- Oxygen for respiratory support
- Nitrous oxide for anesthesia
- Medical air, carbon dioxide, and vacuum systems
- System Requirements: Meets standards like:
- NFPA 99 (National Fire Protection Association): Specifies safety requirements for medical gas systems.
- HTM 02-01 (Health Technical Memorandum): UK guidelines for healthcare facilities.
- EN 7396-1: European standard for medical gas pipeline systems.
Installation and Connection Methods
- Joining Techniques:
- Compression fittings: Quick-install, non-welded connections (e.g., Parker or ISO fittings) to avoid debris from welding.
- Soldering/brazing: Using silver-based alloys (low-lead content) with nitrogen purging during welding to prevent oxide formation inside the tube.
- Best Practices:
- Segregation of medical gas lines from other utilities to prevent cross-contamination.
- Color coding (e.g., green for oxygen, blue for medical air) per international standards for easy identification.
Technical Details
Expansion Test
- Tube specimens selected for test shall withstand the expansion shown in standard when expanded in accordance with Test Method B 153. The expanded tube shall show no cracking or rupture visible to the unaided eye.
- Hard-drawn tubes not end annealed are not subject to this test. When tubes are specified end annealed, this test is required and shall be performed on the annealed ends of the sampled tubes.
- Tubes for ferrule stock are not subject to the expansion test.
Flattening Test
- Test Method-Each test specimen shall be flattened in a press at three (3) places along the length, each new place to be rotated on its axis approximately one third turn from the last flattened area. Each flattened area shall be at least 2 in. in length. A flattened test-specimen shall allow a micrometer caliper set at three (3) times the wall thickness to pass freely over the flattened area. The flattened areas of the test specimen shall be inspected for surface defects.
- During inspection, the flattened areas of the test- specimen shall be free of defects, but blemishes of a nature that do not interfere with the intended application are acceptable.
- Tubes for ferrule stock are not subject to flattening test.
Residual Stress Test
- A residual stress test is required to be performed only for Copper Alloy UNS Nos. C23000, C28000, C44300, C44400, C44500, C60800, C61300, C61400, and C68700.
- Unless otherwise specified, the producer shall have the option of testing the product to either the mercurous nitrate test, Test Method B 154, or the ammonia vapor test, Test Method B 858, as prescribed below.
Nondestructive Testing
Eddy-Current Test-Each tube shall be passed through an eddy-current testing unit adjusted to provide information on the suitability of the tube for the intended application. Testing shall follow the procedures of Practice E 243.
Hydrostatic Test
Each tube shall stand, without showing evidence of leakage, an internal hydrostatic pressure sufficient to subject the material to a fiber stress of 7000 psi [48 MPa] as determined by the following equation for thin hollow cylinders under tension. The tube need not be tested at a hydrostatic pressure of over 1000 psi [7.0 MPa] unless so specified.
Detailed Photos
Processing of Production
Packaging & Shipping
Company Profile
Audited Supplier 
){kind=link}