JB/T 10503-2017High efficiency heat exchange tubes for air conditioning and refrigeration (English PDF)

National Standard of the People's Republic of China

Replacing

JB/T 10503-2005

Issued by: Ministry of Industry and Information Technology of the People's Republic of China

Contents

• 1 Scope
• 2 Normative references
• 3 Terms and definitions
• 4 Type and basic parameters
• 4.1 Type
• 4.2 Basic parameters
• 4.3 Nominal conditions of the single tube heat transfer performance test
• 4.4 Model
• 5 Technical requirements
• 5.1 General requirements
• 5.2 Heat transfer enhancement coefficient C
• 5.3 Material
• 5.4 Chemical composition
• 5.5 Allowable stress
• 5.6 Delivery condition of the tube
• 5.7 Grain size requirement in the annealed condition
• 5.8 Mechanical property requirements
• 5.9 Technological property requirements
• 5.10 Eddy current testing requirements
• 5.11 Air tightness requirements
• 5.12 Pressure resistance requirements
• 5.13 Dimensional tolerance requirements
• 5.14 Cleanliness requirements
• 5.15 Appearance
• 6 Test methods
• 6.1 Instruments and meters
• 6.2 Heat transfer performance test
• 6.3 Chemical composition analysis
• 6.4 Determination of the grain size
• 6.5 Internal stress test
• 6.6 Mechanical property test
• 6.7 Technological property test
• 6.8 Eddy current testing
• 6.9 Air tightness test
• 6.10 Pressure test
• 6.11 Dimensional inspection
• 6.12 Cleanliness inspection
• 6.13 Appearance inspection
• 7 Inspection rules
• 7.1 General requirements
• 7.2 Classification of inspection
• 7.3 Inspection items
• 7.4 Judgement of conformity
• 8 Marking, packaging, transport and storage, and quality certificate
• 8.1 Marking
• 8.2 Packaging
• 8.3 Transport and storage
• 8.4 Quality certificate
• Annex A (informative) Composition of the model of the tube (1)
• A.1 Method of composing the model of the tube
• A.2 Type codes of the tube
• A.3 Provisions on the main parameter
• Annex B (informative) Composition of the model of the tube (2)
• B.1 Composition of the model of the tube
• B.2 Codes of the tube
• B.3 Types of the inner wall of the tube
• B.4 Material number
• B.5 Examples of the model
• Annex C (normative) Test method for the single tube heat transfer performance
• C.1 Field of application
• C.2 General provisions
• C.3 Test apparatus
• C.4 Test
• C.5 Calculation of the heat transfer coefficient
• C.6 Symbols and units