Common heat exchange tube specifications and standards at home and abroad
Depending on different domestic and foreign standards, the specifications of heat exchange tubes are also different. The following is an introduction to common heat exchange tube specifications and standards:
1. International standards:
The International Standards Organization (ISO) stipulates that the length of heat exchange tubes shall not exceed 18000mm, the outer diameter shall be 6mm to 89mm, and the wall thickness shall be 1.0mm to 8.1mm. Commonly used international standards include ASTM A179, ASTM A192, ASTM A210, ASTM A213, etc.
2. American standards:
The outer diameter of heat exchange tubes specified by American standards is generally 5/8 inches, 3/4 inches or 1 inch, the length is up to 30 feet, and the wall thickness is 0.049 inches to 0.120 inches. The American Standards Association (ASA) standards mainly include A69.1, A450, A250, A213, etc.
3. European standards:
European standards mainly use millimeter specifications, and commonly used pipe diameters are 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm, 22mm, 25mm, 28mm, 30mm, etc. The specifications are implemented in standards such as EN10216-2, EN10217-2, DIN17175, etc.
Different specifications according to different application scenarios
The specifications of heat exchange tubes also vary according to different application scenarios. For example, in the field of steam heat exchange, the pipe length is generally 6m or 10m, and the pipe diameter is 25mm, 38mm, etc.; in the chemical industry, the pipe diameter is generally 19mm, 25mm, 32mm, 38mm, 50mm, 65mm, etc.; in the papermaking field, the pipe diameter is generally 19mm, 25mm, 38mm, 50mm, etc. Therefore, when choosing a heat exchange tube, it is necessary to choose the appropriate specification according to the specific application scenario.
Summary
Depending on different standards and application scenarios, the specifications of heat exchange tubes will vary and need to be selected according to specific circumstances. In addition, attention should be paid to the material selection of the part in direct contact with the tube, the tube spacing, the tube length, etc. to ensure the normal operation and heat exchange effect of the heat exchanger.
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