GB/T 16749 refers to the design, manufacture, inspection and acceptance of corrugated expansion joints for pressure vessels. The full name of this standard is "Corrugated Expansion Joint for Pressure Vessels", and the latest version is GB/T 16749-2018. This standard applies to corrugated expansion joints mounted on pressure vessels to absorb thermal expansion and contraction deformation of the vessel or piping system due to temperature changes.
The main contents of GB/T 16749-2018 standard include:
Terms and definitions: Explains the technical terms associated with expansion joints.
General Requirements: It stipulates the basic requirements of material selection, design principle, manufacturing process and quality control of expansion joints.
Classification and labeling: The classification method of expansion joints and product labeling rules are explained.
Materials: The performance requirements and selection criteria of materials used in each part of the expansion joint are specified in detail.
DesignThis paper provides the basis and method of design and calculation of expansion joint, including fatigue life analysis of bellows.
Manufacturing: The process flow and quality control points to be followed in the manufacturing process are defined.
Inspection and Acceptance: The factory inspection items, methods and criteria for conformity are specified.
Inspection rules: The classification, frequency and sampling scheme of tests are expounded.
Marking, packaging, transportation and storage: The identification of the expansion joint, packaging requirements, and precautions for transportation and storage are given.
When designing and manufacturing corrugated expansion joints for pressure vessels, the regulations of GB/T 16749-2018 must be strictly observed to ensure the safety and reliability of the product. Factors that designers and manufacturers need to consider include working pressure, working temperature, media characteristics, expected displacement, fatigue life and the characteristics of the pressure vessel or pipeline connected thereto.
It should be noted that standards are updated with the development of technology and industry, so the latest version of the standard should be referred to in specific applications. If you need to know the specific terms of GB/T 16749-2018 in detail, it is recommended to consult the original standard or contact the relevant standardization body for detailed information.