The production and use of non-metallic expansion joints in China follows a series of national standards, among which the most relevant standard is the general technical requirements for expansion joints of metal bellows, namely GB/T 12777. While this standard is primarily for metal bellows expansion joints, in some cases its principles and requirements may also be applied to the design and manufacture of non-metal expansion joints.
However, it is important to note that non-metallic expansion joints may need to follow different standards or industry guidelines due to their unique material properties and use environment. For example, the following standards may be referred to for materials, design, testing, and installation of non-metallic expansion joints:
GB/T 16749: This is the standard regarding the technical specifications of bellows expansion joints for pressure vessels, although mainly for metal expansion joints, but in some respects may also apply to non-metallic expansion joints.
ASTM F1123-87 (2019): This is an American standard that specifies the minimum requirements for the construction, materials, properties, and dimensional requirements of arched non-metallic expansion joints. Although this is not a Chinese standard, it may be referred to in some domestic projects.
Construction Code for Industrial Metal Pipe Engineering GB50235-2010: This standard covers construction codes for pipeline work, which includes installation requirements for expansion joints, for both metallic and non-metallic expansion joints.
GB16749 Standard expansion joint: This may refer to the expansion joint-related part of GB16749, but requires a specific look at the standard text to understand its specific requirements for non-metallic expansion joints.
Implementation standard General Technical Specifications for Expansion Joints of Metal Corrugated Pipe GB/T12777-2008Although this standard is mainly aimed at metal expansion joints, some of its contents may be of reference significance for the general technical requirements of non-metal expansion joints.
For high temperature flue non-metallic expansion joints, it may also be necessary to follow specific industry standards or enterprise standards to ensure the performance and safety of the expansion joints in high temperature environments.
In practical application, the design and manufacture of non-metallic expansion joints not only follow the above national standards, but also need to consider the special requirements and working conditions of specific projects, so as to ensure the safe and reliable operation of expansion energy saving under the predetermined environment. Manufacturers and users should consult the latest national standards and industry codes in detail to ensure the compliance and suitability of non-metallic expansion joints. If there are specific engineering projects, you should also consult professional engineers or experts in related industries for the most accurate and applicable guidance on specifications.