Interpretation of expansion joint parameters

For an expansion joint with a pressure of 2.5 MPa, a nominal diameter of 1400 mm, and a length of 1200 mm, please consult the supplier for details: lol

The expansion joint 2.5JB1400x4E-JB-1200 represents a model of expansion joint. Among them, “2.5” represents the pressure rating, with the unit possibly being MPa ； ““JB” might be a standard code ； “In 1400x4E, “1400” indicates that the diameter of this expansion joint is 1400 millimeters, while “4E” means it has 4 corrugation layers ； “In “JB-1200”, the “1200” may represent another dimension parameter applicable to this expansion joint; its specific meaning may need to be referred to in relevant standards or by consulting the manufacturer. .

Expansion joint 2.5JB1400x4E-JB-1200 is a specific model or specification designation for an expansion joint. However, since this identifier is not a universal standard code or a widely recognized method for indicating models, there is no direct explanation that can cover all possible meanings. However, based on the common naming conventions and parameter representation methods for expansion joints, it is possible to attempt to interpret this designation to some extent: 2.5: This likely indicates that the maximum operating pressure that the expansion joint can withstand is 2.5 megapascals (MPA). This is an important parameter of the expansion joint, used to ensure its safe operation in pipeline systems. JB: This part is probably an abbreviation or identifier for the manufacturer or product series. Different manufacturers may use different letter combinations to denote their product lines or specific types. 1400x4E: This part may indicate some dimension or structural feature of the expansion joint. For example, “1400” may indicate the diameter of the expansion joint or some key dimension, “x4” may represent a multiple or repeating unit in a certain structure, and “E” may denote a specific material, structural type, or additional function. However, these explanations are based on assumptions, as different manufacturers may use different notation methods. -JB-1200: This section may further detail the models or specifications of the expansion joints. For example, “-JB-” might be a supplement or further explanation to the preceding “JB”, while “1200” may indicate a different size or parameter from the preceding “1400”. Since the specific meaning of this identifier may vary depending on the manufacturer, the most accurate interpretation can be found in the product manual, technical specifications, or related documents provided by the manufacturer of that expansion joint. If it is not possible to obtain this information directly, it is recommended to contact the manufacturer or supplier for accurate explanations and instructions.

The standard specifications for expansion joints specify clear marking requirements in their respective standards

This post was last edited by Climbing_q37X8 on 2025-2-19 16:28. DN1400 PN25kg L=1200mm, connected via 4-wave pipe joints

The meaning of the expansion joint 2.5JB1400x4E-JB-1200 is as follows: 2.5JB indicates a pressure rating of 2.5 MPa; JB is the standard code, which usually refers to China’s mechanical industry standards. 1400x4: 1400 indicates a nominal diameter of 1400 millimeters, and 4 represents the wave count, meaning the expansion joint has 4 waves. E: Indicates a structural format of type “E”, usually referring to expansion joints with an inner lining. JB-1200: JB is the standard number, and 1200 indicates that the design length is 1200 millimeters. Summary: This is a expansion joint with a pressure rating of 2.5 MPa, a nominal diameter of 1400 millimeters, 4 corrugations, an inner lining, and a design length of 1200 millimeters, in compliance with JB standards.