According to the relevant information, the cover plate limits the deformation of the case when the force is deformed, and the cover plate is deformed by the initial surface of the case due to the uneven deformation of the case. When the node is pressed, the inner part is pressed. The concave will be limited by the cover, and the convex will not be limited. Due to the use of welded joints, whether it is a stressed node,

According to the relevant information, the cover plate limits the deformation of the case when the force is deformed, and the cover plate is deformed by the initial surface of the case due to the uneven deformation of the case. When the node is pressed, the inner part is pressed. The concave will be limited by the cover, and the convex will not be limited. Due to the use of welded joints, whether it is a pressurized node or a tensioned joint, the concave and convex areas of the cylindrical shell are connected by welding, so that the casing and the cover cannot be disengaged. During the loading process, the end of the cylindrical shell, whether concave or convex, will be limited by the cover.

In the calculation of the weld seam, for the sake of simplicity, the restraining effect in the other direction is omitted, and only the weld constraint perpendicular to the direction of the force is considered, so that the calculation result is safe. Since such a node eliminates the components such as the sleeve and the pin, the structure of the screw is simple, the processing precision of the mechanism is not high, the amount of steel used is relatively low, the welding quality of the cover and the shell, and the welding hollow ball is not required. It is easy to meet the requirements and can be applied to medium and small span grids that do not require high bearing capacity. For such a grid, the node size is determined to a certain extent mainly by the structure.

For the processing of such nodes, it is first necessary to ensure that the raw materials meet the requirements of national standards and have a reliable warranty. Although the precision requirements are not high during processing, the geometric dimensions must meet the calculation requirements and construction requirements, and the dimensions of each part should be controlled, and the error should not be too large. Secondly, the weld must ensure the quality, meet the requirements of the relevant norms and regulations, and be constructed by qualified professional welders according to the operation requirements. It must not be processed by personnel with poor technical level and no welding experience. In addition, in the construction process of the grid, all kinds of work should be closely cooperated to ensure that the grid is clear, the nodes are firm, the quality is reliable, and the functional requirements are met.

Because the cover and the cylindrical shell in the node are the key to affect the bearing capacity of the node. Therefore, it is necessary to ensure that the cover plate and the wall of the casing have a certain thickness, and when the casing is subjected to force deformation, the cover plate strongly restrains the casing to ensure that the engineering requirements are met.


The proper pipe fittings and flanges let your equipment do the work that you intend it to do. The various types of pipe fittings include adapters, bulkhead fittings, plugs, rigid couplings, flexible couplings, 90 degree elbows, 45 degree elbows, reducing elbows, flanges, nipples, concentric reducers, eccentric reducers, side outlet eyes, standard eyes, reducing eyes, bullhead eyes, unions, standard wyes, reducing wyes and many more. You should select the right fitting for your application among the wide range of fitting types and sizes offered.
Common points to consider:
The integrity of any fitting for proper functioning depends upon the following:

  • Selection of correct components or fittings appropriate for the application
  • Careful preparation and cleaning
  • Careful installation and assembly
  • Correct tightening and loading
Selecting Your Pipe Fittings:
The points to consider are as follows:
  • Consider the Tubing Used: For instance, barbed fittings work better in flexible tubing while compression fittings work best with rigid tubing.
  • Determine Material Compatibility: Material selection plays a vital role in the proper working of fittings. There are certain fluids which are not compatible with fitting material and these fittings cause leakage or system damage. It is very essential to check the material compatibility of your fluid with any chemicals.
  • Check Temperature and Pressure Conditions: Appropriate temperature and pressure ratings are needed for proper operating conditions. It is necessary to know whether the fittings are capable of performing at their maximum temperature and maximum pressure ratings because most fittings cannot perform both the task simultaneously.



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