What is the difference between standard flanges and non-standard flanges?

Thread Content

This post was last edited by Thank goodness you're here on 2016-7-18 15:36. What are the differences between standard flanges and non-standard flanges? 1. National standard flanges are general-purpose components; the outer diameter, screw holes, and thickness of flanges of various specifications are fixed. Moreover, national standard flanges take safety factors into account, so the safety margins for their dimensions and thicknesses are relatively large. 2. Non-standard flanges are generally flanges designed by enterprises or individuals to save materials or to use locally available materials. Generally, non-standard flanges are designed to be smaller and thinner than standard flanges in order to save material; the design of the sealing surface can also be altered, for example by using O-rings for sealing. 3. Standard flanges are available on the market, while non-standard flanges must be designed and manufactured by oneself. 4. Standardized flanges have limited applications; for example, if the working pressure of a flange on a equipment cylinder is only 0.3 MPa, and you feel it’s not necessary to use a standardized flange with a pressure rating of 0.6 MPa, then you can design your own small, thin customized flange. However, you must take into account that the costs associated with designing and manufacturing such a flange should be lower than the cost savings resulting from using less material