一种通常被称为“平面”法兰的法兰类型已在某些类别的螺栓法兰连接中使用多年，但目前还没有涵盖此类法兰连接的规范规则。本文分析了此类连接中垫圈和法兰的性能，并给出了符合现行规范螺栓法兰连接原则的设计公式。文中给出了一个数值例子，说明了设计公式的应用，并将所得结果与相同尺寸压力容器上的应变计测量值进行了比较。

A flange type commonly called "flat-face" flange has been used in certain classes of bolted flanged connections for many years, yet no Code rules exist to cover this class of flanged connections.This paper analyzes the behavior of gasket and flanges in such a connection and gives design formulas which follow the philosophy of the present Code rules for bolted flanged connections. A numerical example is included which shows the application of the design formulas and compares results obtained with values from strain gage measurements on a pressure vessel of same size.