本标准规定了用于航空航天应用的管接头8°30'，额定压力高达28 000 kPa的弯头，三通和十字管的动态梁密封端的尺寸

This standard specifies the dimensions of the dynamic beam seal end for elbows, tees and crosses for pipe couplings 8°30', nominal pressure up to 28 000 kPa, for aerospace applications.