本章内容包括:圆柱壳、成型封头(半球形、碟形和椭圆形)、锥壳及变径段等的范围。锥壳及变径段与国家标准《钢制压力容器》或《钢制石油化工压力容器设计规定》基本一致。本文主要阐述圆柱壳和成型封头的有关问题。本标准明确规定是以第三强度理论为基础的。因此,本章所有计算都是以第三强度理论 This chapter includes: Cylindrical shell, forming head (hemispherical, dish and oval), conical shell and the scope of the adjustable segment. Cone shell and variable-diameter section with the national standard “steel pressure vessel” or “steel petrochemical pressure vessel design requirements” basically the same. This article focuses on the cylindrical shell and forming the head of the related issues. This standard is clearly defined based on the third strength theory. Therefore, all calculations in this chapter are based on the third intensity theory