GB/T 9222-2008 in English

《GB/T 9222-2008水管锅炉受压元件强度计算》由TC262（全国锅炉压力容器标准化技术委员会）归口，主管部门为国家标准化管理委员会。
本标准规定了水管锅炉受压件的强度计算方法、结构和材料许用应力；提供了决定件最高允许计算压力的验证方法。本标准适用于额定压力不低于0.10MPa的固定式水管锅炉和固定式水管热水锅炉的受压件、包括锅筒筒体、集箱筒体、管子、锅炉范围内的管道、凸形封头、平端盖及盖板和异形件。

This standard specifies strength calculation method, structure, material requirements and material permissible stress of pressure parts for watertube boiler; and also offers verification method for determining maximum permissible gauge pressure of parts.
This standard is applicable to pressure parts, whose rated pressure shall be no less than 0.10 MPa1), of fixed type water pipe steam boiler and fixed type water pipe hot water boiler hot-water boiler, such as: boiler barrel body, header tank body, pipes, pipes in range of boiler, convex head, flat-end cover, cover board and abnormal parts.

Foreword
1. Scope
2 Normative reference
3 Terms and definitions
4 General provisions
5 Material, permissible stress and design temperature
6 Boiler barrel body
7 Cylindrical header tank body
8 Pipe and conduit in range of boiler
9 Convex head
10 Flat-end cover and cover board
11 Reinforcement of pore
12 Odd component
13 Proof method for determining maximum permissible design pressure of component
Appendix A (Normative appendix) Calculation for boiler barrel's low cycle fatigue life
Appendix B (Informative appendix) Elementary permissible stress of overseas material under different design temperature
Appendix C (Informative appendix) Approximate calculation for W bending resistance section factor of open pore weaken cross section