ASME B31.3-2020 (Revision of ASME B31.3-2018) Process Piping ASME Code for Pressure Piping B31 AN INTERNATIONAL PIPING CODE® The American Society of Mechanical Engineers Two Park AvenueNew York NY10016USA FOREWORD前言 Responding to evident need and at the request of The American Society of Mechanical Engineers (ASME).the American Standards Association initiated Project B31 in March 1926 with ASME as sole administrative sponsor.The breadth of the field involved required that membership of the Sectional Committee be drawn from some 40 engineering societies industries government bureaus institutes and trade associations.为反映业界实际需求,美国标准协会应美国机械工程师协会之要求于 1926年3月着手规划B31管道系列,且ASME是唯-一的行政赞助单位:其中由于所涉及的领域广泛,B31部门委员会 的构成成员资格大约由40位工程学会、工业界、政府部门、研究机构和贸易协会来分别提供. Initial publication in 1935 was as the American Tentative Standard Code for Pressure Piping.Revisions from 1942 through 1955 were published as American Standard Code for Pressure Piping ASA B31.1.It was then decided to publish as separate documents the various industry Sections beginning with ASA B31.8-1955.Gas Transmission and Distribution Piping Systems. The first Petroleum Refinery Piping Code Section was designated ASA B313-1959.ASA B313 revisions were published in 1962 and1966.在1935年首次所出版的是“美国压力管道准则”a在1942年至1955年期间历经多次修订版后再次被公布为 美国压力管道标准(编号:ASAB31.1).随后决议以不同工业部门独立发行,而ASAB31.8-1955“天然气输配管道系 统”则是最先被独立出来所发布的其中一册.首次石油炼油厂管道规范册被称之为ASAB31.3-1959 并于1962年和 1966年分别发布了ASAB31.3的修订版. In 1967-1969 the American Standards Association became fi...