ASME 规范关于周长允差

各位，ASME 中关于周长允差的内容在哪一章节？谢谢！

没看到过呢。。。。。。。。

你说的太笼统了，具体的标准是哪个？

不知道啊，ASME用的少，刚接触。。。

答： ASME 规范中并没有关于“周长允差”这一说法，只有：
ASME BPVC VIII.1 -2017  
Subsection A General Requirements
Part UG General Requirements for All Methods ofConstruction and All Materials
       ------
UG-80 Permissible Out‐of‐Roundness of Cylindrical, Conical, and Spherical Shells
UG-81 Tolerance for Formed Heads
      ------ASME BPVC I -2017
Part PG General Requirements for all Methods of Construction
      ------
PG-80 Permissible Ou‐of‐Roundnes of Cylindrical Shells
PG-81 Tolerance for Formed Heads
      ------
ASME BPVC IV-2017
Part HG General Requirements for All Materia of Construction
      ------
HG-103 TOLERANCES
      ------
Part HF-Subpart HW  Requirements for Boilers Fabricated by Welding
     ------
HW-813 DISTORTION
     ------
ASME BPVC VIII.2-2017
Part 1 General Requirements
        ------
1.5 Tolerances
       ------
Part 4 Design by Rule Requirements
       ------
4.3.2 SHELL TOLERANCES
4.4.4 SHELL TOLERANCES
      ------
ASME BPVC  VIII.3-2017

Part KG General Requirements
Article KG-1 Scope and Jurisdiction

       ------
KG-160 Tolerances
       ------
Part KF Fabrication Requirements
      ------
KF-130 Tolerances for Cylindrical and Spherical Shells and Heads