日韩国产成人高清视频_a级毛片无码真人久久久_国国产精品xx在线观看观看_91久久韩国电影免费看_男生女生靠逼软件_国产精品毛片在线完整版SAB等_日韩免费成人在线_三级综合影视乱伦_日韩精品黄色一级片_国产精选视频一区二区三区不卡播放无码

QUALIFICATION DOCUMENTS
Adhering To The To Science And Technology As The Guide, Seek Levelopment By Innovation, Strives For The Survival By The Quality

ANSI/ASME B16.25

  • Categories：Product Information
  • Author：Zhongran
  • Source：Hebei Zhongran Pipeline Co., Ltd.
  • Updated：2020-09-12
  • Views：867

【Summary Description】

ANSI/ASME B16.25

【概要描述】

  • Categories：Product Information
  • Author：Zhongran
  • Source：Hebei Zhongran Pipeline Co., Ltd.
  • Updated：2020-09-12
  • Views：867
Details

ANSI/ASME B16.25, Buttwelding Ends

ANSI/ASME B16.25 Standard covers the preparation of butt welding ends of piping components to be joined into a piping system by welding.

It includes requirements forwelding bevels, for external and internal shaping of heavy-wall components, and for preparation of internal ends (including dimensions and tolerances).

Coverage includes preparation for joints with the following:
(a) no backing rings(b) split or noncontinuous backing rings(c) solid or continuous backing rings(d) consumable insert rings(e) gas tungsten arc welding (GTAW) of the root pass Details of preparation for any backing ring must be specified when ordering the component.

ANSI/ASME B16.25 Standard applies to any metallic materials for which a welding procedure can be satisfactorily qualified, but does not prescribe specific welding processes or procedures.

Unless otherwise specified by the purchaser, it does not apply towelding ends conforming to ASME B16.5, B16.9, or B16.47.

 

掃二維碼用手機看
中燃管道

Hebei Zhongran Pipefitting Co., Ltd.

Copyright：Hebei Zhongran Pipefitting Co., Ltd.