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

ANSI/ASME B16.25标准涵盖了通过焊接连接到管道系统中的管道部件对接焊端的制备。

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).

ANSI/ASME B16.25标准涵盖了通过焊接连接到管道系统中的管道部件对接焊端的制备。它包括焊接斜面、厚壁部件的外部和内部成型以及内部端部制备的要求（包括尺寸和公差）。

Coverage includes preparation for joints with the following: no backing rings; split or noncontinuous backing rings; solid or continuous backing rings; consumable insert rings; gas tungsten arc welding (GTAW) of the root pass.

覆盖范围包括以下接缝的准备：无垫环；分裂或不连续的垫环；实心或连续的垫环；可消耗的插入环；根部焊道的气体保护钨极电弧焊（GTAW）。

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

ANSI/ASME B16.25标准涵盖了通过焊接连接到管道系统中的管道部件对接焊端的制备。

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

它包括焊接斜面、厚壁部件的外部和内部成型以及内部端部制备的要求（包括尺寸和公差）。

Coverage includes preparation for joints with the following:覆盖范围包括以下接缝准备：

(a) no backing rings无垫环

(b) split or noncontinuous backing rings分裂或不连续的垫环

(c) solid or continuous backing rings实心或连续垫环

(d) consumable insert rings易损插入环

(e) gas tungsten arc welding (GTAW) of the root pass Details of preparation for any backing ring must be specified when ordering the component.

(e) 根部焊道的气体保护钨极电弧焊（GTAW）订购组件时，必须指定任何垫环的准备细节。

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.

ANSI/ASME B16.25标准适用于焊接工艺合格的任何金属材料，但没有规定具体的焊接工艺或程序。

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

除非买方另有规定，否则不适用符合ASME B16.5、B16.9或B16.47的拖缆端。

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.

ANSI/ASME B16.25标准适用于焊接工艺合格的任何金属材料，但没有规定具体的焊接工艺或程序。

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

除非买方另有规定，否则不适用符合ASME B16.5、B16.9或B16.47的拖缆端。