A steady exchange of information welds them into a single system .

稳步的信息交流将它们焊接成一个单一的系统。

Welds that are not welder-identified shall be rejected .

应拒绝未经焊工确定的焊缝。

Natural-gas pipelines cannot be used because hydrogen makes the steel tubing brittle and attacks the welds .

天然气管线不能被用来运输氢气，因为氢气会使那些钢管变得易碎，并且氢气还会腐蚀那些焊接处。

Unless otherwise indicated by employer , brinell hardness limits apply to welds after pwht .

除非业主另有说明，布氏硬度限制适用于经焊后热处理的焊缝。

Welds containing defects exceeding that amount shall be cutout and replaced .

应切除并更换含缺陷超过该值的焊缝。