When threading pipe, gauge pipe threads for size and length to avoid jamming pipe against seat and disc.
When threading pipe, gauge pipe threads for size and length to avoid jamming pipe against seat and disc.
当对管道进行攻丝时，要测定管道螺纹的尺寸和长度，避免将管道塞满阀座和阀瓣。
When threading pipe, gauge pipe threads for size and length to avoid jamming pipe against seat and disc.
当对管道进行攻丝时，要测定管道螺纹的尺寸和长度，避免将管道塞满阀座和阀瓣。