Joints should be installed on the pipe thread wrapped with the appropriate raw material to ensure the reliability of sealing.
接头安装时管螺纹上应缠绕适当的生料带，以确保其密封的可靠性。
2
Flap valve cover seals are required when there is carbide reactor welding, sealing surface with threadsealing, to ensure the reliability of sealing and prevents scarring.
阀瓣密封根据需要时封面均堆焊接有硬质合金，密封面采用线密封，保证密封的可靠性，并可防止结疤。
3
Aerospace fitting joint assembly, radial sealing. Internal thread bosses. ISO metric thread profile and tolerances. Dimensions.