The view has been verified by the bolt joint tests for metallic materials (LY12CZ).
这一观点已由金属材料(LY 12 CZ)的螺接试验所验证。
2
When electric insulation is required, non-metallic coating, protective non-metallic tube or insulating joint, etc., can be adopted for the insulation implementation.
当要求电气绝缘时，可采用非金属镀层、非金属外保护套管或绝缘接头等方式来实现。
3
Ring joint gasket are metallic sealing rings suitable for high pressure and high temperature dutries.