Threads of bolts and nuts shall be coated before installation with anti-galling agent.
在安装前螺栓的螺纹及螺母应用防磨损剂包覆。
It is a precondition and base of improving anti-galling performance of oil well pipe to make sure the leading influencing factor of API pipe thread gluing.
科学地确定出油井管螺纹粘扣的主要影响因素是提高油井管抗粘扣性能的前提和基础。
It is a precondition and base of improving anti-galling performance of oil well pipe to make sure the leading influencing factor of API pipe thread gluing.
科学地确定出油井管螺纹粘扣的主要影响因素是提高油井管抗粘扣性能的前提和基础。
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