We manufacture the tool joint, make the seal test and make-and-break test.
根据零件图试制双台肩钻具接头，对其进行上卸扣试验和水压密封测试。
The test report (including its copy) without the seal shall be considered as invalid.
本报告(包括复制件)未加盖印章一律无效。
Good structure integration was obtained for the brush seal during the test.
刷式密封的结构完整性良好。
A test rig of annular seal properties is built.
建成了一套周隙密封性能实验台。
A test rig of annular seal properties is built.
建成了一套周隙密封性能实验台。
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