1) special hook-shaped thread
特殊钩形螺纹
1.
A finite element analysis of the self-sealed special hook-shaped thread of end-surface metal
端面金属自密封特殊钩形螺纹有限元分析
2) special sawtooth thread
特殊锯齿形螺纹
3) premium thread
特殊螺纹
1.
For the casing selection in corrosion environment;to choose different thread with different wells,premium threads.
根据套管的受力、使用环境等条件合理的选用非API套管;避免使用高强度套管;API BTC螺纹厚壁套管接箍的强度低于管体的强度,使用厚壁套管解决抗挤强度时,必须考虑接箍的强度;腐蚀环境下套管的选择;根据不同井况选择不同螺纹形式,特殊螺纹与API螺纹不能互换使用;非API的新型套管下井前,可通过全尺寸模拟试验对其结构和密封完整性进行评价。
4) special thread
特殊螺纹
1.
Resenrch and application of special thread foint for casing;
油套管特殊螺纹接头的研制与应用
2.
CNC Turning Technology for Special Thread on Mould of Bottle Cover & Bottle Mouth;
数控车削瓶盖、瓶口模具的特殊螺纹
3.
Analysis for threading-up characteristics of special thread petroleum casing-pipe
特殊螺纹石油套管上扣特性分析
5) special screw thread
特殊螺纹螺距
1.
After years of practice and accumulation,a set of calculating method of hanging wheel to turn special screw thread is concluded,and by displacing the handle of the gliding gear setup and Norton setup and ratio of the hanging wheel according to the calculating result,the turning of the special screw thread on the general lathe is realized.
经过多年的实践与积累,摸索出一套车削特殊螺纹螺距的挂轮计算方法及计算结果。
6) premium shouldered connection
特殊螺纹接头
1.
Investigation of makeup performance of premium shouldered connection;
PSC特殊螺纹接头上扣特性研究
补充资料：特殊
不同一般的；不平常的：特殊性｜情况特殊｜特殊待遇。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条