减少连接螺纹弯曲应力可以延长钻具连接螺纹的疲劳寿命。
A novel drill tool threaded connection stress relief groove is proposed in the paper.
第三章分析了耐压壳体、支撑环和保真筒连接螺纹等耐压部件的设计准则。
In the third part, the design rules for the pressure hull, the retaining ring, the connect screw thread of the truth-preserving canister are analyzed.
传统的套管接头不能满足连接与密封要求，并设计出了一种新型的膨胀连接螺纹结构。
Conventional connector for casing string can't meet the demand of seal and connection in solid expandable tubular and presented a new thread structure for an expandable casing connector.
经分析得出：事故原因是减压阀阀座和阀盖的连接螺纹接触高度过小，强度不足，导致螺纹连接失效。
The screw joint of the reducer bonnet and body was concluded as the failure position because of its small contact height.
这个标准涵盖塑料美国锥管螺纹(NPT)的尺寸和计量方法，用于泄漏密封连接，现在已在所有有关塑料管道产品的ASTM标准中引用。
The standard covers dimensions and gaging of plastic tapered National Pipe Threads (NPT) for leak-tight joints, and it is now referenced in all ASTM Standards for plastic piping products.
经过多次试验，我们解决了独特长度的螺纹杆，通过椅子上的小切口用螺栓连接在一起。
After many tests, we settled on threaded rods of unique lengths that were connected by bolts through small incisions (ear-piercings) in the chair.
当上阀杆沿着它的螺纹上下运动时，通过机械连接带着下阀杆一起运动。
When the upper stem rides up and down on its threads it now moves the lower stem by a mechanical connection.
热嘴与分流板均采用螺纹连接，可以避免模具加工精度导致的漏胶问题；
The nozzle and manifold are connected with screw type which can avoid resin leakage caused by mold machining accuracy.
焊接，钎焊，用水泥涂抹，焊锡和螺纹接头，使其连接至管道，从而制造管道系统截面。
Weld, braze, cement, solder and thread joints to join pipes and fabricate sections of piping system.
选择，测量，切割，铰孔和螺纹连接管道，安装喷头，并爬上备用管道。
Select, measure, cut, ream and thread pipe, install sprinkler heads and mount prepared pipe in supports.
这种阀门应该具有焊接（-US）、螺纹（-UT）、PEX或CPVC等连接端口可供选择。
The valve shall be provided with solder (-US), threaded (-UT), PEX or CPVC connections.
注意：每个阀门有各自的压力等级，不需要为其螺纹连接而降低压力等级。
NOTE: Valves have individual pressure ratings and do not require de-rating for threaded connections.
按连接方法分类(1)螺纹连接阀门：阀体带有内螺纹或外螺纹，与管道螺纹连接。
According to connection method classification (1) threaded connection valves: valve with internal thread or external thread, and pipe thread connection.
如果阀体的材料是可以焊接的，但膨胀系数差异很大，或者工作温度的变化幅度范围较大，螺纹连接部必须进行蜜封焊。
If the valve body material can be welded, but very different thermal expansion coefficient, or changes in operating temperature range of a larger thread junction closure weld must be honey.
仅限于螺纹连接端口连接件。
介绍了常见的用于紧固联接英寸制螺纹和用于管道连接英寸制螺纹的牙形、配合和标识，以及管螺纹的密封特点。
The tooth shape, fit and mark of clamping connection and pipe connection inch threads commonly used are introduced and their seal features.
连接接头滑脱失效是圆螺纹套管损坏的主要形式。
Pull-out failure is the main damage form of round thread casing connections.
进行可靠性计算，获得典型螺纹连接结构的力矩法控制预紧力的可靠度。
According to the calculation of reliability, we get the reliability of the typical screw joint structures the preload.
清洗：检查或更换磨损的阀瓣，断开控制管道的连接，采用钝工具和锤子敲击阀帽上的接片，然后旋松阀帽螺纹。
To Clean: Inspect or replace worn valve disc, disconnect control pipe and unscrew bonnet from valve body using blunt tool and hammer on bonnet lugs.
江阴大桥吊索特别设计了螺纹连接的叉型锚具，其吊索采用半平行钢丝索股和钢丝绳两种材料。
Fork type anchor devices with thread connections are specially designed for hangers of Jiangyin Bridge, and semi parallel wire strands, steel wire ropes are used for the hangers as well.
气缸连接挡块的螺纹滑牙了。
上述塑料层的一开口端内表面开设有螺纹，该塑料层上的螺纹与金属嵌件上的螺纹相连接。
The inner surface at one open end of the plastic layer has the thread, and the thread on the plastic layer is connected with the thread on the metal insert.
标准B2.4 -这个标准控制美国尼必可软管连接螺丝螺纹。
A. N. s. I. standard b2.4-this standard controls NIBCO hose coupling screw threads.
只能采用具有四圈以上的美国国家软管(NH)螺纹的、通过认证的软管水龙头或软管连接件。
Use only with approved hose bibbs or hose fittings having four or more full American National hose (NH) threads.
直到最近，这些标准涵盖PV C (D- 2464)和CPVC (F - 437)目录80螺纹压力连接件。
Until recently, these standards covered PVC (D-2464) and CPVC (F-437) Schedule 80 threaded pressure fitting.
本文介绍了钢筋等强度直螺纹连接的技术原理、性能特点及其在实际施工中的应用前景。
In this article, the writers introduced the principle of technology of jointing the reinforcement uniform strength straight spiral grains.
螺纹连接防松技术是自动生产设备可靠工作的基本保证。
Looseproof technique of the threaded connection is the basic guarantee for the reliable work of the automatic production equipments.
油井管螺纹切削加工中产生的毛刺会直接影响螺纹检验的准确性和螺纹连接质量。
The accuracy of thread inspection and quality of threaded connection will be influenced by burrs resulted from the thread cutting process of tubing and casing.
连接两节管子(生产油管、套管或衬管等)所用的带螺纹的连接件。
A threaded coupling used to join two lengths of pipe such as production tubing, casing or liner.
连接两节管子(生产油管、套管或衬管等)所用的带螺纹的连接件。
A threaded coupling used to join two lengths of pipe such as production tubing, casing or liner.
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