Specifications of materials, design, manufacture, performance, test method, system application and the relation between pressure and temperature for international standards of plastic valves were introduced to know the requirement of basic quality control including sealing test, torque test and fatigue strength test.
对塑料阀门产品和试验方法的国际标准中原料要求、设计要求、制造要求、性能要求、试验方法、系统应用要求和使用压力与温度的关系等内容进行了介绍,借以了解对塑料阀门进行密封试验、扭矩实验和疲劳强度试验等基本质量控制的要求。
The influence of sealing test for HP stop valves on product quality and the cause of unsatifactory sealing test were discussed.
就高压截止阀中的密封试验对产品质量的重要性及密封试验不合格的原因进行了讨论，对“压焊工具”法的原理、受力情况进行了研究、计算，给出了“压力”、“预紧力”等数据，并从力学角度对该工艺的安全性进行了校验。
oil pressure test for tightness
油密试验油压密封试验
oil pressure test for strength and tightness
强度和密封性油压试验油压及强度密封试验
testing methods for sealant for automobiles
汽车用密封剂试验方法
water pressure test for strength and tightness
水压强度和密封性试验
Environmental testing for electric and electronic products--Test Q: Sealing
GB/T2423.23-1995电工电子产品环境试验试验q:密封
Test method for building sealants
GB/T13477-1992建筑密封材料试验方法
Dust proof performance-Test method for buses
GB/T12478-1990客车防尘密封性试验方法
Rain proof performance test method for buses
GB/T12480-1990客车防雨密封性试验方法
Test methods for rubber O rings
GB/T5720-1993O形橡胶密封圈试验方法
Test method for leaks in sealed flexible packages
GB/T15171-1994软包装件密封性能试验方法
testing methods for sealed flexible packages
软包装件密封性能试验方法
Experimental investigation of control valves for flush ofmechanical seals.
机械密封冲洗用限流阀性能试验研究
Analysis and Experimental Study on the Failure of Seal in Transmission of Vehicle
传动装置动密封失效分析及试验研究
Experimental Investigation of Three-phase Foam Sealing Liquid for Gas Pressure Determination Borehole
测压钻孔三相泡沫密封液的试验研究
Application of electronic balance in the paraffin-coated method to determining soil density
电子天平在蜡封法密度试验中的应用
Experimental Investigation into Friction State of End Faces of GY70 Mechanical Seal
GY70型机械密封端面摩擦状态试验研究
The Design of Main Seal Ring Used in Expansion Ring Testing Device for Pipeline
管道用胀环试样试验台主密封圈的设计
Spiral wound gaskets test method of hydraulic pressure sealing characteristics
GB/T4620-1984缠绕式垫片水压密封性能试验方法