Pipe threads where pressure - tight joints are not made on the threads - verification by means of limit gauges 非螺纹密封连接的管螺纹.用极限量规检验
Ground thread taps for pipe threads g series and rp series - tolerances on the threaded portion G系列和rp系列管螺纹用的磨制螺纹丝锥.螺纹部分的公差
Pipe threads where pressure - tight joints are made on the threads - verification by means of limit gauges 螺纹上有压力密封接缝的管螺纹.用极限量规验证
Pipe threads where pressure - tight joints are not made on the threads - dimensions , tolerances and designation 非螺纹密封连接的管螺纹.尺寸公差和名称
Whitworth pipe threads for pipe unions - parallel internal thread and taper external thread - dimensions 管箍用惠氏管螺纹.平行内螺纹和锥形外螺纹.尺寸
Stud ends , ports , for fittings , valves - plug screw with whitworth pipe thread - general outlay of types 管件和阀门用管堵和螺纹孔.带惠氏管螺纹的螺塞.各类
If pipe dope is used , apply sparingly on pipe threads , neveron valve threads 在管道螺纹上只能少量使用管道粘接剂，但是在阀门螺纹上绝对不能使用管道粘接剂。
Pipe threads where pressure tight joints are made on the threads - part 3 : verification by means of limit gauges 用螺纹密封的管螺纹.第3部分:用极限量规检验
Hand and machine - operated circular screwing dies for parallel pipe threads , g series iso 4231 : 1987 ; german version en 24231 : 1989 直管螺纹手动和机动圆板牙. g系列
Pneumatic fluid power . directional control valve with four ports . mounting surfaces of subplate . pipe thread 气压流体动力.带4个口的定向控制阀门.底座安装表面.管材螺纹
