管堵 meaning in Chinese

casing cap
head plug
pipe closer
pipe plug
plug

Sealed board pipe stopper of sewer pipe for the air test
排水管道闭气检验用板式密封管堵
Cast iron special castings for asbestos cement pressure pipelines ; plugs
石棉水泥压力管道用铸铁专用铸件.管堵
Dl tube mender main data
铸铁管堵漏器主要数据：
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
Screwed stud - ends ; tapped holes ; for compression fittings , valves , screw plugs , screwed stud - ends type e ; design dimensions
压合接头阀门螺旋塞和e型螺纹管堵用螺纹管堵和螺