又叫补心或内外丝,用于将小口径管子连接于大口径管子内的管件。 水暖安装中常用的一种管件。补心又称内外螺纹管接头,用于直线管路变径处。一般立管变径必须采用大小头,支管可以采用补心连接,如水表变径处的连接。
bush ; bushing ; pipe lining
埋入部分包括蜗壳座环、尾水锥管、尾水肘管、机坑里衬等。
The embedding part includes volute socket ring, tail water taper pipe, tail water ell, pit liner and so on.
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.
衬管悬挂器有许多尺寸和规格,以适应各种不同的完井条件。
Liner hangers are available in a range of sizes and specifications to suit a variety of completion conditions.
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