摘要 |
A contractible joint device for metal conduit (10), includes an inlet short pipe (1), a short outlet pipe (2) and a casing coupling (3). The opposite inner ends of the said two short pipes (1, 2) are placed in casing coupling (3) with a come-and-go clearance (6) between said inner ends. A corrugation pipe (7) is placed and can be axially moved back and forth by a force in said come-and-go clearance (6). The two ends of the said corrugation pipe (7) are connected respectively with the inner ends of the two short pipes to form a seal, and at least one of the ends of casing coupling (3) is free with relative to two short pipes (1, 2).
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申请人 |
LOU, CHICHENG;ZHOU, YUSHI;LIU, YUEFANG;JIN, JIESHENG |
发明人 |
DENG, JIANMIN;ZHOU, YUSHI;LI, XUEQIN;LI, ZHU;LI, GENGWU;LIU, YUEFANG;LIAO, ZIHAN;LI, XIAOHONG;LOU, CHICHENG;OU, SHAMEN;YANG, JIYAO;ZHAO, XIJIN;PAN, JIAJING;JIN, JIESHENG;LI, XIA;RUI, YOUREN |