发明名称 PIPE JOINTING
摘要 <p>In buried utility pipe runs comprising jointed pipe sections (2A, 2B, 2C), joints are replaced in situ. The existing joint is revealed and cut away. A gap (7) is formed between the ends of the adjacent pipe sections and a sleeve type joint (3A, 3B, 3C) inserted into the gap (7). At least one pipe section is moved axially through the surrounding soil (6) to close the gap and seal the ends into the sleeve joint.</p>
申请公布号 WO1997007359(A1) 申请公布日期 1997.02.27
申请号 GB1996001938 申请日期 1996.08.08
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