发明名称 |
EXISTING PIPE CUT-OFF METHOD, EXISTING PIPE SLITTING METHOD, PIPING STRUCTURE, AND METHOD FOR INSERTING A VALVE IN A LINE |
摘要 |
<p>The invention relates to an existing pipe cut-off method and slitting method, by which an existing pipe made of cast iron and steel can be cut off. With a cut-off method according to the invention, first, a part of an existing pipe 1 is enclosed and sealed up by a seal-up housing 2 in an airtight state, a cutting tool 30 having a plurality of blades 30c is accommodated in the corresponding seal-up housing in a state the cutting tool is attached to the abovementioned seal-up housing 2. Next, the cutting tool 30 is fed toward the center of the abovementioned existing pipe 1 while slitting the existing pipe 1 by rotating the cutting tool 30 by power of a prime mover, and the abovementioned existing pipe 1 is cut off by the cutting tool 30 by turning the abovementioned seal-up housing 2 in the circumferential direction R of the existing pipe 1. <IMAGE></p> |
申请公布号 |
HK1023173(A1) |
申请公布日期 |
2003.08.15 |
申请号 |
HK19990105550 |
申请日期 |
1999.11.30 |
申请人 |
SUIKEN CO., LTD. |
发明人 |
SATO, TOSHIYUKI;HOMMA, HIDESHIGE;YAMASHITA, TAMOTSU;YOKOYAMA, GUMPEI |
分类号 |
F16L55/105;(IPC1-7):F16L |
主分类号 |
F16L55/105 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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