发明名称 |
METHOD FOR MAKING A JOINT BETWEEN A MAIN PIPE AND A BRANCH PIPE AND APPARATUS FOR USE IN THE METHOD |
摘要 |
In a method for making a joined pipe, a main pipe is cut so that two V-shaped edges of a right angle are formed in the diametrical positions on the periphery of the main pipe, and a branch pipe is cut so that two peaked edges of a right angle are formed in the diametrical positions on the periphery of the branch pipe. Then, the facets of the V-shaped edges and the peaked edges are fused by heating, and butt-welded under pressure. A heating apparatus includes a heater with a V-shape recessed attachment and a peaked attachment. A cutting apparatus includes a circular rail and a slit inside the circular rail on a base, a clamp for clamping a pipe, and a cutter which moves in the slit. A butt-welding apparatus includes two cradles which can move near to and far from each other, a heater which can position between the two cradles, and a clamp which can rotate on each base. |
申请公布号 |
EP0546551(A3) |
申请公布日期 |
1994.06.15 |
申请号 |
EP19920121087 |
申请日期 |
1992.12.10 |
申请人 |
SEKISUI KAGAKU KOGYO KABUSHIKI KAISHA |
发明人 |
YAMADA, YONEKAZU;YOSHINO, YUTAKA;KITADA, MITSUSHIRA;SEKI, KAZUO |
分类号 |
B29C65/20;F16L47/26;F16L47/34;(IPC1-7):F16L47/00 |
主分类号 |
B29C65/20 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|