发明名称 |
Method of forming a large diameter extruded pipe |
摘要 |
A self-aligning flange includes a flange member, a collar member and a stop member. An inner perimeter of the collar member is sized to receive an outer perimeter of a pipe. The flange member extends outward from an outer perimeter of the collar member. The stop member extends inward from the inner perimeter of the collar member. A large diameter extruded pipe includes a continuous cross section of at least six inches in diameter. It is preferable to weld a flange to one end of the large diameter extruded pipe. Immediately after the large diameter extruded pipe has been formed in an extrusion press, it is sprayed with a coolant to increase the surface hardness thereof.
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申请公布号 |
US7921560(B1) |
申请公布日期 |
2011.04.12 |
申请号 |
US20060432172 |
申请日期 |
2006.05.11 |
申请人 |
RASP, INC. |
发明人 |
DRESANG RICHARD D.;UTECHT PETER W. |
分类号 |
B21D51/16;F16L9/00;F16L23/00 |
主分类号 |
B21D51/16 |
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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