| 摘要 |
<p>PURPOSE:To eliminate necessity for provision of a pipe flange with any fit part for aligning a packing with the center, facilitate the fastening, and suppress the costs. CONSTITUTION:An internal conical surface 6 is formed on the opposing surfaces of one 3 of a pair of flanges 3, 3a, while an external conical surface 6 to contact with the internal conical surface 6 is formed on the opposing surfaces of the other flange 3a, and coupling is generated by these flanges 3, 3a, bolts 8, and nuts 9 in a position nearer the periphery than the conical surfaces 6, 6a, and the conical surfaces 6, 6a are contacted with each other to achieve prevention of leakage.</p> |
