| 摘要 |
Elbow joint for connecting rigid tubular sections (C, B) by means of flexible tubular sections (D), constituted by two pairs of arms (6, 6a) mutually articulated; each pair of arms being in a single piece with a clamping collar (7a) or each arm being in a single piece with a semi-collar (11, 11a), obtained from a flat plate (A), to constitute orientatable piping, particularly devices for the localised suction of fumes, dust and/or vapours, however these may be generated. <IMAGE> |
