| 摘要 |
Four aluminum tubes are used. Two long tubes (1,2) form uprights and are connected to two short horizontal tubes (3,4) which can carry the wheels. The horizontal and upright tubes are connected together via an angle iron (6) which extends horizontally across the width of the cart. There are flat cross-pieces (5) further up the upright tubes. Holes (Bohrung) in the tubes accommodate welded rivets (Schweissnahte).
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