The technology to avoid the dishing and folding of pipe shell appearing at the bending of long rectangular non-stuffing and coreless tube was introduced.
介绍了避免无填料和衬芯的长矩形管弯曲成形后管壁出现内陷及折痕的工艺，模具结构特点及设计中注意的事项，模具结构合理，便于加工、装配及使用。
Aluminum frame, adjustable folding after bending handrails, foot care detachable lift, solid front, pneumatic rear wheel quick release, anti-turn round.
铝合金车架，后折可调弯扶手，可拆升降脚托，实心前轮，快拆充气后轮，防翻轮。
Plating frame, after bending handrails, removable foot care, solid front, pneumatic rear wheel QR, folding handle.
电镀车架，后折弯扶手，可拆脚托，实心前轮，快拆充气后轮，可折把手。
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