The scroll casing is made of plastic materials and saves the material cost.
所述蜗壳由塑料材料制成，节约了物料成本。
The invention relates to an overall deep drawing technology of a scroll casing of a blower, including the following steps: a steel plate for deep drawing is cut into sheets with a required size;
本发明一种风机蜗壳整体拉深工艺，包括以下步骤：将拉深钢板剪成所需 的尺寸片料；
The invention relates to an overall deep drawing technology of a scroll casing of a blower, including the following steps: a steel plate for deep drawing is cut into sheets with a required size;
本发明一种风机蜗壳整体拉深工艺，包括以下步骤：将拉深钢板剪成所需 的尺寸片料；
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