对复杂断面的异型材，在拉拔时要考虑道次加工率和拉拔速度。
But the drawing of the complicated section special shaped wire must consider processing rate and speed.
5%的单道次拉拔，可获得高强度、高韧性且具有一定弯曲性能的产品。
5% single pass draught to draw, taking all these measures can get the product with high strength, high toughness and definite bending property.
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