型号适用范围弯管外径(mm)钢管壁厚(mm)弯曲角度备注***-212D1/2〞—2〞21.3-662.75-4.590°≤α＜180°电动***-213D1/2〞—3〞21.3-88.52.75-4.590°≤α＜180°电动***-214D1/2〞—4〞21.3-1082.75-690°≤α＜180°电动***-215D1/2〞—5〞21.3-5〞2.75-890°≤α＜180°电动***-216D1/2〞—6〞21.3-6〞2.75-1290°≤α＜180°电动)