型号适用范围弯管外径(mm)钢管壁厚(mm)弯曲角度备注***-2121/2〞—2〞21.3-602.75-4.590°≤α＜180°卧式***-2131/2〞—3〞21.3-88.52.75-4.590°≤α＜180°卧式***-2141/2〞—4〞21.3-1082.75-690°≤α＜180°卧式***-212C1/2〞—2〞21.3-602.75-4.590°≤α＜180°带架***-212B1/2〞—2〞21.3-602.75-4.590°≤α＜180°立式***-213B1/2〞—3〞21.3-88.52.75-4.590°≤α＜180°立式SWG-258—258-25≤2mm180°手动)