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在制作各种任意断面形状的异型管多节弯头、管道与平面斜交以及任意断面对称、大小相同的异型管正交三通、斜交三通、裤裆三通时,一般要展开放样,这样,既繁锁又费时间。为此,我们革新成功弯头划线环,不用展开放样,直接在管道上划出实际形状,从而大大提高工效。弯头划线环(图1)主要由中间带槽孔的两个90°平角尺、用螺丝联接成一个可调长、宽的矩形环,加上两个量角、垂
In the production of a variety of arbitrary cross-sectional shape of the manifold multi-section elbow, pipe and plane cross and any cross-sectional symmetry, the same size of the Orthotic three-way, oblique three links, crotch three links, In this way, both cumbersome and time-consuming. To this end, we successfully bend the elbow crossed the ring, do not expand the loft, the actual shape drawn directly on the pipe, thereby greatly improving work efficiency. Elbow scribing ring (Figure 1) mainly by the middle of the slotted two 90 ° square fillet, with screws connected into a long adjustable, wide rectangular ring, plus two angle, vertical