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我厂已生产的锻造阀(包括直通阀、止回、针形阀)中有七种规格的阀体、阀盖是采用模锻件。七种锻造阀的阀体模锻件都不相同;而其阀盖模锻件则合并为小大两件如(图1、2),和二种不同的阀盖模锻件(图3)。
There are seven kinds of valve bodies in the forged valves (including straight-through valves, check-back and needle valves) that I have already produced. The valve covers are made of forgings. The valve forgings for the seven forged valves are all different; the valve forgings are grouped into small and large pieces (Figure 1,2) and two different bonnet forges (Figure 3).