我队原来使用的沉砂管接头上、下端均车有丝扣,沉砂管下端也车有丝扣,加工麻烦,消耗量大,平均每月最少消耗一个沉砂管接头和一根沉砂管.特别是修配加工力量弱的单位,常因供应不上而影响生产.为此,我队三分队修配组,从1965年开始加工了卡簧式沉砂管接头和无丝扣沉砂 The grit connectors originally used by our team are threaded on the upper and lower ends, and the grit pipes are also threaded on the lower end of the grit tube. The processing trouble and the consumption are large. On average, at least one grit connector and one grit are consumed every month. Pipes, especially those with weak processing and processing power, often affect production due to lack of supply. To this end, our team’s three-pronged repair team has been processing reed-type grit hose fittings and wireless grit since 1965.