花管生产，一般用离心法比较容易，我厂排水管是悬辊法生产，为了满足用户的需要，我们在悬辊工艺上进行了试验，经过分析研究，我们决定用模上固定销子的方法生产，具体做法如下：1．根据用户对花管孔数量的要求，在模具上分布均匀地打0145mm的圆孔。打孔的位置首先要考虑拆装 In the production of tubes, the general method of centrifugation is relatively easy. Our factory’s drain pipe is produced by the suspension roller method. In order to meet the needs of users, we have conducted experiments on the suspension roller process. After analysis and research, we decided to use the fixed pin on the mold. Method of production, the specific approach is as follows: 1. According to the user’s requirement for the number of flower holes, a 0145mm round hole is evenly distributed on the mold. The location of the hole must first consider disassembly