一、选用沟槽式涂塑管件为原件;
二、衔接管段的长度应是管段两端口间净长度减去6-8mm断料,每个接口之间应有3-4mm间隙,并打钢印编号;
三、用机械切割管材,截面应笔直管轴心,允许误差范围规范为:
1、管径不大于100mm时,误差不大于1mm;
2、管径大于125mm时,误差不大于1.5mm.
四、耐磨钢塑复合管的管外壁端面应用机械加工1/2壁厚的圆角。
五、用专用滚槽机压槽:
1、压槽时,管段应坚持水平,钢管与滚槽机正面呈90°。
2、压槽时,应缓慢进行,槽深应符合要求。
3、用规范量规丈量槽全周深度。
六、与橡胶密封圈触摸的不锈钢换热器管外端,应平坦、光滑,不能划伤橡胶圈或影响密封的毛刺,不然装影响换热器的装置与运用。
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