卡套接头概述 bite type tube fittings instructions
  卡套式管接头由三部分组成：接头体、卡套、螺母。当卡套和螺母套在钢管上插入接头体后，旋紧
螺母时，卡套前端外侧与接头体锥面贴合，内刃均匀地咬入无缝钢管，形成有效密封。见图 1。
卡套接头的装配 bite type tube fittings assembly instructions
安装 assembly
1 锯下合适长度的无缝钢管，去除端口处毛刺。管子端面要与轴线垂直，角度公差不大于 0.5°。如
果管子需要折弯，则从管子端面至弯曲部位的直线段长度不能少于三倍螺母长度。
1 cut the tube at right angle and de-burr inside and outside oftube end. minimum straight length of tube from
the starting point of tube bend to the tube end may be 3 timesheight of the nut.
2 把螺母和卡套套在无缝钢管上。注意螺母和卡套的方向，不要装反了。
2 set a nut and cutting ring on the tube. make sure the cuttingring and the nut are facing the fitting.
3 在接头体螺纹和卡套上涂上润滑油，把管子插入接头体，（管子一定要插到底）用手旋紧螺母。
3 lubricate fitting threads and cutting ring. insert tube end intofitting body until it is firmly seated on bottom
(fitting shoulder) and hand-tighten the nut.
4 用扳手再旋紧螺母 1-1/2 圈即可。（如果管子壁较薄，还应再多旋紧一些。）
4 tighten nut 1-1/2 turns with a wrench by holding fitting bodywith a back up wrench. (in case of thin wall tubing make-up, morethan 1-1/2 turns may be required.)

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