The pig to receive clear caliper ball after tube, remove the clear the caliper plate pig, if caliper board did not obvious deformation, caliper qualified.
测径清管器到达收球筒后，拆下清管器上的测径板，若测径板没有明显变形，测径合格。
2
East of pig meal in the supremacy of the early 1980s to embark on large-scale operation of the road, the official Taiyazhitang board.