5　Rolling Mill

5.1　Base Plate

General item

5.1.1　The allowable installation deviation of rolling mill base plate shall be in accordance with those specified in table 5.1.1.

Inspection quantity:total number inspection.

Inspection method:it should be in accordance with those specified in table 5.1.1.

Table 5.1.1　Allowable installation deviation of rolling mill base plate

5.1.2　When measure the elevation and levelness of single mill housing base plate，the measurement shall be carried out on the top surface of rolling mill base plate（figure 5.1.2-1）；When install the tandem mill base plate（figure 5.1.2-2.），the levelness directions of the adjacent mill base plates shall be different.

Figure 5.1.2-1　Single stand rolling mill base plate installation and measurement plan

1-Precision level；2-Straight edge；3-Level meter；4-Piano wire；5-Plumb bob；6-Inside micrometer；7-Center target；8-Entry side base plate；9-Exist side base plate；A-Centerline measure along rolling line direction；B-Horizontal centerline measure and parallelism measure of base plate at exit side relative to rolling mill centerline；C-Parallelism measure of two base plates；D-Elevation measure

Figure 5.1.2-2　Tandem mill base plate installation and measurement plan

1-Base plate；2-Straight edge；3-Level meter