上QQ阅读APP看本书，新人免费读10天
设备和账号都新为新人
9.2 Rail Chair
General Items
9.2.1 The allowable deviation for installation of rail chair shall comply with the requirements in Table 9.2.1（see Figure 9.2.1）.
Quantity to be checked:100%.
Inspection method:See Table 9.2.1.
Table 9.2.1 Allowable deviation for installation of rail chair
Figure 9.2.1 Schematic drawing for installation of rail chair
1，2-rail chair；3-horizontal base line of rail chair（center line）；4-horizontal center line of electric arc furnace；
5-base mark of elevation；6-longitudinal base line（center line）of rail chair（at electrode side）
7-longitudinal center of electric arc furnace