Installing bolts allowed to use gas cutting bore hole and never more than two gaskets pad not sexual bolts, exposed screw bolt length of not less than 2-3 deduction.
Installing bolts allowed to use gas cutting bore hole and never more than two gaskets pad not sexual bolts, exposed screw bolt length of not less than 2-3 deduction.
安装螺栓孔不允许用气割扩孔,永乆性螺栓不得垫两个以上垫圈,螺栓外露丝扣长度不少于2～3扣.