独特的柱形设计在每一头都有对角线支撑，使其与上下楼层通过螺栓进行连接。
The unique column design has diagonal bracing at each end and tabs that bolt into the floors above and below.
安装采油树是要对角上紧螺栓。
Make up and tighten the bolts diagonally when the X-tree is installed.
当液力端连同背板位置调好之后，4个螺栓以对角方式拧紧，直到合适为止。
When the hydraulic end position together with the back well after the transfer, four bolts to tighten the diagonal way, until a suitable date.
四只螺栓要对称地成斜对角形式依次收紧。
The four screw bolts should be tightened up in turn in a symmetrically diagonal position.
套筒与新旧螺栓之间采用对角焊接。
The opposite Angle welding is adopted between the sleeve, the new bolt and the old bolt.
套筒与新旧螺栓之间采用对角焊接。
The opposite Angle welding is adopted between the sleeve, the new bolt and the old bolt.
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