A wide variety of options is available like sleevelock, one-way and straight-thru designs, release clamp with chain, etc.
选择范围广，如套筒锁、单向关断、直通式及带链条的释放夹等。
2
By adopting some technology of advanced detection, adding temporary invert, sleeve valve pipe and lock foot bolts, the construction of the tunnel is completed safely and successfully.