A newly developed pipeline plug is composed of a central pipe, balloon, piston, spring, clamp, backplate, inside and outside joints, connecting plate and a wedge key.
开发的新型管道封堵器由中心管、气囊、活塞、弹簧、夹板、护板、内接头、外接头、连接板和楔键等组成。
The movable device mainly consists of the nut, bolt, lifting wedge, backseat, supporting seat of the clamp plate, spring and pressure plate and so on.
活动装置主要有螺母、螺栓、提升楔块、后座、座板支座、弹簧以及压板等组成。
The movable device mainly consists of the nut, bolt, lifting wedge, backseat, supporting seat of the clamp plate, spring and pressure plate and so on.
活动装置主要有螺母、螺栓、提升楔块、后座、座板支座、弹簧以及压板等组成。
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