Through successful leakage stoppage and cladding of a new compensator, it realized on-line overhaul of a gas main pipe network of the large coke oven.

焦煤主管道鼓型补偿器严重腐蚀泄漏，通过成功堵漏和新补偿器包覆，实现了腐蚀泄漏严重的大型焦炉煤气主管网的不停产在线检修。

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The invariablenes condition of circle girth of the join-line end of the main pipe was set up and the join-lines on Y-tee to be ellipse was made certain.

建立了圆柱分支管y型三通的主管相贯线处的周长不变的条件，确定了相贯线为椭圆。

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A plurality of side barbs are distributed around the central main barb, with every fishing line on every side barb threading a plastic branch pipe of an inside lining steel wire.

在中心主钓周边分布有若干旁钩，旁钩上的鱼线穿套在内衬钢丝的塑料支管 内，塑料支管的中部通过连接件固接在基座的下部；

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