The elbow shall be bolted to the floor of the wet-well and be so designed as to receive the pump connecting flange without the need for any bolts, nuts or clamps.
弯头应该用螺栓固定在湿井地面，并且设计成具有不需要任何螺栓、螺母或皮带即可连接泵设备的连接法兰的能力。
Heating pipe for fuel oil tank leaked on the flange position which under the floor front the boiler, to be renewed.
在锅炉前部底处燃油柜中加热管的法兰盘处漏，需换新。
Heating pipe for fuel oil tank leaked on the flange position which under the floor front the boiler, to be renewed.
在锅炉前部底处燃油柜中加热管的法兰盘处漏，需换新。
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