滤波装置的特点：符合行业标准SY/T5530要求. Accord with the stipulations in trade standard SY/T5530. 可选配双公扣合金钢短节。 Can equip with double pin alloy steel pup joint.冲管和盘根装置为盒式一体结构，便于更换。 The wash pipe and packing set are cartridge type,and it is配API4LP水龙带接头. convenient to change. Equip withAPI4LP hose union.
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