GPB-90/3NB （三缸） /5NB （五缸）系列往復高壓活塞泵、柱塞泵、泥漿泵、高壓註漿泵 ，理論流量 0.2 — 120m3/h， 壓力3--80MPa。允許24小時連續工作。
3NB、5NB系列具有自吸能力。
主要零部件：機座（材料HT250）；泵體（材料：1Cr18Ni9Ti、2Cr13、 碳鋼化鍍鎳-磷合金防腐層）經熱處理，避免疲勞破裂；曲軸（材料：35CrMo、42CrMo）經調質氮化/中頻淬火處理、強度大、硬度高、耐磨耐用；柱塞（材料：超性陶瓷、噴焊鎳合金Ni60耐磨耐腐層）；盤根密封（采用進口芳綸或碳素纖維）。 閥組型式：錐閥、API閥，AR閥，耐磨閥等。經特殊處理，耐磨耐用。
適用於：巖土工程鉆探，高壓灌漿，高壓註漿，高壓旋噴地基處理，地質鉆探，石油鉆井鉆探等生產工藝。
高嶺土泥漿泵，泥漿泵，純水泥漿泵，二氧化矽漿噴霧液泵。
Water flooding（injection） pump used in oil field Application: To be used as special pump such as water flooding pump used in oil field and mining field, hyper pressure pump, ejection pump, dephosphorizing pump, high pressure cleaning pump, moistening pump, spraying pump, flowing pump, thick mud pump, sludge pump, pump for liquified carbon dioxide, detergent sludge pump, chemical pump, hydraulic pressure pump, oil transition pump, sea water pump etc. Absorbing quintessences of domestic pump industries, it has characteristics in advanced design, compact structure and compact pump body, high efficiency, steady run, safe and reliable performance, simple operation, excellent manufacture and nice appearance. There is safety regulating valve in every type of such pump. Pressure can be regulated freely. Oil temperature and pressure are protected automatically. Assembly type: horizontal or vertical. Transition type: electric motor or diesel; There are 4 ways of speed regulation,ie: by gear box, belt wheel, electromagnetic or frequency-changing. Main parts: Machine seat (material used: HT250) Pump body (material used: 316, 1Cr18Ni9Ti, 2Cr13, Nickel-phosphorus alloy galvanized carbon steel layer) Heat treatment is applied to prevent fatigue crack. Crank shift (material used: 35CrMo, 42CrMo) Nitrogen hardening treatment is applied to attain strong strength, high hardness, durable and corrosion resistant feature. Plunger (material used: superior ceramic, Ni60 alloy nickel-coated wear resistant and anti-corrosive layer). Packing seal imported imitating polyamide fiber（aramid fiber） or carbon constructional fiber are used. Splashing form of lubrication is used. Valve types: conical valve, plate valve, ARN valve and combined valves. They are wear resistant and anti-corrosive after special treatment. Every pump is equipped with safety regulating valve. Pressure of pump can be regulated freely. Alarm protection for temperature of lubricating oil and inlet and out pressure of the pump are equipped.
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