Bao Ji Shi Zhong Nan Pump Co., Ltd.

Bao Ji Shi Zhong Nan Pump Co., Ltd. presents its company name as 宝鸡市中南泵业有限公司 and identifies a location in Jintai district, Baoji. Its company introduction describes development, manufacture and sales of industrial pumps and petroleum/chemical mechanical and electrical equipment, including PNB water-spray plunger mud pumps, injection and well-washing pumps, 3DS electric reciprocating pumps, high-pressure cleaning equipment and spare parts.

A July 2025 Jintai district public report separately names the same company as an industrial-pump and petroleum-equipment development and sales business. That record helps identify the entity; it does not establish a particular pump’s hydraulic performance, current production capacity or export certification. Match the Chinese company name, assembly location and inspection location to the quotation.

Ask whether the price covers the hydraulic pump only, the pump and drive on a common base, or a complete skid with controls, accessories and commissioning. The catalogue names several kinds of equipment; that is not evidence that every photograph or every customer application includes the same supply scope.

The 3ZWG catalogue sheet describes a driven high-pressure cleaning pump with a crankshaft, connecting mechanism, crosshead and plunger liquid end. It shows directly connected motor configurations and identifies different motor, inlet and outlet sizes. Three individual catalogue rows below are useful starting points because each associates a flow, pressure and motor rather than joining unrelated series maxima.

Treat these as published catalogue points, not an independent test or a guarantee at your nozzle. Send the desired flow and working pressure, hose length, nozzle arrangement and permitted pressure loss, then obtain the selected pump curve or performance schedule, drive details and pressure-control arrangement. Confirm the operating cycle and permissible speed before choosing a variable-speed drive.

The separate 3JX sheet concerns a cleaning package with a pump, petrol engine, water tank, high-pressure hose, spray gun and travelling mechanism. Its component table lists a 32W-1 pump and separate maximum-pressure and maximum-flow entries; those separate maxima do not prove that they are delivered simultaneously. The priced package should identify its actual engine, pump, hose, nozzle, tank and accessories.

The 3JX introduction distinguishes the assembled machine from the pump component. Its tank, hose, travelling equipment and engine change transport, site operation and maintenance needs. State whether the unit is expected to travel independently, operate from a vehicle or remain at a fixed site; identify lifting, mounting and storage requirements on the package drawing.

For pipe or vessel cleaning, provide the deposit, access opening, pipe diameter, hose route and intended cleaning tool. For surface cleaning, identify the surface material and finish that must be preserved. The company’s application descriptions include cleaning, descaling and removal work, but they do not establish an acceptable pressure for every surface or a safe working procedure.

Confirm the hose and fitting pressure ratings, nozzle selection, guards, control location, pressure relief, emergency-stop arrangement and operating instructions with the system designer. Ask who supplies the water source, drainage or recovery equipment and operator training. A catalogue’s travelling machine photograph cannot settle those responsibilities.

The 3ZS/5ZS introduction describes horizontal three- or five-cylinder, single-acting plunger reciprocating pumps. It names 5ZS400, 5ZS220, 3ZS220, 3ZS132 and 3ZS90 base sizes and discusses water injection, drainage, high-pressure cleaning and other high-pressure liquid duties. Its described arrangement includes a skid, inlet/outlet air chambers and an outlet pressure gauge, with electrical protection functions available according to the order.

The company also names 3DS electric reciprocating pumps and shows 3DS60, 3DS90 and 3DS90A catalogue layouts. Obtain a model-specific, issued duty sheet before selecting: some published 3DS sheets and the 3ZS/5ZS article use flow labels or headline ranges that do not consistently match their tables. A buyer should request an unambiguous flow unit, pressure, speed, plunger size and motor on the same working row rather than calculate an assumed rating from the series name.

An injection line needs its continuous and changing process-pressure requirements. A pressure-test order needs its fill, pressurisation and hold stages, volume and control method. A cleaning order needs the nozzle’s actual operating flow and pressure. Give those operating cases separately and ask for a suitable pump, drive and regulation arrangement for each.

The high-pressure reciprocating-pump article describes a motor, coupling, reduction or speed-changing drive, transmission, pump head and common base. It discusses alternative liquid-end materials and valve, packing and plunger components. Its list of steels and non-metallic materials is a selection menu; it is not a material certificate for every assembly.

Provide the liquid name, concentration, temperature, density, viscosity, corrosiveness and solids, plus inlet pressure and supply arrangement. The 3ZS/5ZS article mentions specially configured liquid and suspension duties with particles not larger than 1 mm. That statement is confined to its described selectable configuration; it does not qualify every Zhongnan pump for abrasive mud or a particular chemical.

For a PNB mud-pump enquiry, include the slurry concentration, particle distribution, abrasiveness, settling behaviour and operating cycle. For a replacement liquid end, supply the existing nameplate, plunger dimensions, valve and packing identification and installation drawing. Request a parts list and maintenance access plan for the exact model, especially where an older base or drive must remain in service.

Zhongnan’s high-pressure article refers to reciprocating-pump technical and test standards without editions. The national standards catalogue identifies GB/T 9234-2018 for power reciprocating pumps and GB/T 7784-2018 for their test methods as current. These references can frame a contract’s technical and test discussion; mentioning a standard is not certification or evidence that a particular supplied pump has passed it.

Agree the applicable standard and edition, test liquid and conditions, working points, measured power and delivered flow/pressure, leakage observations, instruments and acceptance criteria. Request results tied to the delivered pump’s identification. Define any inspection witness, dimensional checks and liquid-end material documentation separately.

The 3ZS/5ZS entry offers control functions including overpressure, overload, phase loss, pressure measurement, alarm and automatic stop. Ask for the priced control-panel schedule and its wiring, setpoints and alarm/trip logic. An optional function in an article is not an installed protection feature. Any hazardous-area electrical equipment and complete-system requirements need their own application-specific documentation.

Use the catalogue direction to identify the starting equipment, then attach a duty schedule and the supply boundary. This lets the supplier respond with a specific pump and drive rather than a generic high-pressure range. Include delivery destination, electrical supply or engine requirement, installation constraints and the documents needed for acceptance.

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