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Shijiazhuang Longteng Machinery Co., Ltd

We deliver first-class products, reliable quality and professional service for global slurry handling solutions.

Shijiazhuang Longteng Machinery Co., Ltd

20+ Years of Slurry Pump Manufacturing Experience

Longteng is a professional slurry pump manufacturer providing reliable slurry pumps, pump parts and complete slurry handling solutions. Our product portfolio includes SH, SM, SHH, SL, SG, SGH and SV series for mining, dredging and industrial applications.

Shijiazhuang Longteng Machinery Co., Ltd

Professional Slurry Pump Manufacturer

Longteng provides reliable slurry pumps, wear-resistant parts and slurry handling solutions with advanced manufacturing capabilities and professional technical support, serving customers worldwide.

OUR PRODUCTS

Longteng specializes in the design, manufacture and supply of slurry pumps, slurry pump parts and related slurry handling products for mining, dredging and industrial applications.

Horizontal Slurry Pump

hori

Vertical Slurry Pump

Gravel Dredging Pump

ZJ/ZGB Slurry Pump

High Pressure Slurry Pump

Froth Pump

Pump Part

OEM

Total Dynamic Head Calculation: A Complete Example with Clear Boundaries

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OEM SLURRY PUMP MANUFACTURING SERVICES

From pump design to final production, Longteng provides complete OEM solutions for slurry pumps and pump parts.
✓ Custom Slurry Pump Design ✓ OEM Pump Manufacturing ✓ Material Customization
✓ Precision Machining ✓ Reverse Engineering ✓ Quality Testing

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20 Years of

Slurry Pump Manufacturing Experience

Longteng Machinery Co., Ltd

Longteng Machinery is a professional slurry pump manufacturer specializing in the design, production and supply of slurry pumps, slurry pump parts and customized slurry handling solutions.
With more than 20 years of manufacturing experience, Longteng has developed complete production capabilities covering casting, heat treatment, machining, assembly and performance testing. Our advanced manufacturing processes and strict quality control systems ensure reliable product performance, wear resistance and long service life in demanding slurry applications.
From standard slurry pump supply to OEM manufacturing solutions, Longteng supports global customers with professional engineering assistance, customized materials, precision production and dependable after-sales service.
With a commitment to quality, innovation and customer satisfaction, Longteng continues to deliver reliable slurry handling solutions to customers worldwide.

Industries

Longteng slurry pumps serve global industries including mining, mineral processing, dredging, power generation and chemical processing, delivering reliable slurry handling solutions for challenging applications.

Mining

Heavy duty slurry pumps for mining operations, mineral processing and abrasive slurry handling.

Gold Mining

Reliable slurry pumping solutions for gold ore processing and tailings transportation.

Copper Mining

Durable slurry pumps designed for copper mining and mineral processing applications.

Coal Washing

Efficient slurry pumping solutions for coal preparation and wastewater handling.

NEWS&BLOG

Explore Longteng’s latest updates, slurry pump knowledge, industry trends and application guides covering mining, dredging and industrial slurry handling solutions.

2026-10-16

Total dynamic head is the head a pump must add to move liquid between defined system boundaries at a stated flow. For a steady incompressible-liquid calculation, it includes elevation difference, pressure difference, velocity-head difference, and losses along the selected path. The calculation is incomplete until the flow, liquid properties, and endpoint conditions are stated. A useful general expression is H = Δz + Δp/(ρg) + Δ(v²)/(2g) + hL. The terms describe elevation, pressure, velocity, and losses respectively. Each term must use the same length unit. A pressure in bar cannot be added directly to a height in meters. This article develops an independent worked example and explains how to turn it into a reviewable pump inquiry. The energy-balance and friction methods follow established hydraulic references. Every numerical input is an explicit teaching assumption, not a surveyed installation, a Longteng project, or a pump-performance guarantee.

NPSH Available vs Required: Build a Suction Assessment That Covers the Real Duty

2026-10-16

NPSH available is supplied by the pumping system; NPSH required is specified by the pump manufacturer for a defined performance criterion. A suitable selection needs an appropriate margin between them over the expected operating conditions. Comparing two numbers at the normal duty is only the beginning of that assessment. Net positive suction head, abbreviated NPSH, expresses the liquid's total suction head above its vapor-pressure head at a defined datum. It is usually stated in meters or feet of the handled liquid. It is not simply the pressure shown by a suction gauge, and it is not the pump's total discharge head. This guide explains the inputs, boundaries, and purchasing questions for centrifugal pumps. It uses industry definitions and independently calculated examples with explicitly assumed properties. The examples demonstrate a method; they do not establish a universal margin, an allowable suction lift, or a Longteng model rating.

How to Read a Pump Curve and Check the Proposed Duty Point

2026-10-16

Read a pump curve by locating the required flow, finding the corresponding head on the correct pump configuration, and then checking efficiency, shaft power, suction requirements, and operating limits at that same point. A curve is a connected set of performance information. Selecting the highest head or largest flow shown on the sheet does not establish a suitable pump. Before using any plotted line, verify the pump model, speed, impeller configuration, liquid basis, and revision. Then add the system requirement. The actual operating point depends on the interaction between the pump, piping, liquid, and controls, so a point marked on a quotation is a proposal that must match the installation. This tutorial follows established industry curve definitions and develops an independent numerical example. All numerical curves in the article are calculated teaching illustrations. They are not measured Longteng curves, model ratings, or a substitute for supplier-confirmed selection data.

Pump Head vs Pressure: Convert the Duty Correctly for Water and Slurry

2026-10-15

Pump head describes energy added per unit weight of liquid; pressure describes force per unit area. They are related through liquid density, but they are not interchangeable numbers. The same pressure difference represents less head in a denser liquid, while the same head represents a larger pressure difference. For a pressure-head conversion in SI units, H = Δp / (ρg). Here H is head in meters, Δp is pressure difference in pascals, ρ is density in kilograms per cubic meter, and g is gravitational acceleration. This conversion addresses the pressure component. A complete pump-head calculation may also need velocity and elevation corrections. This guide explains the distinction for incompressible liquid service and uses explicitly assumed examples to show its purchasing consequences. The definitions follow established pump-engineering references. The worked calculations are independent teaching examples, not Longteng performance data or guarantees for a particular slurry.

Pump Cavitation: Diagnose the Cause Before Replacing the Impeller

2026-10-15

Pump cavitation occurs when local liquid pressure falls far enough for vapor cavities to form and those cavities subsequently collapse in higher-pressure regions. In a centrifugal pump, the result can include noise, vibration, unstable performance, and erosion. A gravel-like sound is a useful warning, but it does not prove cavitation: entrained air, recirculation, rubbing, and bearing problems can produce overlapping symptoms. The practical task is to identify what changed, measure the operating condition, and compare the suction conditions with the requirements of the actual pump. Replacing a damaged impeller without correcting the cause can put the replacement into the same damaging service. This guide covers liquid-handling centrifugal pumps, with additional considerations for abrasive slurry service. The technical basis is established pump hydraulics and the industry distinction between available suction head and a manufacturer's cavitation-related requirement. The diagnostic sequence and examples are editorial guidance, not a model-specific maintenance procedure or a report of field testing.

Pump Impeller Manufacturing from Drawing Approval to Final Inspection

2026-10-15

Pump impeller manufacturing begins with a defined component and acceptance requirements, then follows a material-appropriate production route through forming, finishing, machining, and inspection. For a cast metal impeller, that route commonly includes tooling, mold and core preparation, melting and pouring, cleaning, any specified heat treatment, machining, and final verification. Rubber and polyurethane parts require different forming and material-control processes. The most important purchasing decision often comes before production: what exactly should the supplier reproduce or develop? A controlled drawing, a worn sample, and a request to improve performance are three different starting points. Each requires a different level of technical review. This article focuses on the impeller component rather than the design and acceptance of a complete pump. Public foundry and inspection references support the general process descriptions. The buyer checklists are editorial recommendations; available Longteng processes, records, and acceptance provisions must be confirmed for the actual order.