The purpose of the mud system is to separate the solids from the drilling fluids, although it is true that the Shale Shakers make the equipment vibrate with their motors, the Screen Shakers play an extremely important role when screening the drilling fluids; GN Solids control has managed to develop with high-quality standards with an International format following the norms imposed by the US market, API RP13C or ISO 13501, allowing the manufacture and massive sale of our meshes to the world market, little by little it has been consolidating as a successful option and benefited by the technology offered in its final product.


The GN Shaker Screen was tested by an independent third-party USA company according to API RP 13C(I-SO13501).

(Please contact GN for a detailed API RP13C testing report.)

Features of GN Shaker Screens:

  • Automatic Robot Welding of the steel frame to have better quality and consistency.
  • High-quality pretension screen for long operation life.
  • Four side tension of mesh during the heat press to minimize the gap between the top screen and support screens, in a result extending the screen life. Our competitors normally do not use any tension for heat press.
  • GN 3-layer wire meshes for API 60 and above for longer screen life, our competitors normally use 3 layers only for API 120 and above.
  • GN wire mesh supplier is an internationally famous brand.
  • The steel frame screen is repairable to save cost.
  • GN comprehensive line steel frame screen for GN shakers, MI-Swaco Mongoose, Nov Brandt Cobra, Venom,
  • VSM-300, FSI screen, Derrick 2000, 500. And we can customize any screen dimension.

ASTM Mesh and API Cut Point:

  • ASTM is short for The American Society for Testing and Materials, ASTM E11:01 mesh equals to ISO 3310- 1:2000 mesh. This method determines the cut point of single-layer ASTM screen mesh size. For shaker screen mesh, normally means the surface screen mesh size. Whilst the shaker screen is usually a composition of 2 or 3 layers, the cut point of the first layer’s mesh is not equal to the final shaker screen cut point.
  • API is short for American Petroleum Institute, “API Number” is determined by API RP13C or ISO13501, the cut point is related to the combined 3-layer wire mesh test result. So before ordering, GN will need an API number, or the cut point, to define a more proper shaker screen configuration.

GN can produce all kinds of shaker screens:

  • GN Solids Control sells around many shale shakers a year, we have shale shakers operating around the world. Using the GN OEM screen will improve your shaker performance and save your operational cost. OEM Shaker Screen for GNZS series shale shaker includes a screen for GNZS703, GNZS752, GNZS594 shale shaker, and screen for GNZJ703, GNZJ752, GNZJ594 mud cleaners.
  • Replacement Shaker Screen for Derrick FLC 2000, FLC 500, DP 600, and Hyperpool series shale shaker and mud cleaner, the screens are available in flat or corrugated screens.
  • Replacement Shaker Screen for NOV Brandt Cobra, King Cobra, Mini Cobra, Venom, LCM-2D, LCM-3D, VSM 300 series and D380/D285P shale shaker and mud cleaner.
  • Other replacement shaker screens for Fluid Systems 29×42, Kemtron/Elgin KPT series, and other shale shaker manufacturers. Customized or OEM Shaker Screens are available.

GN Solids Control has been leading the development of centrifugal decanters from 9 inches to 30 inches with high quality materials and durability, with technology and precision in the assembly, receiving good comments from our end customers every day. The centrifugal decanter that GN has been activating the increasingly efficient process industry and maximizing resources to the full.


GN 9 inches Centrifuge


GN 30 inches Centrifuge

  • Duplex stainless steel SS2304 and centrifugal casting are used to manufacturing rotating bowl, and shaft for big and small end cap. Duplex stainless steel is stronger and more resistant to abrasion and corrosion. This manufacturing process also avoid intergranular corrosion and incomplete release of stress.
  • Screw blades are manufactured as a whole piece with CNC forming lathe, leading to high accuracy of the blades and higher solids discharge efficiency
  • GN can customize screw with changing pitch for high transfer efficiency and dryer solids
  • Optimized cone and pitch with BD plate to separate dewatering section and settling section, with deeper pond depth, longer dewatering section, dryer solids and clearer water. This also increase throughput speed.
  • BD plate also helps solids discharge
  • Less energy consumption is achieved with bigger pond depth, making decanter centrifuge use less energy. This also reduces turbidity flow of liquid to make separated water clearer, less wear on end blades which makes screw last longer
  • Dual cone angle is available for specific high solid concentration materials. The rotating bowl have two cone angles, which reduced discharge resistance and increase treatment capability while maintaining clarify of water and dryness of solids
  • Discharge ports are specially made tungsten carbide with excellent anti-abrasion capability and less fragility
  • Easy opening mechanism is used so that one man can open the collection box cover for easy access of equipment
  • Hydraulic removing mechanism is built into main shaft, which reduced pulling force by 90% when removing main bearings, this helps to ensure the safety of the bearing and high precision parts
  • All the rotating parts are made with high accuracy CNC machine. After that 3 step dynamic balancing is done. One is the balancing of rotating assembly at 1800RPM, balancing at real high speed and the balancing of whole machine to ensure stable operation of the decanter centrifuge at high speed
  • Both motors are placed in one end of the decanter centrifuges for more service space and spill of slurry to impact service life of motors
  • Genuine SKF premium bearing is used for longer service life
  • Oil lubrication is used to lower bearing temperature and clean bearings
  • Real time monitoring of decanter centrifuge’s working condition for overload, bearing temperature, vibration, lubrication pressure, drive currents and screw torque and alarm will be triggered in case of unusual parameter values.

GN Horizontal Vibratory Centrifuge for Coarse Coal is used for dewatering of coarse coal in coal washing plants, and well-applied coal particle range is 0.5-5mm. The Horizontal Vibratory Centrifuge combines vibration and centrifugal force to realize high efficient dewatering performance of coarse coal particles. GN Horizontal Vibratory Centrifuge for Coarse Coal is a serialized product with the diameters of the screen basket varying from1000mm to 1600mm, which meets the processing capacity demand from 80t/h to 350t/h. After dewatering process by GN Horizontal Vibratory Centrifuge, the surface moisture on the coal is 5%-9%.



  • GN – Brand of GN Separation & Conveying
  • VC- Vibratory Centrifuge
  • 1000 – Screen basket large end diameter of Horizontal Vibratory Centrifuge


  • High recovery and low crushing rate for the coarse coal, with low power consumption per ton.
  • International famous brand vibration motor with convenient and easy amplitude adjustment
  • Wear-resistant lining for the inlet and outlet to reduced wearing to the equipment
  • All the wear-resistant parts are made of high wear-resistant materials to extend the service life
  • Main bearing adopts international famous brands such as SKF, FAG or NSK
  • Few wear parts and low maintenance cost
  • Horizontal installation taking up small area and easy to assemble & disassemble
  • Large processing capacity, and high upper limit of feed size
  • High reliability, smooth operation, and low noise

As an international brand for manufacturing Horizontal Vibratory Centrifuge for Coarse Coal, GN Company has exported products to more than 60 countries and regions in the world, and set up branches in Houston, USA, and offices in Russia. GN Company can provide clients with high-quality products and professional service. Welcome to visit GN factories, and we would supply suitable Horizontal Vibratory Centrifuge for Coal Coal according to clients’ different requirement.


GN Solids utilize a custom designed and constructed Screw Conveyor (Auger) as part of drilling waste management system. The Auger is designed with 12 feet per section which makes it to be standard spare parts for exchange with each other. The screw material utilized by GN is abrasive material which lasts longer than our competitors. The Screw Conveyor (Auger) is designed to offer an efficient, low cost, cuttings transport system for offshore and onshore drilling installations. The screw conveyor are manufactured to the highest safety standards and are fitted with protective grating or cover to prevent foreign bodies entering the conveyor system, and to of fer enhanced safety for all personnel.

Besides the Screw Conveyor, GN Solids Control also have the cuttings transfer pump for the movement of the drilling cuttings.

GN Screw Conveyor Features

The screw flights are made of wear-resistant and thicker manganese steel. According to the customer’s selection requirements, the screw flights can also be sprayed with wear-resistant coating to prolong its service life.

The reinforced frame outside of the conveyor provides high strength to the complete conveyor, which makes it suitable for horizontal or inclined installation.

The bearing seats of the screw conveyor are made of aluminum casting, with fine workmanship and stable performance.

Bearings adopt international famous brand NSK or FAG, which runs steadily and has long service life.

The screw conveyor adopts the upper cover or steel grating to quickly switch or both types cover available at the same time for customer’s option. The steel grating adopts a quick flip opening and closing form, which is convenient for observation and maintenance.

Intermediate connectors adopt small resistance intermediate bearing body to make the product feeding smoothly, uniformly and quickly in the process of operation.

The inner bearing housing is equipped with self-lubricating HWS alloy hanging bearing core with grease filling nozzle to facilitate the injection of grease, which makes the self-lubricating HWS alloy hanging bearing core more fully lubricated and prolongs the service life.

The shell cover plate is equipped with rubber sealing gasket, which can effectively prevent dust leakage during operation.

Electrical motors and gearbox are from well-known brands at home and abroad to ensure long-term stability of machinery.

According to customer’s requirement, the pull-wire switch can be installed on the conveyor to realize safety protection, and customized connection form of inlet port and outlet port are available.

The GN Sludge vacuum pump is a type of high load and strong suction capacity vacuum transferring pump, it is also called solids transferring pump or cuttings transfer pump. The unique structure design enables it work in the very tough circumstance with less maintenance. It is ideal equipment for transferring sludge with high solid content up to 80% and high specific gravity material. Vacuum pump has below featured: high efficiency Venturi device can produce a vacuum up to 10 meters water column for material suction under high air flow circumstance. It is designed with compact structure, almost no wearing parts, for high density material transferring like cuttings and oily sludge etc.


Models: GNSP-10B & GNSP-20B





1、100% aerodynamic;

  1. No power requirements, safe operation in hazardous areas, safe explosion-proof;
  2. There are no rotating parts inside the cavity;
  3. Vacuum can be maintained
  4. Can produce 25” HG vacuum of mercury (up to 10m water column vacuum);
  5. Single person operation;
  6. easy to move;
  7. Suction material, almost no wear parts.\
  8. This equipment is a pressure equipment, and each user may need to apply for approval according to the situation in each country before it can be used.

 Conveying material category:

  1. Drill cuttings from waste mud and vibrating screen, close to dry materials
  2. Mud, tail slurry and oily sludge
  3. Mud pit cleaning
  4. Recycling of hazardous waste

5, sludge, bottom of the tank

  1. Bilge cleaning of transport ships
  2. Material handling of bulk tanks and silos
  3. Sand, fine sand, and fracturing sand
  4. Diatomite
  5. Animal droppings
  6. Furnace Ashes, flour
  7. Almost known materials

Application areas:

The sludge / solid vacuum pump’s unique structural design enables it to operate in the most difficult environments and the maintenance rate is low. It can convey more than 80% of solid phase materials and high specific gravity materials at high speed. Widely used in mining, chemical, construction, offshore drilling platforms

Next, we show the materials that can be transferred in their different applications: Sludge waste and solid waste discharged from the Shale Shaker, Mud Cleaner and Decanter Centrifuge, drilling mud, recovery of hazardous waste, oil mud removed from the bottom of the tanks, coarse and fine sand, frac sand, animal waste and powdered material.
Video of the pump working : http: //