Energy Saving / High Efficiency / Environmental Protection

The twin screw pump can completely replace other pumps, such as centrifugal pumps, sliding vane pumps for high-viscosity liquid transportation. 

Screw pumps are widely used in food, oil & gas, shipbuilding,  metallurgy, papermaking, printing and dyeing, chemical industry, fertilizer, pharmaceutical and other industrial sectors.

Stable Pressure And No Pulsation

Stable conveying pressure and constant flow rate. No pulsation or stirring medium, continuous and smooth supply.

Low noise and long life

Low vibration, no direct mechanical wear, low noise and long service life.


Excellent self-priming performance. Even if the conveyed medium has a high viscosity.

Wide Range Viscosity And Property

Convey extremely high-viscosity chemical materials and transport medium in high temperature, corrosion, etc.

Twin screw pump


The screw pump is by far one of the most ideal conveying pumps for conveying high viscosity, gas-liquid mixed, and liquefied medium.

It can realize flow regulation under constant pressure, suitable for frequency conversion control, and the effect of energy saving and consumption reduction is remarkable. Besides, the twin screw pump can be designed as a heat preservation and sealed cooling system, suitable for medium transportation in high temperature, corrosion, abrasion and other occasions



Crude oil transportation, oil and gas mixed transportation, LPG filling, polymer, heavy oil, asphalt, fuel oil, grease, lubricating oil, petroleum additives, gasoline, kerosene, diesel oil, various resins, etc.


Glycerin, sorbitol, cosmetics, shampoo, facial cleanser, toothpaste, soap, laundry powder slurry, titanium dioxide, ink, paint, latex paint, white glue, various high-viscosity materials, polymers.


All kinds of lubricating oil, fuel oil, hydraulic oil, water glycol, etc. Fit for transferring high-temperature and high viscosity material. 


Chocolate, milk, dairy products, fruit juice, jam, pasta sauce, syrup, honey, beverages, condiments, vegetable oil, soy protein, xanthan gum, starch, yeast liquid.


Chemical Fiber, Shipbuilding, Coal Tar Transportation,  Pharmaceuticals, Hydropower plant, Thermal power plant, Oil depot terminal, etc.

glue pump, Food Pump,Dairy Pump, multi screw pump, honey pump, positive displacement,Glycerin Pump

BY2GXB Stainless Steel Pump

asphalt pump, Bitumen Pump,Emulsion Pump

High Temperature Fluid Pump

cargo oil pump,marine pump,fuel injection pump,Main Engine Lube Oil Pump,waste oil transfer pump,stripping pump

BY2GS Double Suction Pump

Asphalt Pump, Heavy Oil Pump, high-efficiency pump

BY2G High-efficiency Pump

In a word, the twin-screw pump can efficiently transport a variety of high and low viscosity mediums, especially the medium that do not allow stirring and the media that are easy to vaporize.

Medium conveying viscosity

≤ 5000000mm2/s

The medium conveying temperature

-40 ~450℃

Total flow range


Total pressure range


Twin screw pump manufacturer


We pay much attention to the spirit of the contract, and we can unconditionally solve any quality problems with the pumps sold. 

Pre-sales consulting service
We recommend suitable products according to the actual working conditions and needs of customers. Pumps can also be developed and designed according to needs, and customized services can be provided. During the epidemic, we also provide remote detection technical support.
Strict quality control
From raw materials to the production process before leaving our factory, all performance indicators are strictly tested, and the professional QC team controls each process. Product quality is our foundation.
After-sales service
Products sold, the quality conditions of them are still tracked throughout the using process, and our technicians will guide the installations and uses throughout the process. We promise that we can unconditionally solve any quality problems with the pumps sold. 
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Twin screw pump manufacturer

01 BaoSteel Metallurgy

Affiliated with LMM Group. Since our establishment 15 years ago, we have focused on the iron and steel metallurgy industry, high-end equipment manufacturing industry, green food industry and other energy-saving and emission-reduction health industries.

02 Reliable partner

We have many overseas warehouses in Europe, the United States, Mexico, etc., and partners are all over the world. Our goal is to contribute to a sustainable future together.

03 Quality control

The factory has a number of professional CNC production equipment. From processing and assembly to quality inspection, it is strictly controlled in accordance with international first-class standards to ensure the best product quality.

04 Technology

Independently develop and design of energy-saving screw pumps with professional intellectual property rights.

05 Professional

A team of senior engineers with more than 20 years of experience in the industry.

Energy-saving Case

Twin screw pump

Two Screw Pump

One of our client: An oil refinery used a centrifugal pump to transport high-temperature oil slurry, which required a pump unit of 37kW to drive.

After switching to our twin screw pump under the same working conditions, it can be easily used with only 22kW.


First of all, the speed of the pump should be determined according to the viscosity of the medium being conveyed. At different working temperatures, the viscosity of the medium is different, and it is necessary to determine the maximum medium viscosity that may occur at the current working temperature. If the actual viscosity is higher than the estimated viscosity, there may be insufficient power.

According to the viscosity of the medium at the working temperature, the rotation speed n of the pump is determined: generally, when V≤1000mm2/s, n=1450r/min is allowed; when V≤3000mm2/s, n=750~950r/min is allowed. When V>3000mm2/s, n=600~750r/min is allowed.

Please carefully consider the NPSH value of the pump and the NPSH value of the pipeline; the higher the viscosity, the more attention should be paid. Generally speaking, when the viscosity exceeds 1000mm2/s, the inlet resistance of the pipeline should be calculated before selection. If the inlet resistance does not meet the requirements, it will cause damage to the pump. Therefore, remind the user to calculate or submit it to the technical department of our company for calculation.

When high-viscosity materials are transported in the pipeline, it should be noted that if the pipeline resistance is too large, the load will increase sharply, and the conventional shaft power calculation will cause the problem of insufficient power. When handing over to our company for calculation, the user should provide the corresponding inlet pipeline information, including the pipeline length, height difference, filter elbow tee and other accessories, and our company’s technical department will provide the selection.

In order to facilitate users to configure pipelines, the R&D department of our company has developed pipeline selection software, which saves a lot of calculation time and provides convenience for users.

The model of the pump can be determined according to the flow rate, the pressure difference between the inlet and the outlet, the viscosity of the medium and the speed of the pump.

How to determine the model of the pump is further explained as follows:

2.1 According to the flow rate and pressure, determine whether to choose a double-suction product or a single-suction product.

Note that as long as the conditions are met, try to use single-suction products, because single-suction products have a simple structure and are easy to load and unload.

Generally speaking, when the flow rate is not large and the pressure is not high, the single-suction product (ie BY2G type or BY2GX type) is used; on the contrary, when the flow rate is large or the pressure is high, the double-suction product (ie the BY2GS…series) is used. . The single-suction product has a simple structure and is easy to maintain. It is preferred to use it as far as possible.

2.2 Determination of sealing form.

What kind of sealing form is adopted depends in many cases on the needs of the working conditions or the user’s preference. However, it should be noted that the use of packing seals will produce more or less trace leakage. Leakage that meets the requirements of industry standards and national standards is allowed, but when transporting toxic and harmful liquids, it is forbidden to use packing seals. such substances, double mechanical seals should be used to achieve long-term zero leakage. For the transportation of high-viscosity chemical materials, if there is no suitable sealing liquid, the packing seal should be used to realize it. Otherwise, the mechanical seal may be scrapped in a very short period of time due to the inability to obtain timely cooling, or be affected by high-viscosity material’s effect and fail.

2.3 The heat preservation method and installation method are the relevant structures of the pump selected by the user according to the conveying needs of the medium. When the user does not make a request, our company will produce according to the content of the default item.

2.4 Bypass valve, which plays the role of overload protection in the pump unit. It is configured according to the user’s needs. Our company will not configure the bypass valve if the user does not ask for it. We recommend using other methods to protect the pump unit from overload, such as: automatic shutdown of the motor when the motor is overloaded, pressure relays in the pump discharge pipeline system and installation of solenoid valves, etc., which are simpler, more reliable and more sensitive.

The motor is the most commonly used driver for the pump unit. After selecting the pump specification, find out the shaft power N corresponding to the flow rate of the pump of this specification under the working pressure P from the table according to the corresponding viscosity V. With the shaft power, the motor power can be determined.

The optional motor power Nm should be slightly larger than the found shaft power N. When the power is relatively small and the pressure is relatively low, the reserve should be larger. The applied power reserve is Nm≥K·N, and the K value is shown in the table below. With the motor power, the model and specifications of the motor (or geared motor) are determined according to the explosion-proof requirements and other conditions required by the user. After the user selects the pump, please ask us for the unit size of the pump and motor required for the foundation construction design.

Determine the model of the drive

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