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About Us
D&S Automatic Co.,Ltd.

D&S Automatic Co.,Ltd. ,located at the China plumbing town of Fujian Nan'an,It is a professional machine company. We supply you modern facilities,such as faucet, valve, brass fitting, cartridge, brass fittings, teflon tape and all kinds of machines. Our major service are manufacturing, sourcing, production, sales and service which includes engineer training in your factory . We sold to China, India, Brazil, Iran, Pakistan, Bangladesh, Prussian, Turkey,Uganda,Algeria, etc. Warmly welcome to visit our factories. Call us or mail us, thank you! Quality Control & Certificate All of our products R&D process and production process is strictly following the ISO9001:2008 policy. Our products Our main product range including : Complete Faucet Making Machine Valves Machine Production line Fire Sprinkler Processing Devices Teflon Tap Machine Production Line Brass Spindle/Brass Fitting Making Machine Polishing Machine Testing Machine Assemble Machine

About Us
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Our main products

Product Category
  • Complete Faucet Making Machine

    Welcome you to choose us as your professional faucet production line project .Our team will give you support from A- Z, from raw material to finish products . it is not just sellling machines( resin sand---mix machine---moulds---core shooting machine--- process machine ---polish machine ---chrome plate--- assembling machine---testing machine ---packing /delivery , it is long time coopreation with technical supporting.Our team will be there for you . Guarantee you produce good products.

    Complete Faucet Making Machine
    Complete Faucet Making Machine
  • Valves Machine Production line

    Seven spindle automatic cnc lathe machine One time can finish angle valve body, concealed stop valve body, ball valve ,etc. Full automatic, high precision. high effectifficy .

    Valves Machine Production line
    Valves Machine Production line
  • Fire Sprinkler Processing Devices

    semifinished product processing equipment,plug processing equipment,glass ball assembly machine,plug oring assembly machine,press tester.Fire sprinkler manufacturing devices.

    Fire Sprinkler Processing Devices
    Fire Sprinkler Processing Devices
  • Teflon Tape Machine Production Line

    We supply completed teflon tape production line. from ptfe powder to finish products. Our machine is sold to 90% teflon tape factory in China, and also sold to india, bangladesh, etc. quality is very good and stable. We give engineer to start machines to produce in your factory . And guarantee you can produce well.  welcome come to visit !

    Teflon Tape Machine Production Line
    Teflon Tape Machine Production Line
  • Brass Spindle Making Machine

    1. From Brass bar cutting machine to cut into small pcs. 2. Using autmatic lathe machine( full/manual) to process the thread, groove. etc. 3. Using hex machine to make the hex. We will make machine tools ,clampers according to your sample, and test machine ready for you. give samples for you confirm.

    Brass Spindle Making Machine
    Brass Spindle Making Machine
  • Polishing Machine

    Use on the hardware’s surface of copper, stainless steel, aluminum, zinc and other materials to grind and polish. By changing abrasive belts with different width and particle size according to the work piece’s toughness and smoothness, you can process your work piece quickly and precisely. It can also use with rubber wheel, cloth wheel and grinding wheel. Low working noise and power demand, easy and safe to use. Environment-friendly design prevents outgoing air flow and dust. Easy-to-clean and space-smart dust removal system can reach 95% de-dust level, ideal for dust control and recycle.

    Polishing Machine
    Polishing Machine
  • Testing Machine

    Thermostatic Fancets Comprehensive Tester

    Testing Machine
    Testing Machine
  • Processing Machine

    Welcome you to choose us as your professional faucet production line project .Our team will give you support from A- Z, from raw material to finish products . it is not just sellling machinesit is long time coopreation with technical supporting.Our team will be there for you . Guarantee you produce good products.

    Processing Machine
    Processing Machine

Our main products

Hot Product
Sand Belt Lapping Equipment
Flat Polisher Lapper Machine
Anti-frictio Testing Machine for Fire Hose
Fire Hose Abrasion Resistance Tester
Seam Strength Testing Machine for Fire Rotary
Fire Rotary Joint Seal & Strength Tester
Brass Cutting Machine
Automatic Brass Bar Cutting Machine
Automatic Ptfe Powder Slitting Machine
Ptfe Tape Cutting Machine
Salt Spray Test Machine manufacturer
Salt Spray Test Machine
Hydraulic Hot Extrusion Equipment supplier
Hydraulic Hot Extrusion Equipment
Special Machine for Process Brass Ball Valve
Brass Ball Valve Body Machine

Our news

latest News
October 11, 2021 Introduction Gravity Casting, High Pressure Casting and Low Pressure Casting Process?

What is Gravity Casting: Gravity casting refers to the process of injecting molten metal into a mold under the action of the earth's gravity, also known as casting. The generalized gravity casting includes sand casting, metal casting, investment casting, lost foam casting, mud casting, etc. The narrow gravity casting refers specifically to metal casting. The molten metal is generally poured into the gate manually, and the product is obtained by filling the cavity, exhausting, cooling, and opening the mold by its own weight. The process flow is: smelting, casting filling, exhaust, cooling, mold opening, heat treatment, and metal processing. Die casting introduction: Pressure casting is divided into two types: high pressure casting and low pressure casting. High pressure casting is a casting method in which molten alloy liquid is poured into a press chamber, the cavity of a steel mold is filled at high speed, and the alloy liquid is solidified under pressure to form a casting. The main characteristics of high pressure die casting that distinguish it from other casting methods are high pressure and high speed. ①The molten metal fills the cavity under pressure, and crystallizes and solidifies under higher pressure, the common pressure is 15-100MPa. ②The molten metal fills the cavity at a high speed, usually 10-50 m/s, and some can exceed 80 m/s, (the linear velocity of the cavity through the inner gate-the inner gate speed), so the molten metal The filling time is extremely short, and the cavity can be filled within about 0.01-0.2 seconds (depending on the size of the casting). The process of low-pressure casting is as follows: in a sealed crucible (or sealed tank), dry compressed air is introduced, and under the action of gas pressure, the molten metal enters the sprue along the riser pipe and rises smoothly through the inner runner. Enter the cavity and maintain the gas pressure on the liquid surface in the crucible. Until the casting is completely solidified. Then the gas pressure on the liquid surface is released, and the unsolidified molten metal in the riser pipe flows back to the crucible. Reopen the mold and take out the casting. It can also be said that low-pressure casting is a compromise between high-pressure casting and gravity casting. - https://www.desuautomatic.com/

Introduction Gravity Casting, High Pressure Casting and Low Pressure Casting Process?
  • September 27, 2021 Comprehensive Testing Machine Main Principles and functions of Equipment.

    The water supply system required for equipment testing consists of a hot water system and a cold water system, both of which usehigh-performance water pumps, andlt adopts fully automatic frequency conversion control, only need to manually set the water pressure value on the man-machine interface and turn on the water pump switch. Among them, the refrigeration system has two functions of cooling and auxiliary heating. When the temperature is high, the refrigeration is turned on, and vice versa. , Turn on auxiliary heat (auxiliary heat when the water temperature is low in winter). 1. The heating system provides the hot water temperature required for the test, and the refrigeration system provides the cold water temperature required for the test. The cold and hot water temperatures can be easily set and are automatically controlled by a thermocouple and PLC. The temperature control accuracy can reach ±2°C; 2. The cold water pump water supply system provides the cold water pressure required for the test, and the hot water pump water supply system provides the hot water pressure required for the test. Both the cold and hot water pressures are controlled by constant pressure frequency conversion. The closed-loop control principle is adopted and 0.5 is installed in the pressure test pipeline. The high-precision pressure sensor detects the pipeline pressure value in real time, and converts it into a 4-20mA signal and transmits it to the PLC signal acquisition module. The PLC outputs the corresponding signal to the frequency conversion according to the preset program and the pressure value set by the touch screen. Through the conversion of the output frequency of the inverter, the control of the constant pressure value of the output water pressure of the pressure water pump is realized: 3. The cold and hot supply and return water valve system is controlled by the PLC system. Through the touch screen parameter setting and the PLC built-in program, the alternate supply function of cold and hot water to the test sample can be realized, and the cold and hot water can be recovered separately. The circulating water can be reused after reheating or cooling to achieve the purpose of water saving and energy saving; 4. Drive device: The pressure used in the life test is automatically controlled by an air cylinder, and the drive head is equipped with soft materials to ensure that the pressing surface of the test sample is in flexible contact, and the effect of protecting the product is obtained; 5. Tooling and fixture: use the standard water tank required by JC987-2005: 400X175X300 (mm), the water tank has a hole inside, and the size of the hole can be changed to facilitate the realization of the joint, and obtain products of different specifications within the requirements of the test standard; 6. The electronic control system adopts PLC and touch screen, which can set the total test times, the test ratio of large/small gears, the pressing hold time, the stop water...

  • August 11, 2021 The difference between sand blasting machine and shot blasting

    The difference between sand blasting machine and shot blasting 1. The working principle is different: Shot blasting uses a high-speed rotating impeller to throw small steel shots or small iron shots out to hit the surface of the part at high speed, so the oxide layer on the surface of the part can be removed. Sandblasting is a method of using compressed air to blow out the quartz sand at high speed to clean the surface of the part. 2.Different materials used The steel shots and iron shots used in shot blasting are not actually shots. To be precise, they are small steel wires or small steel rods. They only look like shots after a period of use. The so-called sandblasted sand is just river sand, which is no different from that used for construction, except that the sandblasted sand is screened, contains less mud, and has a particle size specification. Of course, some industries are also different. For example, real steel shot is used for shot blasting in the shipbuilding industry, and metal ore (not river sand-quartz sand) is used for sand blasting. 3. Different functions: The main function of sandblasting is to remove rust and scale on the surface, such as parts after heat treatment. Shot blasting has many functions. It not only removes rust and surface oxides, but also improves surface roughness, removes machining burrs of parts, eliminates internal stress of parts, reduces deformation of parts after heat treatment, and improves surface wear resistance of parts. Pressure capacity, etc. 4. Different materials used: The steel shots and iron shots used in shot blasting are not actually shots. To be precise, they are small steel wires or small steel rods. They only look like shots after a period of use. The so-called sandblasted sand is just river sand, which is no different from that used for construction, except that the sandblasted sand is screened, contains less mud, and has a particle size specification. Of course, some industries are also different. For example, real steel shot is used for shot blasting in the shipbuilding industry, and metal ore (not river sand-quartz sand) is used for sand blasting.

  • July 13, 2021 The structure of sand slinger moulding machine

    1. The fuselage is a solid hollow frame work piece. The upper part supports the indenter part of the rotating arm. When pressing, the rotating arm hooks the fuselage so that the pressing force is absorbed by the fuselage. The fuselage and the shock mechanism are bolted together, and the rotating arm In the indenter part, the indenter is fixed on a rocker arm that can be rotated, and the indenter has a screw elevator that can be adjusted to the distance from the indenter to the sand box according to the height of the sand box 2. The swing arm controls the reciprocating movement of the cylinder piston through a hand-pulled valve to realize the movement of the positive arm and swing arm. 3. The ejection structure is composed of two ejection cylinders, connecting rods, balance shafts, ejection tables, ejection rods, etc. When the ejection cylinders are activated, the connecting rods, balance shafts, and ejection tables are driven to eject the four ejector rods at the same time. Moulding from the sand box. 4. Shock compaction structure. Adopt spring micro-vibration pneumatic compaction structure, compaction shock increases vibration. The clamping cylinder locks the vibrating cylinder when the mold is drawn, and the clamping cylinder is released when the mold is dropped. 5. Pneumatic piping system: the input compressed air is removed by air filter to remove water and impurities in the compressed air, and then lubricating oil is injected through the lubricator to supply various pneumatic components and mechanisms, and the action of the machine is realized by the hand valve console . 6. Air supply and lubrication. The machine is operated by air source as energy source and oil as lubrication. The intake pressure and oil volume are respectively adjusted by the pressure reducing valve and the oil regulating valve. When the air source passes through the lubricator, the oil is sucked into the pipeline according to the siphon principle, and the mist enters the pipeline system for lubrication.

D&S Automatic Co.,Ltd. located at the China plumbing town of Fujian Nan'an,It is a professional machine company. We supply you modern facilities,such as faucet, valve, brass fitting, cartridge, brass fittings, teflon tape and all kinds of machines. 

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