Custom-Made High Precision Punching Metal Part

Donrex, Inc located in Qingdao, is a world class manufacturer and supplier since 2001. We supply contracted sheet metal works, We are offer OEM/ODM products as well to reduce customers' engineering effort and accelerate the product development process to help customers get ahead of the market competition. 

Products

Donrex Group Sheet metal fabrications: 
We producing enclosures, panels, chassis for electronics, testing and instrumentation, transportation, and medical equipment. 
Our equipments Include CNC punching, CNC bending, CNC machining, welding, laser cutting, paint, powder coating, and screen printing. 
Our products used on below scope, but not limited to,
-Computer Peripherals: Networking, Storage, Communications, CD Duplication 
-Self Service Machines: ATM, Lottery, Ticket Dispensing, Movie CD 
-Gaming and Entertainment 
-Scientific Test & Measurement 
-Printing Equipment 
-Acoustics and Audio 
-Medical Appliance Devices 
-Security and Surveillance 
-Digital Display and Sign - LCD, LED, OLED 
-Flat Screen TV Mounts 
-HVAC Control Systems  

Machining equipment


Tesing machine


Packaging and delivery
We make the good control of the standard Bubble bag,carton, pallets or wooden box packaging for both air and ocean shipment. We have the fast delivery time.


FAQ
1,What material thicknesses can you work with?
  We have the in-house facility to shear, punch and bend up to 1/4" thick carbon steel.
  We can saw structural steel and shapes up to 12".
2,Do you manufacture one-of a kind?
  Yes, most definitely. If you need a part manufactured to your own specific design or would like help with   design prototyping and manufacturing engineering we have the experienced staff and equipment to bring   your ideas to life.
3, Which type of industries do you produce work for?
  The short answer is anyone that requires cost effective, quality precision sheet metal and welded      products.
 We supply precision sheet metal and welded parts to the electronics, communications, computer, lighting,  automotive, aerospace, semiconductor, medical, and vacuum industries as well as all branches of the  military.
4,What is your lead-time?
  With our design, fabrication and manufacturing skills and experience, we can efficiently exceed your    expectations and meet the time frame required. However, we guarantee that quality and service are  never compromised.
5,What finishes can you provide?
 We can provide powder coated finishes, baked enamel, normal wet process painted finishes, anodized  finishes and all common plated finishes. We also provide #8 mirror finish, #4 polish and 2B finishes on  our stainless steel jobs. Steel and aluminum can be grained to meet your requirements. We also use  bead blasting, sand blasting and tumbling to provide special finishes.

Our customers

  Donrex, Inc located in Qingdao, is a world class manufacturer and supplier since 2001. We supply contracted sheet metal works, We are offer OEM/ODM products as well to reduce customers' engineering effort and accelerate the product development process to help customers get ahead of the market competition. 

Products

Donrex Group Sheet metal fabrications: 
We producing enclosures, panels, chassis for electronics, testing and instrumentation, transportation, and medical equipment. 
Our equipments Include CNC punching, CNC bending, CNC machining, welding, laser cutting, paint, powder coating, and screen printing. 
Our products used on below scope, but not limited to,
-Computer Peripherals: Networking, Storage, Communications, CD Duplication 
-Self Service Machines: ATM, Lottery, Ticket Dispensing, Movie CD 
-Gaming and Entertainment 
-Scientific Test & Measurement 
-Printing Equipment 
-Acoustics and Audio 
-Medical Appliance Devices 
-Security and Surveillance 
-Digital Display and Sign - LCD, LED, OLED 
-Flat Screen TV Mounts 
-HVAC Control Systems  

Machining equipment


Tesing machine


Packaging and delivery
We make the good control of the standard Bubble bag,carton, pallets or wooden box packaging for both air and ocean shipment. We have the fast delivery time.


FAQ
1,What material thicknesses can you work with?
  We have the in-house facility to shear, punch and bend up to 1/4" thick carbon steel.
  We can saw structural steel and shapes up to 12".
2,Do you manufacture one-of a kind?
  Yes, most definitely. If you need a part manufactured to your own specific design or would like help with   design prototyping and manufacturing engineering we have the experienced staff and equipment to bring   your ideas to life.
3, Which type of industries do you produce work for?
  The short answer is anyone that requires cost effective, quality precision sheet metal and welded      products.
 We supply precision sheet metal and welded parts to the electronics, communications, computer, lighting,  automotive, aerospace, semiconductor, medical, and vacuum industries as well as all branches of the  military.
4,What is your lead-time?
  With our design, fabrication and manufacturing skills and experience, we can efficiently exceed your    expectations and meet the time frame required. However, we guarantee that quality and service are  never compromised.
5,What finishes can you provide?
 We can provide powder coated finishes, baked enamel, normal wet process painted finishes, anodized  finishes and all common plated finishes. We also provide #8 mirror finish, #4 polish and 2B finishes on  our stainless steel jobs. Steel and aluminum can be grained to meet your requirements. We also use  bead blasting, sand blasting and tumbling to provide special finishes.

Our customers

 

An impulse turbine is a type of Steam Turbine where the rotor derives its rotational force from the impact force, or the direct push of steam on the blades. 

The impulse turbine consists of a rotor mounted on a shaft that is free to rotate.  Attached to the rotor are a set of curved blades.  Nozzles then direct the high pressure and high temperature steam towards the blades of the turbines.  The blades catch the impact force of the rapidly moving steam and rotate from this force.

The Impulse Principle

The steam at high pressure enters through a stationary nozzle of a steam turbine, as a result the pressure of the steam is decrease and an increase in steam velocity.  As a result of increased steam velocity steam pass through the nozzle in the form of a high-speed jet. This high-velocity steam hit the properly shaped turbine blade, as a result, the steam flow direction is changed. The effect of this change in direction of the steam flow will produce an impulse force. This force cause the blade move, thereby the rotor will start to rotate.

The force applied to the blade is developed by causing the steam to change the direction of flow (Newton`s 2nd Law – change of momentum). The change of momentum produces the impulse force.

Impulse Turbine Working:

In the impulse turbine pressure drops and the velocity increases as the steam passes through the nozzles. When the steam passes through the moving blades the velocity drops but the pressure remains the same.

The fact that the pressure does not drop across the moving blades is the distinguishing feature of the impulse turbine. The pressure at the inlet of the moving blades is same as the pressure at the outlet of moving blades.

Impulse Steam Turbine

Impulse Steam Turbine

Shandong Qingneng Power Co., Ltd. , https://www.steamturbine.be