Steel Ring Stiffness Testing Machine
Conveyor sprocket Co., Ltd. , http://www.transmissionsprocket.com
1.  Performance Characteristics:
l Perfect suitable for metal pipe, welded steel pipe, seamless steel pipe, FRP and other material flatting test.
l Four-column frame structure with superior rigidity and compact structure
l By using the high-speed bi-directional hydraulic cylinder which has a wide range of stroke adjustment makes test more efficient.
l The hydraulic system uses pressure servo technology and thus more energy efficiency.
l GDW series is an economical choice for you to doing flatting tests. You can observe the scale plate which attached between upper and lower platen to measure the deformation. When the deformation of specimen reaches your requirement, you can stop the test by operating the testing machine.
l Otherwise, GDW-Z series is an intelligent choice for you. You can start or end the test by operating the computer. When the deformation of specimen reaches the value you have set in the software, the testing machine will automatically stop. And it can simultaneously display test data and draw the test curves.
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2.  Applications:
l Metal pipe, welded steel pipe, seamless steel pipe
l FRPÂ
3. Â Â Basic Testing Operating:
3.1Â GDW Series Ring Stiffness Testing machine
i.         Put the pipe specimen on the under plate.
ii.         Operate the testing machine to begin the test. You can observe the scale plate which attached between upper and lower platen to measure the deformation.
iii.         When the scale plate reading reaches the deformation you require, then you manually stop the test.
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3.2Â GDW-Z Series Computer Controlled Ring Stiffness Testing MachineÂ
i.         Put the pipe specimen on the under plate.
ii.         Enter the specimen size (like pipe OD, wall thickness and etc.) into software, set the value of deformation of specimen you require in the software and then click begin.
iii.         The testing machine starts automatically. The software can simultaneously display test data and draw the test curves. You can also adjust the test speed by computer.
iv.         When the deformation of specimen reaches the value you have set, the testing machine will automatically stop.
v.         After the flatting test has done, the upper plate will return to the initial position and wait for another flatting test.Â
Main Specification
GDW-250
GDW-250Z
Capacity
250kN
Accuracy of Deformation
/
0.50%
Distance Between upper and lower Compression Plates
60-700mm
Flattening Platens Width
1200mm
Distance Between Columns
230mm
Piston Stroke
650mm
Max. Testing SpeedÂ
150mm/min
300mm/min
Pipe Surface
Uncoated and not marked
Pipe Temperature
Ambient
Machine Type
Hydraulically operated press
Dimension of Load Frame
900mm*560mm*2400mm
Power Supply
AC 380V 50Hz 3-phase
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