Principle of ZWZ3 series brake
We are china manufacturer of high quality grade 8.8, 10.9, 12.9 Threaded Rods and threaded bars in iso 898 standard. Our advantages and more services of threaded steel rods includes:
1) Wide range of diameters from 1/2" - 4"
2) Customized Length from 100mm to 12000mm
3) Good threads at 60 degree
4) Good straightness: 1mm/m max
5) Even hardness on whole bars
5) Proper mechanical properties
7) Full sets of testing equipment: Surface, Dimenstion. Mechanical properties testing
8) Fast delivery time
1. Meet the standard:
This series of brakes Anzuon size meets the GB6334-86 standard 
2. Main points:
Safe and reliable
High frequency of action
Green, non-asbestos liner
Smooth braking, no noise
3. Conditions of use
The altitude of the place of use should not exceed 2000m
Ambient medium temperature: -25-+40 degrees Celsius
Relative humidity of air should not exceed 90%
DC network with rated voltage of 220V
In a non-explosive medium, there is no gas or conductive dust that is sufficient to corrode the metal box to damage the insulation.
Outdoor rain and snow erosion or corrosive gases and media should be anti-corrosion products
4. Model meaning 
5. Dimensional drawing 
6. Parameter technology and dimension table 
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Stud Rod,Black Threaded Rod,Iso 898 Threaded Rods,Stainless Steel Threaded Rod
SHANDONG LE REN SPECIAL STEEL CO., LTD. , https://www.lerenspecialsteel.com