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Power Transformers Special Transformers
Box-Substations
Switchgear Reactors
Profile and equipment 
holm profile
Such holm profile applies the hot dip galvanized sheet, that exempted from surface coating processing
12.5mm as the modulus on the flange, 500mm is a hole unit, there are 3-￠5.3 and 1-￠8.4 holes, assemble directly without tapping screw
The profiles are widely used in the bearing frame structure of low voltage switchgear, power box and distribution box
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- features
- parameter
- application
- pictures
- certificates
- Processing technic
1. Material: DX51D+2275 hot dip galvanized sheet
2. technical process
1) strip cutting: the raw material is rolling plate, the strip is cut according to the width of the spares
2) rolling: in the special purpose machine
The single flange profile (50504) by 24 roller
The double flange profile (50505) by 28 roller
Roll the entire strip at one time and do the first cut when discharging, which still can do the second processing
3) clipping length: on the smoothing mill
4) punching: on the 160 tons bending machine by the special punching mould, the effective length of the special punching mould is 2200mm, and all the holes are punched for two times to ensure the accuracy of aperture and pitch. There are accumulative location in the punching mould
5) straightening: the parts will be a little deformed after punching, the special straightening machine solve such problem .
- The profiles are widely used in the bearing frame structure of low voltage switchgear, power box and distribution box.
- State Quality Supervision and Inspection Center
