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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