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Conical columns taper ratio 10 mm/m  

Description

Conical with circular section, taper ratio 10 mm/m, manufactured under certified quality check according to ISO9001 by authorised processing centre according to DM 14/01/08, obtained by cold forming of trapezium of pressed steel plate and subsequent external longitudinal welding carried out by approved automatic process (submerged arc) and welding check according to EN ISO 3834.

Restrictions on dimensions:
max  length in one section 12.8 m
max diameter  208 mm
minimum diameter 60 mm
plate thickness , 3, 4 mm

Protection against corrosion by means of hot dip galvanisation obtained with the following cycle: degreasing; pickling, washing, fluxing, pre heating; hot dip galvanization in melted zinc bath at 440÷450°, with minimum percentage of zinc into the bath ³ 98.5%.
Coating obtained according to UNI EN ISO 1461 with minimum thickness 55 microns et average 70 microns.

External painting, if any, with colour from our colour card, rough effect, obtained with thermosetting powders cycle including: cleaning from zinc coating burs; smoothing of the surfaces by means of a light mechanic device; cleaning of the surfaces in order to eliminate grease or dirty and create a good adherence base; application by means of electrostatic spray of polyester powder suitable for galvanized surfaces for outside installation, in order to reach  60/80 micron thickness; polymerization into oven at constant temperature of approx. 200° for 40-50 minutes, package for each column, by banding with tissue 100% polyester, (no pluriball), in order to avoid damages during the handling phase. The characteristics of the obtained coat will be: average thickness  60 micron, resistance to checkering test  ISO2409, resistance to crash test to UNI8901

The columns will be CE marked according to the standard in force (DPR246/93, 89/106/CEE; 93/68/CEE). The label on each column must quote: standard reference EN40-5, manufacturer’s identification, certificate number of the authorization to the mark CE CPD P029, year of marking, product code, and order number reference.

To design lighting column You need to know the following data:
– design wind speed
– features of the surrounding landscape that is ground roughness category 
– height  up to the lighting source 
– number, type, dimensions and weight of the fixture to be installed 
– fixture arrangement  (post top; or brackets)



Standard

STRAIGHT COLUMN
Columns, provided to be fixed to the basement by direct burying, are completed of the 3 works for electric wiring at base, cable entry slot, earth device.,slot for junction box.


In order to choose the suitable model You need to know: height up to the lighting source ; arrangement (post top or with bracket, …), number and type of lighting fixture to be installed; installation site.

CURVED COLUMNS
Columns, provided to be fixed to the basement by direct burying, are completed of the 3 works for electric wiring at base, cable entry slot, earth device., slot for junction box.
Bending is carried out on purpose made punches according to the shape to be obtained.
Double brackets are made of two single brackets coupled by welding carried out by qualified welders.