Swaged poles are manufactured from E.RW/Welded tubes of suitable lengths swaged & joined together. No circumferential joint shall be permitted In the individual tube lengths of poles. The longitudinal welds shall be staggered at each swaged joint. Swaging is done by Hydraulic Power Pack Unit A circumferential weld shall be deposit at the upper and of the joint at aslope of approximately 450 poles are manufactured by us normally conform to As per IS 2713 (P-II)-1980 and special sires poles can also be manufactured by as per customer drawings or requirements
Earthing arrangement
If earthing arrangement is required, a bolt of 10 mm dia is welded on each pole at a height of 300 mm above the planting depth or can be provided as per customer's requirement
Quality control
We have arrangement for strict quality control right from the receipt of raw material upto the final stage. The outside diameter, thickness, length of sections and the length of the pole controlled to come within the required specification.
Advantage
Steel tubular Poles are the most efficient and economical source for carrying the overhead transmission and overhead distribution lines which no other source can take place. Owing to the circular cross section, the poles with stand torsinal stresses much better. Cylindrical surface offers minimum wind resistant and due to their elasticity, can take all sorts of shocks, cyclones. Thrust lines breakage etc. for better than any other type of poles Bring light weight permits easy handling, transportation, low depth erection and less maintenance cost which insured the greatest economy of steel tublar poles.
Swaged Poles
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Based on the assumption that steel weights 7.85g/cm3 * Before making a selection of pole It is necessary to assume a suitable factor of safety has to be applied on the breaking load or the crippling load of the pole as the case may be depending on the relevant electricity rules to obtain the working load.
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Value of working load of the poles with a factor of safety of 2 on crippling load and a Factor 2.5 on breaking load are both given in tables 1 &2 In Indian standard book The user will have to calculate the working load if different actors of safety other then those stated above are applied.
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Length the tolerance of the length of section shall be follows : On the length of section + 40mm On the overall length + 10 mm.
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The mean weight for bulk supplied shall not be more than 5% below the calculated value the weight of any single pole shall not fall below the calculated weight more than 7.5%.
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Permissible tolerance on the tube thickness 10%.