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Practical notes on profiles, steel grades, coatings and tolerances, written for the people who specify and buy steel for ground-mount solar and pre-engineered buildings in India.
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Profile, grade, coating and tolerance. Get these right at the specification stage and most of what goes wrong on site never happens.
Profiles
The four roll-formed profiles aren't stylistic choices. Each geometry solves a specific structural problem, and PEB roofing and solar MMS pull from opposite ends of the toolkit.
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Materials
Purlins for industrial sheds and solar tables start from the same coil, but the grade is fixed by the coating system the coil runs through.
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Coatings
Four coating systems, four coating-mass conventions. Picking by name alone skips the number that actually determines service life.
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Quality
What the tolerance tables actually say, why straightness and twist matter more than most buyers expect, and the questions to ask a supplier before you order.
Read the guideIf you are weighing a specification decision and cannot find the answer here, ask us directly. We would rather talk it through before the order than after the delivery.
Ask our teamHello. Send us the profile, size and quantity you need and we will come back with feasibility, lead time and a price.Team UNIKLAET