Portal steel is common when the roof must close quickly and racking or canopies may change. Concrete is often familiar for local fire, acoustics and civil crews. The choice depends on span, crane, programme and organisation, not a vague unit price.

Steel members are shop-made; foundations stay with local civil works. Concrete keeps more time on site. When two prices differ, align cladding, crane beams and erection first.

No universal cost factor is given, and no span is the only standard. Leave the first-phase gable ready if an extension is likely.

Compare schemes with use, size and crane data. Area without height only supports a rough talk.

Tiankai Southeast fabricates marked members from approved drawings and supports erection by mark number. Sizes, loads and delivery follow the confirmed design file and contract; this page does not turn uncalculated tonnage, thickness or time into a promise.