Blasting and coating are done per job: typical shop primer, intermediate and finish coats, or hot-dip galvanizing when specified. Tell us the environment (indoor, coastal, chemical, etc.) and design life so film thickness or zinc coating can be set. Appearance and thickness are checked before dispatch.

Roof and wall sandwich panel thickness depends on insulation, fire rating and local climate, not price alone. First define indoor temperature, humidity, fire needs and wind or snow load, then select profile, core and thickness. Final sizes follow the agreed material schedule.

The steel frame is usually fabricated in the plant and erected on site. Foundations, concrete and embedments are typically done by a local civil contractor. We can issue base-plate sizes, anchor layouts and embedment notes. The contract scope defines the interface.

Wind and snow loads follow the project location, the local code and the owner design brief. There is no single default number. Please provide site, basic wind pressure, snow load, seismic data and roof live load. A first estimate can use the stated building use; fabrication follows approved drawings only.

Lead time depends on drawing freeze, tonnage, coating and the production slot. After drawings are locked, standard jobs ship in agreed batches. Rush orders can be reviewed, but they do not override confirmed contracts. The schedule is confirmed in writing with the quotation.