COLOUR COATED ROOF SHEET (GALVALUME), AS PER TECHNICAL SPECIFICATION (ANNEXTURE-I, DOCUMENT NO: CAP, SELF-DRILLING SCREW (CLASS-3, ZN+ TIN) M10-16, THREAD LENGTH-25 MM. AS PER TECHNICAL SPECIFICATION (AN, ZN+ TIN) M12-24, THREAD LENGTH 55 MM. AS PER TECHNICAL SPECIFICATION (A
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