Specialized Pipes & Fittings SITS is a supplier of specialized, tailor-made and coated materials for turnaround/shutdown jobs. Specialized Pipes & Fittings SITS supplies specialized, tailor-made and coated materials for turnaround/shutdown jobs, especially pipes larger than 48″. Holding stock in UAE. Pipes – SMLS, ERW, SAW, EFW Tubings Round Bars, Hex Bars, Hollow Bars Plates, Sheets Valves – Ball, Gate, Globe, Check Fittings – Buttweld, Forged, Branch Flanges Get a Quote