4.1 Couplings ( 20 )4.2 Air Compressors ( 22 )4.3 Plastic Pipes - PVC / PE / PB / PU ( 21 )4.4 Hose - Rubber & Flexible ( 18 )4.5 Steel Pipes ,Stanless Steel Pipe ( 19 )4.6 Gaskets - Seals ( 19 )4.7 Pumps - Rotary Pumps ( 50 )4.8 Valves ( 31 )4.9 Hydraulic Equipment - Pneumatic Equipment ( 49 )