Products: Multilayer gas pipes and fittings from 16mm to 63mm / Brand: Crimp Gas / Pipe and Fittings D16 mm Description: Inlet: External diameter: 16 mm Pipe and Fittings D20 mm Description: Inlet: External diameter: 20 mm Pipe and Fittings D25 mm Description: Inlet: External diameter: 25 mm Pipe and Fittings D32 mm Description: Inlet: External diameter: 32 mm Pipe and Fittings DN40 mm Description: Inlet: External diameter: 40 mm Pipe and Fittings DN50 mm Description: Inlet: External diameter: 50 mm Pipe and Fittings DN63 mm Description: Inlet: External diameter: 63 mm.