... BS 681.1-1996CoatingThe Center Sleeve and End Rings are Epoxy Coated,which is certified for portable water.Working Pressure:1 ... ±3 degrees DIMENSIONS(mm)Pipe NomPipe MaterialsOD Range (mm)Bolt Length (mm)80Ductile Iron,PVCu,Cast Iron,Steel,Cast Iron Met&Imp AC88.1 ... 2008"250Ductile Iron,PVCu,Cast Iron,Steel,Cast Iron Met&Imp AC272.0-289.0M12*21510"300Ductile Iron,PVCu,Cast Iron,Steel,Cast Iron Met&Imp ...