... .standard:EN124 3.pressure:A15,B125,C250,D400,E600,F900... Cast iron manhole coverSPECIFICATION Class B125Class C250Class D400Long ext. Frame Diam(mm ... 550450453070060075706005003529 600500453480070080957006004042 7006005053900800901138007004555 80070060661000900100154FEATURES1.Material a) Ductile Iron GGG500-7 & 400-12 b) Grey Iron GG202. Designs . a) EN124 A15, B125, C250 ...