Ductile iron sewage grate gratings

Foundry ductile iron EN124 B125 C250 D400 square/cricular frame hinge lock bitumen gully grate manhole cover 

D400 Driveway Drain Grates Drain Channels Grating and Manhole Covers
a) Ductile Iron GGG500-7 & 400-12 
b) Grey Iron GG20
Designs .
a) EN124 A15, B125, C250, D400, E600 and F900 
b) A60005 for casting design 
c)Major standards designs available 
d) As per customers' drawings or samples 
Process 
c) Molding boards 
d) Green sand with hand molding 
Coating 
a) Cold applied black bitumen 
b) Without coating 
c) Coating as per customers' requirement 
Bearing Class / Loading Capacity of Cast Iron Manhole Covers

Class Apply to Bearing Remarks
EN124-A15 Areas where only passed by Pedestrians and Bicycles. 15KN 
EN124-B125 Footways, parking lot or similar areas. 125KN HOT-SELLING
EN124-C250 The edge combinative area of vehicle road and the pavement. 250KN 
EN124-D400 Vehicle area and urban arterial road. 400KN HOT-SELLING
EN124-E600 Shipping port and parking apron area. 600KN 
EN124-F900 Airplane taxiway and huge dock. 900KN