Dumbbell, Barbell, Kettlebell, Mill Roll


We produce various classes of manhole cover and gratings in gray iron or ductile iron from Class A15 to F900 according to customer’s sample or requirement. The weights of manhole cover and gratings from 2 kilograms to 300 kilograms. We have strict quality system, with certificates of ISO9001 and EN124.

class A 15 minimum: Test 1.5 metric ton
Areas which can only be use by pedestrians and pedal cyclists.

class B 125 minimum: Test 12.5 metric ton
Footways, pedestrian areas and comparable areas, car parks or car parking decks.

class C 250 : Test 25 metric ton
For gully tops installed in the area kerbside channels of roads which when measured from the kerb edge, extend a maximum of 0.5m into the carriageway and a maximum of 0.2m into the footway.

class D 400 : Test 40 metric ton
Carriageway of roads (including pedestrian street), hard shoulders and parking areas, for all types of road vehicles.

class E 600 : Test 60 metric ton
Areas imposing high wheel loads,e.g.docks,aircraft pavements.

class F 900 : Test 90 metric ton
Areas imposing high particularly high wheel loads,e.g.aircraft pavements.

电话: 86-519-8360 7077
邮箱: info@mtrolls.com