JN Engineering offers a wide range of concave (bowl liner) and mantle suit Metso Nordberg GP cone crushers, including:
Extra Coarse S
Coarse S
Coarse
Coarse Medium
Medium Fine
Fine
Extra Fine

All JN Engineering mantles and concaves are made of manganese steel 18% Mn and 2% Cr, which give you the benefits:
Improved reduction
Cubic product shape
Even wear
Maximum life time and utilization
Lower overall operating costs

JN Engineering manganese crusher parts are available to suit
GP series:
GP100S, GP200S, GP300S, GP500S
GP100, GP11, GP200, GP300, GP500