... rudder blade, quill shaft,anvil stand,support roller,cast steel joints for bridge,gear,integrated chassis,steel bracket,rudder pintle, sternpost ... rudder blade, quill shaft,anvil stand,support roller,cast steel joints for bridge,gear,integrated chassis,steel bracket,rudder pintle, ... 8 tons of electirc arc furnace(maximum casting 28T) and two 20 tons high-frequency furnace.The annual capacity is 20000 ...