... material of carbon or low alloy steel. Product Name: riding wheel/Marine rudder/shaft/ sternpost system, such as rudder blade ... , quill shaft,anvil stand,support roller,cast steel joints for bridge,gear,integrated chassis,steel bracket,rudder pintle, ... rudder blade, quill shaft,anvil stand,support roller,cast steel joints for bridge,gear,integrated chassis,steel bracket,rudder pintle, ...