Jinwang Precision machines plastics, copper, aluminum, stainless steel and alloy steel for custom components. Start with the grade required by your design, then define material condition, machining features and final inspection requirements.
Plastics
For CNC machined plastic parts, specify the polymer grade, any filler or reinforcement, and the operating conditions that matter to your design. Identify mating features and dimensions that control fit. Material suitability and machining requirements are reviewed for the individual component.
For copper components, provide the exact grade and condition rather than only a general material name. Identify functional contact surfaces, burr requirements and any specified surface treatment. Include conductivity requirements or material documentation if your drawing calls for them.
For aluminum machined parts, specify the alloy and temper, assembly fits and surface finish. If anodizing or another coating is required, identify the surfaces and whether dimensions apply before or after treatment. Our component examples include aluminum coupling hubs.
For stainless steel components, state the grade, supplied condition and relevant service environment. Identify sealing or mating surfaces and specify any surface treatment required by the design. Include inspection and material-document requirements with the drawing.
For alloy steel parts, define the grade, heat-treatment condition and required hardness. Mark bearing seats, journals or other surfaces requiring a specified finish. Include grinding requirements and the inspection records needed to accept the finished component.