Quality Control System
From Material to Delivery — Quality at Every Step
Surface Finish Callouts for CNC Turned Parts
Specify Ra or equivalent surface finish only where function requires it, and note sealing, bearing or cosmetic zones so machining and inspection stay aligned.
What a CMM Inspection Report Should Include for Precision Parts
A useful CMM report ties measured features to drawing callouts, revision, method notes and pass/fail results so buyers can release parts with confidence.
Critical Dimensions vs Reference Dimensions in Precision RFQs
Mark critical dimensions clearly and keep reference dimensions informational so suppliers focus inspection and process control where the design actually requires it.
How to Specify Spur Gears for a Manufacturing RFQ
List the spur-gear data manufacturers need—module or DP, tooth count, face width, material, quality class and inspection notes—so quoting stays accurate.
Aluminum vs Stainless Steel for Precision Turned Parts
Compare aluminum and stainless steel for precision turned parts by machinability, corrosion needs, strength targets and what to send in an RFQ.
What Does a Guide Bushing Do in Swiss CNC Turning?
A guide bushing supports bar stock close to the cutting zone in Swiss-type CNC turning, helping control deflection on slender or multi-feature small-diameter parts.
What Is Swiss CNC Machining and When Should You Use It?
Learn when Swiss-type CNC turning is the right route for slender, miniature and multi-feature precision parts — and what to include in your RFQ.
Swiss CNC Machining vs. Conventional CNC Turning
Compare Swiss-type and conventional CNC turning so buyers can choose the right process route before sending drawings for quotation.
Send drawings, material, quantity and inspection requirements. Zhuocheng will review manufacturability and recommend a process route.