Quality built into every production stage.
Yuanzhou controls material identification, machining, surface condition, dimensions, assembly, inspection, and protective packing for sanitary valves and stainless steel fittings. Requirements are confirmed against the final quotation, drawing, and order specification.
A practical quality process from incoming material to shipment
Quality is not treated as a final visual check. Inspection points are integrated through production so specification issues can be identified before products reach packing.
Order verification
Product type, size, connection, material, finish, seal, quantity, and documentation requirements are reviewed.
Production control
Machining, forming, polishing, and assembly follow the confirmed drawing or product specification.
Inspection
Dimensions, surface condition, wall thickness, ovality, and functional requirements are checked where applicable.
Protection & release
Products are cleaned, protected, identified, packed, and reviewed against order requirements before shipment.
What our team checks
The applicable inspection scope depends on the product and purchase specification. Send any special acceptance criteria before quotation.
- Material grade and product identification
- Connection dimensions and overall geometry
- Wall thickness and tube or fitting ovality where applicable
- Internal and external surface condition
- Specified surface roughness where required
- Seal, assembly, leakage, or functional checks where applicable
- Cleanliness, protection, labeling, and packing
Confirm the standard for the exact product configuration
Yuanzhou supplies products for projects using standards and connection systems such as 3-A dimensional requirements, DIN, SMS, ISO, ASME BPE, RJT, IDF, and BS. The applicable dimensional standard, material, finish, approval status, and documentation must be confirmed for each product and order.
Send the product specification and required evidence.
Include product type, size, material, connection, seal, finish, quantity, required standard, destination country, and any inspection or documentation requirements.