Assembly & 100% testing
Assembled on calibrated, traceable lines; every unit pressure- and leak-tested before it ships.

Service overview
Assembly & 100% testing
The final step is where Haofeng's in-house control pays off. Components made across our own forging, machining and welding lines come together on calibrated, traceable assembly lines — with torque, sealing and function verified as each unit is built.
Every pressure-bearing product is then pressure- and leak-tested to its rated working pressure — 100%, not by sample — and representative units from each batch undergo functional checks. Nothing ships on assumption; it ships on a test result.
Finished products are inspected, labelled, documented and packed — ready for OEM / private-label branding and export. Material traceability and complete inspection records travel with the goods, so buyers can pass their own audits and certifications with confidence.
Capabilities & Features
Product assembly
Category
Details
Assembly
Calibrated, traceable assembly lines ·
Verified torque & sealing ·
Functional assembly checks ·
Component integration from in-house parts ·
Scalable from prototype to volume
Testing & QC
100% pressure & leak testing ·
Tested to rated working pressure ·
Per-batch functional sampling ·
Defects caught before dispatch ·
Complete inspection records
OEM, packing & documentation
OEM / private-label branding ·
Custom protective packaging ·
Material traceability (MTC) with goods ·
Export documentation support ·
Ready for buyer audits & certification
FAQ

Simple & Transparent
Our proven workflow
Step 1
Design and planning
Step 2
Precision machining
Step 3
Final Inspection & dispatch
Common questions
Frequently asked questions
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