4 × 100% Guarantees
Every Liberfitting component shipped to you is backed by four absolute performance guarantees -- no exceptions, no fine print. These are not aspirations; they are engineering standards built into our production process.
NO
LEAK
Thread geometry, sealing surfaces, and torque specifications are precision-machined to ISO tolerances. Every batch undergoes pressure-cycle testing before dispatch.
NO
CRACK
One-piece, weld-free blanks sourced exclusively from electric furnace steel. No welded seams means zero micro-crack initiation sites -- the root cause of most fitting failures.
NO
BLOW-OFF
Ferrule crimp dimensions and coupling retention geometry are validated to withstand rated working pressure plus safety margins. Hose-to-fitting retention is tested under dynamic pressure cycling.
NO
BURST
Wall thickness calculations, material grade selection (GB20#/35#/45# carbon steel; SS304/SS316), and heat treatment are engineered to meet and exceed rated burst pressure specifications.
4-Layer Quality Control
Our quality system is not a single checkpoint -- it is a continuous, multi-stage verification loop embedded at every point in production, from raw material intake to final dispatch.
Self-Inspection
Each operator verifies their own output against dimensional specs and visual standards at the machine. First line of defense -- immediate feedback loop.
Patrol Inspection
Workshop supervisors conduct roving checks throughout each shift. Cross-station audits catch drift before it propagates across a batch.
Finished Goods Sampling
Statistical sampling of completed batches per AQL standards. Full dimensional, surface, and pressure verification before parts enter finished goods inventory.
Camera Inspection
Automated machine vision systems scan 100% of parts for dimensional accuracy, surface defects, and thread profile -- eliminating human error at final gate.
Automated Vision Systems
Our production floor integrates automated camera inspection systems that eliminate human error from the final quality gate. Every part is scanned -- not sampled.
High-Speed Vision Camera Array
Multi-axis camera arrays capture full-circumference scans of each fitting at line speed. Thread profiles, OD/ID tolerances, and surface finish are verified against digital master references in real time. Non-conforming parts are automatically rejected before packing.
Coordinate Measurement
CMM probing verifies critical dimensions to ±0.001mm -- ensuring thread pitch, seating angles, and port geometry meet specification.
Salt Spray Chamber
Batch samples undergo accelerated corrosion testing: CR3+ zinc plating verified at 96+ hours; zinc-nickel coating validated to 700+ hours.
Pressure Test Bench
Hydrostatic pressure testing validates burst resistance and zero-leak performance under static and cyclic load conditions before batch release.
After-Sales Response
Problems happen. What matters is how fast and completely we resolve them. Our after-sales team is structured to respond with urgency -- because your production schedule cannot wait.
Acknowledgment
All claims and complaints acknowledged within 24 hours of receipt. You will receive a case number and assigned contact.
Resolution
Root cause analysis completed and resolution (replacement, refund, or corrective action) delivered within 5 business days.
Claim Acknowledgment
Every complaint receives a formal acknowledgment with assigned case number within 24 hours.
Root Cause Analysis
Preliminary investigation and root cause identification completed within 72 hours using batch traceability records.
Full Resolution
Replacement shipment, refund, or corrective action plan finalized and executed within 5 business days.
Encountered a defect or performance issue? Submit a formal quality complaint. Please include your order number, batch/lot number, and photos of the defective parts to expedite resolution.
Need technical guidance, material compatibility advice, replacement parts, or warranty documentation? Our after-sales engineers are available to support you throughout the product lifecycle.