Contact Quality Team
Global Flow Control Specialists

Technical Authority in Global Procurement

LOONWAN INDUSTRIAL is your Hong Kong hub for high-spec industrial valves and actuators. We ensure zero-defect quality through direct factory audits, NDT verification, and hydrostatic pressure testing, bridging manufacturing sources with stringent international standards.

API 6D

Certified

Zero-Leakage

Seat Testing

Mill Test

Test Reports

On-Site Verification

Rigorous Factory Floor Inspection

Our in-house inspection engineers conduct non-destructive testing (NDT) for flaw detection, precise dimensional audits, and actuator torque performance verification. Every component undergoes hydrostatic pressure testing beyond operating parameters, ensuring reliability prior to port dispatch.

Our Quality Protocol

Four Stages of Verified Excellence

01
02
03
04

Raw Material Audit

In-Process NDT

Hydrostatic Testing

Pre-Dispatch Inspection

Verification of material mill test reports and chemical composition analysis for all raw castings and forgings.

Ultrasonic flaw detection and magnetic particle inspection during manufacturing stages to identify defects early.

Pressure testing of valve shells and seats beyond specified operating conditions for zero-leakage assurance.

Final dimensional checks, actuator torque rating verification, and packing integrity audit before export.