Cangzhou Metalign Machinery Co., Ltd. Quality Control

Raw Material Inspection

· Material testing for steel plates, gears, and bearings

· Surface hardness and tensile strength inspection

· Supplier certification (e.g., high-quality steel from Baosteel or Ansteel)

Processing Accuracy Control

· Cast iron frame precision inspection

· CNC machining for gearboxes and rollers

· Roller quenching and hardness testing

· Flatness and dimensional tolerance inspection for laser-cut components

Assembly Process Control

· Concentricity check for bearings and gearboxes

· Matching test for motors and hydraulic systems

· Rail alignment check

· Calibration of each forming stand

Electrical System Inspection

· PLC system stability test

· Inverter and servo motor testing

· Hydraulic system pressure adjustment

· Safety protection device inspection

Roll Forming Trial Run

· Testing with steel coils of different thicknesses

· Dimensional tolerance inspection (within ±0.3mm)

· Surface flatness and scratch-free check

· Punching hole accuracy test

Finished Product Quality Control

· Profile hardness testing

· Twist and straightness inspection

· Coating thickness measurement for galvanized surfaces

Packing & Shipment QC

· Anti-rust treatment

· Waterproof and shockproof packaging

· Machine nameplate and parameter label verification

· Packing list check