QULITY CONTROL ABOUT EXTRUDED FIN TUBES
FIN TUBE TYPE: EXTRUDED FIN TUBES
Core tube: SB338 Gr.2 OD25.4mmXMWT1.47mmX7315mmL
FIN MATERIAL : AL1060-F
at 10% random rate, the inspection contents are overall length, finned length, bare end length, middle bare tube length, fin tube out diameter, fin height, fin thickness, fin pitch, all measured values for dimension should be according to the drawing.
Details of dimension check shown as follows:
FIN TUBE DIMENSIONS INSPECTION | ||||
SAMPLING RATE | 100% | |||
INSPECTION ITEMS | SPECIFICATIONS | TOLERANCES | RESULTS | ACCEPTABLE |
OVERALL LENGTH | 7315 mm | 0 mm~+5 mm | All within tolerance | Yes |
FINNED LENGTH | ~7227mm | N/A | All within tolerance | Yes |
BARE END A | 44 mm | +/-2 mm | All within tolerance | Yes |
BARE END B | 44mm | +/-2 mm | All within tolerance | Yes |
FIN TUBE OD | 57.15 mm | +/-0.5 mm | All within tolerance | Yes |
FIN THICKNESS | ~0.4 mm | N/A | All within tolerance | Yes |
FIN PITCH | 2.54 | +/- 0.1 mm | All within tolerance | Yes |
END PREPARATION | Plain end | N/A | Plain end | Yes |
