Aluminum fin tubes, Low fin tubes, Spiral Slot tubes, High Frequency ERW fin tubes, ERW studded tubes, ERW H/HH fin tubes. Production equipment1. ... microscope projector6.One computer controlled pull-off tester MaterialSeamless Tube:SA179, SA106-B, SA210-A1,SA210-C, ... TP304, TP304H, TP316L, TP321, TP347HDIN17175 ST35.8 P235GHWelded Tube:SA214, SA178BS3059 Part-1 320ERW Aluminum fin tubesLow fin ...