product name: 92/188 SPC Screws 7 sections 3 heads

classification: WPC/SPC Floor Only Barrel Screws

Screw Cyinder Maternal: 38CiMolA
Cylinder Alloy Length:400mm
Screw Alloy Length:450mm
Screw Cylinder Alloy Depth:0.8-2.0mm
Hardness atter Adjustment HB260-290
Nitridation Depth:0.50-0.70
Surface Harcdness ater Adjustment HV940-1050
Screw Straightness:0.015
Cylinder Straightness:0.05mm
Cylinder Concentricity: Above 9o%
Cylinder Centrad:0.05mm
Maka pyc cnustFoamng Pane, evc Wood and PastcfFoamng Pana.
Make 2.5m wide Panel, Make over 2cm Thick Panel