... -curving YX25-840-11050 roofings to (convex)ARC-shape, L-shaped, U-shaped, and C-shaped; YX25-840-1050 Automatic Hydraulic Strike -Curving Machine ... -curving YX25-840-11050 roofings to (convex)ARC-shape, L-shaped, U-shaped, and C-shaped;◊ Feature: This machine is used for crimping curving ...