1roller of cold-bending mold 2roller of cold-bending & welding of tube ROUND20-165 3forming roller:GCr15,Cr12,Cr12MoV,SKD11 roller of cold-bending mold*roller of cold-bending & welding of tube φ20-φ165*forming roller:GCr15,Cr12,Cr12MoV,SKD11*welding roller:3Cr2W8V,H13,SKD61*ISO9001*best price