Mipope ya Cold Rolled Steel ili ndi gawo la dzenje lalikulu ndi gawo lozungulira (gawo lozungulira).Zinthuzo ndi ozizira adagulung'undisa mpweya zitsulo lamba ndi khoma makulidwe 0.6mm kuti 2.0mm.Chingwe chachitsulo chozizira chikatenthedwa ndi kutentha kwa annealing, mtundu wa pamwamba umasanduka wakuda chifukwa cha kutentha kwambiri kukhudzana ndi mpweya, womwe umatchedwa black stripping.The thupi katundu kukhala ofewa, amene ndi yabwino kuwotcherera zina kupanga zitsulo mapaipi.Kuuma kofala ndi 57HRB, ndipo kumatha kuchepetsedwa kukhala kuuma kosiyana ngati pakufunika.
Chitsulo chitoliro zakuthupi si aloyi otsika mpweya zitsulo.Njira yaukadaulo yopanga zitoliro ndi ERW yowotcherera ndi msoko wautali.Miyezo yazogulitsa imatha kutsata ASTM A500, ASTM A53, ASTM A795, BS1387, BS EN10255, EN 10219, BS 1139, BS 39.