... :Q215,Q235,A36,SS400,SS540Commoditystructural steel C/Z type channel steelShapeC/Z ChannelModel Numberh:80mm-400mm,w:40mm-80mmPerforated Or ... Application:purlin and wall beam of steel structure buildingC/Z type channel steel purlins advantage:(1). Design according to ... strength and stiffness, high weight bearing Our company is a collection design production sales, installation after-sales service as ...