High quality steel keel, ceiling channel/profile from professional manufacturer--Wen'an City Xinxing Building Materials Co., Ltd High quality steel keel, ceiling channel/profile from professional manufacturer-- Wen'an City Xinxing Building Materials Co., Ltd.UD28: 28x27mmUC60: 60x27mmMaterial: galvanized steel stripThickness: 0.4-0.6mm, or according to order.Length: 2.8m,3.0m or according to ...