The special characteristics: 1.New Generation of grooved & rugged galvanized steel keel 2. We have passed the national authority prove,Our light steel keel compared the same material , the strength improved 28.5% 3.Ju Gang Steel Keel is patented product.The patented No. is ZL2007 3 30077666.8 & ZL2007 3 0077667.2 4.The surface content of galvanized zinc is over 100g/m2. 5.If order special size no need to pay the extral fees. Name Spec. Thickness Remark Furring Channel 50X19MM 0.4 , 0.45 , 0.5mm New Generation grooved & Ruggled products which Zinc Coating over 100g/sqm Main Channel 38X12MM 0.8 , 1.0 , 1.2mm 20X12MM 0.6 , 0.8 mm 50X15MM 1.0 , 1.1 , 1.2mm Wall angle 20X20 0.4 , 0.6 mm Studs 50X50 0.6 , 0.7 , 0.8 mm 75X45MM 0.6 , 0.7 , 0.8 , 1.0 , 1.5mm 100X45MM 0.6 , 0.7 , 0.8 , 1.0 , 1.5mm 150X45MM 0.8 , 1.0 , 1.5mm Tracks 50X38 0.6 , 0.7 , 0.8 mm 75X35MM 0.6 , 0.7 , 0.8 , 1.0 mm 100X35MM 0.6 , 0.7 , 0.8 , 1.0 mm 150X40MM 0.8 , 1.0 , 1.5mm