The product description： U channel  Steel Grade:Q235,Q345,SS400,ASTM A36,S235JR,S275JR Standard:GB/T11263--1998,JIS G3101,ASTM GR.B EN10025 Sizes:50*37*4.5---400*104*14.5mm Theory weight :5.433kg/m--71.488kg/m Country of origin:China(Mainland) product name: U channel  Provinces :Tianjin Application :Structure Pipe The production process: ERW Certificate:CE Whether the alloy:Non- alloy Factory :yes Port :Tianjin Packing :1.Packed in bundle,suitable for sea transport(by container) What benefits do customers get： 1.we are factory .( our price will have an advantage over trading companies.) 2.Don't worry about the delivery date . we are sure to deliver the goods in time and quality to achieve customer satisfaction . Product detail : Different from other factories：     1.we applied for received 3 patents .(Groove pipe ,Shoulder pipe,Victaulic pipe )       2. Port : our factory just 40 kilometers from Xingang port ,is biggest port in the north of China .       3.Our manufacturing equipment include 4 pre-galvanized products lines,8 ERW steel pipe product lines,3 hot-dipped galvanized process lines.   Customer case：     Australian customer purchase powder coating pre galvanized steel square tube. After customers receives the goods for the first time . Customer tests adhesive strength between the powder and the surface of the square tube .Customers test powder and square surface adhesion is small . We have meetings with customers to discuss this problem and we do tests all the time . we polished the surface of the square tube . Send the polished square tube to the heating furnace for heating . We tests all the time and discuss with customer all the time . We keep finding ways . After many tests, the final customer is very satisfied with the products. Now customer purchase a large number of products from factory every month . Customer photos :   The customer purchased steel pipes in our factory. After the goods were produced, the customer came to our factory for inspection. Main products :   Contact us: Tianjin Min Jie Steel Co.,Ltd Factory Address: No.B6-4 building, Oriental commercial street, Jinghai County, Tianjin. China Contact person: linda Wechat/whatsapp: +86 15028159378, skype:m15075132650 Tel: +86-022-68962601  Fax:+86-022-68962601    Mob: +86-15028159378 Web:www.minjiesteel.com