The following are manufacturers producing galvanized strip trapezoidal grooved pipes and bread grooved pipes: Jiatong is located in Tianjin and is a company that produces and sells various non-standard pipes. The company owns a variety of molds and produces trapezoidal pipes, bread pipes, and other types of metal non-standard pipes, which can be customized according to customer requirements for special specifications, wall thickness, materials, and fixed-length processing. The products are widely used in industries such as construction and mechanical manufacturing. 2. The company produces and processes various cold extrusion and cold drawing non-standard steel pipes, including trapezoidal pipes, bread pipes, grooved pipes, and various polygonal non-standard cross-section pipes in various specifications. They can also process and customize various types of non-standard steel pipes according to customer drawings. *: Customizable and saleable non-standard pipes include elliptical pipes, flat elliptical pipes, D-shaped pipes, semi-circular pipes, hexagonal pipes, mushroom pipes, bread pipes, ingot pipes, T-shaped pipes, and trapezoidal pipes, etc., all metal non-standard pipes with complete specifications and reliable quality, capable of meeting social production needs in multiple aspects. When choosing a manufacturer, it is recommended to consider factors such as the manufacturer's reputation, product quality, production capacity, price, and after-sales service. If possible, request samples from the manufacturer or visit the production site to better understand their production and processing capabilities.