70*190 Hot-Dip Galvanized Grooved Tube Manufacturer, Rectangular Grooved Tube Dimensions and ModelsHere are some manufacturers of 70*190 hot-dip galvanized grooved pipes and common sizes of rectangular groove pipes: - **Tianjin Jiatong**: Located in Jinghai District, Tianjin, it is an enterprise producing various types of pipes, offering hot-dip galvanized grooved pipes and other products. The quality of the products is guaranteed, and they provide custom samples and deep processing services, with delivery to the factory available. Contact: Manager Huang, 156-2079-0300. - **Tianjin Jiatong is a processing enterprise producing square pipes, grooved pipes, and other products. These products are used in various industries such as construction, furniture, and guardrails.

2. **Rectangular Channel Tube Sizes and Models**: - **Small Sizes**: Such as 20×30, 25×40, 30×50, etc., these sizes of rectangular channel tubes are commonly used in small-scale architectural decorations, furniture manufacturing, or small structural components. - **Medium Sizes**: Commonly found in sizes like 40×60, 50×70, 60×80, etc., these are widely used in construction structures and mechanical manufacturing, such as part of a framework or as support components for mechanical parts. - **Large Sizes**: Large rectangular channel tubes like 70×190, 80×100, 100×150, etc., are typically used in large-scale construction projects, bridge construction, and large-scale mechanical manufacturing where high material size and strength requirements are necessary. Specific size and model requirements should be determined based on the actual application and design needs. When selecting a manufacturer, it is recommended to consider factors such as production capacity, product quality, price, and delivery time.