Changsha Xiangjia Metal Materical Co., Ltd.

Hot-dipped galvanized pipes are steel pipes that undergo a protective coating process through either hot dipping or electro-galvanizing. This method involves submerging cleaned steel components into a molten zinc bath at approximately 500°C. As a result, the steel surface becomes coated with a zinc layer that effectively prevents corrosion. This not only extends the lifespan of the metal but also provides a smooth, reflective finish that resists scratches and blemishes. Hot Dipping Process The process of hot dipping includes several critical steps that ensure the quality and efficiency of the galvanized pipe. Here's a breakdown of the hot galvanizing procedure: 1. Pickling: The finished components undergo acid cleaning to remove any rust, scale, and impurities. 2. Washing: A thorough water wash is implemented to eliminate remaining acids. 3. Preparation: A zinc alloy solution is introduced to help the zinc adhere better to the steel. 4. Drying: The components are dried to ensure n...

DN, or "Nominal Diameter," refers to the nominal size of a pipe's internal diameter, represented in millimeters. This measurement is crucial for ensuring that pipes and fittings are compatible when connected, making it essential for both installation and operational efficiency. Common DN Sizes in Steel Tubes Steel tubes come in various DN sizes, each specifically designed for different purposes. Typically, the DN sizes range from DN15 to DN1200, with each size corresponding to a specific internal diameter. Below is a list of some of the most common DN sizes along with their respective nominal diameters in millimeters: - **DN15:** 21.3 mm - **DN20:** 26.7 mm - **DN25:** 33.4 mm - **DN32:** 42.2 mm - **DN40:** 48.3 mm - **DN50:** 60.3 mm - **DN65:** 73 mm - **DN80:** 88.9 mm - **DN100:** 114.3 mm DN, or nominal diameter, is a fundamental concept in the realm of steel tubes that signifies the nominal internal diameter of a pipe. With various DN sizes available, it is essenti...