Knowledge

17Nov, 2024

What are the application areas of steel-plastic composite pipes?
Urban water supply and drainage systems: They can meet the requirements of urban water supply and drainage systems, transporting different media such as clean water, sewage, and ra
17Nov, 2024

What are the production processes for steel-plastic composite pipes?
Hot Dip Coating Process: This involves using a fluidized bed dipping method for plastic coating, with a one-time film formation technique. It is also known as corrosion prevention
17Nov, 2024

What are the characteristics of steel-plastic composite pipes?
Strong corrosion resistance: The inner plastic layer possesses excellent corrosion resistance, capable of resisting the erosion of various chemical media such as acids, alkalis, an
15Nov, 2024

What is a Steel-Plastic Composite Pipe?
A steel-plastic composite pipe is a pipe made by combining an inner layer of plastic pipe with an outer layer of steel pipe through a specific manufacturing process. This structure
15Nov, 2024

Treatment of Zinc Ash
The treatment methods for zinc ash can be divided into wet and pyrometallurgical (also known as distillation) methods. The pyrometallurgical method leverages the significantly lowe
15Nov, 2024

Treatment of Zinc Slag
The treatment of zinc slag can be categorized into two main methods: wet process and pyrometallurgical process. The core of the pyrometallurgical process is distillation. Depending
15Nov, 2024

Treatment of Exhaust Gas
Treatment of Acid-Containing Exhaust Gas There are two methods for treating acid-containing exhaust gas. Firstly, during the construction of workshops, a ventilation structure for
15Nov, 2024

Treatment of Waste Passivation Solution and Waste Phosphating Solution
Recovery of Chromic Acid Solution: Passivation solutions containing hexavalent chromium are not allowed to be discharged. Currently, cationic exchange resins are commonly used to f
14Nov, 2024

Treatment of Waste Alkali Liquor and Flux Waste Liquor
The waste alkali liquor generated during hot-dip galvanizing typically contains oil contamination, dirt, and scum. The general treatment method involves pumping out the waste alkal
14Nov, 2024

Treatment of Waste Acid Bath
The waste liquids discharged during the acid pickling process include sulfuric acid waste and hydrochloric acid waste. Large and medium-sized enterprises generate over 250 tons of
14Nov, 2024

Treatment of Three Wastes in Hot-Dip Galvanizing Process
The "three wastes" in hot-dip galvanizing refer to waste acid, waste gas, and waste solids.
14Nov, 2024

Why do some bright galvanized surfaces develop black spots after passivation?
The occurrence of black spots on the passivated, bright galvanized surface of hot-dip galvanized steel pipes is primarily due to impurities such as copper, iron, and arsenic presen

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