Talking about ductile iron pipe

The product adopts an advanced casting pipe production process, namely hot-die centrifugal casting of ductile iron pipe. It can be divided into two types: pressure pipe and non-pressure pipe, which are mainly used for water transportation, oil transportation and gas transmission. It has the characteristics of corrosion resistance and long service life (up to 100 years). Its thin wall strength is high, it can save a lot of founding pig iron; high conveying pressure, guarantee safe water supply (gas, oil); simple construction, low construction cost; production cost Low, low energy consumption, high economic efficiency; high technical content of products, with the performance of steel pipes, is the main pipe used for pipeline installation in China's urban construction. The equipment used in the production process is a hydraulic pipe drawing water jet hot mold centrifugal ball cast pipe casting machine, or a water-cooled metal type centrifugal pipe casting machine, using circulating water, no pollution to the water source, and no waste water or waste gas; The use of medium frequency electric furnace saves energy, calms water quality, and has no pollution to the atmosphere and surrounding environment. The product is resistant to bending, vibration and pressure.

Centrifugal ductile iron pipe: This product adopts an advanced casting pipe production process, namely hot-die centrifugal casting of ductile iron pipe. It can be divided into two types: pressure pipe and non-pressure pipe, mainly used for water transportation and oil transportation. And gas. It has the characteristics of corrosion resistance and long service life (up to 100 years). Its thin wall strength is high, it can save a lot of founding pig iron; high conveying pressure, guarantee safe water supply (gas, oil); simple construction, low construction cost; production cost Low, low energy consumption, high economic efficiency; high technical content of products, with the performance of steel pipes, is the main pipe used for pipeline installation in China's urban construction. The equipment used in the production process is a hydraulic pipe drawing water jet hot mold centrifugal ball cast pipe casting machine, or a water-cooled metal type centrifugal pipe casting machine, using circulating water, no pollution to the water source, and no waste water or waste gas; The use of medium frequency electric furnace saves energy, calms water quality, and has no pollution to the atmosphere and surrounding environment. The product is resistant to bending, vibration and pressure.

Auxiliary Agent For Concrete Retarder

Classification by structure:

(1) Sugar: sugar calcium, gluconate, etc

(2) Citric acid, tartaric acid and their salts

(3) Zinc salt and phosphate

(4) lignosulfonate

Hardening effect

(1) Influence on strength, excessive incorporation will cause the concrete to remain unsolidified for 24 hours or even 72 hours, thus affecting the need for early strength of concrete and delaying the construction progress. No obvious effect was found on the concrete of suitable age.

(2) The effect on contraction, the appropriate use of the contraction has no significant effect. Excessive use will cause the top concrete to dry and shrink due to excessive water evaporation and shrinkage cracks.

(3) The effect on frost resistance durability is similar to that of concrete without adding retarder. [1]

Detection index

Increased turnover: 8

Initial setting time difference: +60~+120

Compressive strength ratio 7 days: 120

Compressive strength ratio 28 days: 120

Softening coefficient: 0.55

Auxiliary Agent For Concrete Retarder,retarding agent,set Retarder

Shanghai Hongyun New Construction Materials Co., Ltd , https://www.hongyunpce.com