1, steaming method first to build steaming pool, the general steaming pool needs 2.5 meters wide. 4 meters long. 3 meters deep, can also be based on their own production and size of the die size, but also need to steam boiler The pool is transported with steam. The sealing degree of the steaming and cultivating pool is better. The retort pool can be used after it is completed. After the cement pipe is completed, it can be lifted into the steaming and brewing tank and steamed. Generally, it takes 2.5--3.5 hours for steaming. After the cement tube solidifies, generally the higher the temperature, the shorter the steaming time. The steaming time is inversely proportional to the steam temperature, and the higher the temperature, the better.
2. Natural conservation Natural conservation means no need for a steaming pool. After cement pipes are finished, the concrete pipes and molds are put on open air for natural conservation. After the cement pipes are finished, it takes one day for open-air conservation. The next day can be opened. After the mold is opened, it takes 4 to 6 days for natural conservation. Every day, someone also sprays the water on the cement pipe three times. The time is usually once in the morning, once in the morning and once in the afternoon. The purpose of the water spray is to keep the humidity of the cement pipe. The concrete can slowly solidify itself, and the number of water sprays can also increase and decrease the number of water sprays according to the weather conditions and the humidity of the weather, but the natural curing requires more molds.
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