This article introduces 6 years' long evolution of the National Standard of GB/T 20474-2006 《Fiberglass reinforcement asphaltshingle》 and the efforts of participants.
The article introduces the process and the equipment of a first continuously roll -splitting asphaltshingle production line that is domestically designed and manufactured.
介绍了我国自行设计、制造的第一条连续辊切式油毡瓦生产线的工艺和设备。
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In development of standard for color sands of colored asphaltshingle, requirements for the color sands were proposed in the light of production experience and overseas relevant information.