This article introduces 6 years' long evolution of the National Standard of GB/T 20474-2006 《Fiberglass reinforcement asphalt shingle》 and the efforts of participants.
详述了GB/T 20474—2006《玻纤胎沥青瓦》国家标准从申请到颁布实施历时六年，主编单位以及参编企业为标准的制定所付出的努力。
The article introduces the process and the equipment of a first continuously roll -splitting asphalt shingle 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。
In development of standard for color sands of colored asphalt shingle, requirements for the color sands were proposed in the light of production experience and overseas relevant information.
针对彩色沥青瓦彩砂标准的制定，参考国外资料并结合实际的生产经验，分析了彩砂在沥青瓦上应用应具备的质量要求。
But he points out that most roofs, whether tile or asphalt-shingle, have a life span of 20 to 25 years.
但他指出，无论是屋瓦还是基于沥青材料的盖屋板，多数的屋顶的生命周期都约为20- 25年。
But he points out that most roofs, whether tile or asphalt-shingle, have a life span of 20 to 25 years.
但他指出，无论是屋瓦还是基于沥青材料的盖屋板，多数的屋顶的生命周期都约为20- 25年。
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