| 详细介绍：
彩石金属瓦作为一建筑材料，它首先须具有一定的刚度和弯曲强度以保证在受到外力的情况下，变形较小。但是也会出现彩石金属瓦脆了的现象，那么彩石金属瓦发脆的原因是什么呢？又有什么影响呢？在这里，我们了解一下彩石金属瓦的质量检测以及发脆的原因：
Tell me, Senora Dona Rodriguez,” said Don Quixote, “do you perchance come to transact any go-between business? Because I must tell you I am not available for anybody’s purpose, thanks to the peerless beauty of my lady Dulcinea del Toboso. In short, Senora Dona Rodriguez, if you will leave out and put aside all love messages, you may go and light your candle and come back, and we will discuss all the commands you have for me and whatever you wish, saving only, as I said, all seductive communications.”
“I carry nobody’s messages, senor,” said the duenna; “little you know me. Nay, I’m not far enough advanced in years to take to any such childish tricks. God be praised I have a soul in my body still, and all my teeth and grinders in my mouth, except one or two that the colds, so common in this Aragon country, have robbed me of. But wait a little, while I go and light my candle, and I will return immediately and lay my
彩石金属瓦质量检测标准：
1、彩石金属瓦长期使用无变色发黄现象。
2、彩石金属瓦外观光洁，无明显气泡或裂纹。
3、光线透过呈散射状，光照柔和。
4、彩石金属瓦韧性好，屋面安装打钉时无开裂现象。
彩石金属瓦发脆的原因：
1、彩石金属瓦作为一种钢结构辅件，是严禁踩踏的，彩石金属瓦在屋面上搬运、吊装过程中按正确的操作方法和彩石金属瓦正常的弯折变形，都不会对彩石金属瓦造成损伤，对此，金属瓦都提供了相应说明。
2、好的彩石金属瓦除了选用高品质的抗UV膜和优质树脂外，其生产固化度也是重要的一条。经检测，高质量的彩石金属瓦固化度均在95%以上；内部分子结构呈近似均匀的网状结构，该结构非常稳定，外界的紫外线、水汽、酸碱物质等很难对其造成大的影响。因为彩石金属瓦固化度提高以后，伴随的其硬度，机械强度（拉伸强度、弯曲强度等）也会很高，同时表现的相对较脆。
3、彩石金属瓦作为一建筑材料，它首先须具有一定的刚度和弯曲强度以保证在受到外力的情况下，变形较小。这样的话可以避免因受到外力而使密封胶和防水处理失败，有效地防止漏水。
4、国内的很多彩石金属瓦为了增加彩石金属瓦的韧性，在彩石金属瓦中加了一种增塑剂（也即柔软剂）的物质。
在欧洲等西方国家，传统的粘土、水泥制的瓦片已近淘汰。在南非，92％的斜面屋顶采用彩色彩石金属瓦，在市场上占绝对主流。国内的北京、上海、浙江、大连、南京、天津、苏州等地已开始广泛使用并迅速普及。彩石金属瓦的优势已经显现无疑。
金属瓦规格：每片瓦尺寸规格为1300mm（长）×420mm（宽），每片重约3公斤，采用0.42 mm厚120克镀铝锌钢板为基层。sorrows before you as before one who relieves those of all the world;” and without staying for an answer she quitted the room and left Don Quixote tranquilly meditating while he waited for her. A thousand thoughts at once suggested themselves to him on the subject of this new adventure, and it struck him as being ill done and worse advised in him to expose himself to the danger of breaking his plighted faith to his lady; and said he to himself, “Who knows but that the devil, being wily and cunning, may be trying now to entrap me with a duenna, having failed with empresses, queens, duchesses, marchionesses, and countesses? Many a time have I heard it said by many a man of sense that he will sooner offer you a flat-nosed wench than a roman-nosed one; and who knows but this privacy, this opportunity, this silence, may awaken my sleeping desires, and lead me in these my latter years to fall where I have never tripped? In cases of this sort it is better to flee than to await the battle. But I must be out of my senses to think and utter such nonsense; for it is impossible that a long, white-hooded spectacled duenna could stir up or excite a wanton thought in the most graceless bosom in the world. Is there a duenna on earth that has fair
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