发布时间:2025-02-02 05:03:13
1、180°弯头按表2倍计算,45°按1/2计算;
2、R1.0DN弯头重量按表2/3计算;
3、90°弯头计算公式:
0.0387*S(D-S)R/1000
式中S=壁厚mm、D=外径mm、R=弯曲半径mm
90°弯头R=1.5D,及弯头的中心高度A=R=1.5*25.4*NPS。
衬塑弯头、UPVC弯头 不知道
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2025-02-02 05:03:13 2025-02-02 05:03:13 2025-02-02 05:03:13 2025-02-02 05:03:13 2025-02-02 05:03:13 2025-02-02 05:03:13 2025-02-02 05:03:13 2025-02-02 05:03:13 2025-02-02 05:03:13 2025-02-02 05:03:13 2025-02-02 05:03:13我有一套新房没装修想出租一二年后再卖出去到时是按新房还是旧房出售呢
2025-02-02 05:03:13 2025-02-02 05:03:13 2025-02-02 05:03:13 2025-02-02 05:03:13 2025-02-02 05:03:13 2025-02-02 05:03:13 2025-02-02 05:03:13 2025-02-02 05:03:13 2025-02-02 05:03:13 2025-02-02 05:03:13 2025-02-02 05:03:13齿轮挂钟体验精密机械之美是怎样的精密机械让钟表分毫不差的记录时间的刻度呢
2025-02-02 05:03:13 2025-02-02 05:03:13 2025-02-02 05:03:13 2025-02-02 05:03:13 2025-02-02 05:03:13 2025-02-02 05:03:13 2025-02-02 05:03:13