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发表于 2015-10-29 12:18:02
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B16.11 2.1.1 规定 the
minimum wall thickness for pipe to be used with a Table 7 Class designated fitting shall be computed based on appropriate size straight seamless pipe of equivalent
material as the fitting (as shown by comparison of composition and mechanical properties in the respective material specifications). The minimum pipe wall thickness calculation shall include pressure design and all applicable additional allowances (e.g., erosion, corrosion,and thread depth for threaded pipe). The minimum wall thickness for selected pipe, considering manufacturing minus wall thickness tolerance (typically 12.5%), shall not be less than the minimum wall calculation。按照TABLE 7去查对应的壁厚等级和对应的无缝的管子的尺寸计算加上负偏差,腐蚀,和螺纹深度等因素。。。
在UG-44,B31.1 &B31,.3里规定B16.11的标准管件是按照无缝的管子计算加上各种考虑的余量。。无论VIII-1 还是B16.11 要求都是一致的。 以上个人理解! |
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