NOTES  :
(1)The value of tmin is whichever of the following is applicable: tmin 的值是下列中可适用的值之一:
(a)the minimum ordered wall thickness of the pipe, to include pipe that is purchased to a nominal wall thickness with an undertolerance other than12.5% .管道的最小订购壁厚，包括购买到的低于公称壁厚的管道，但公差不超过标称壁厚12.5%
(b)0.875 times the nominal wall thickness of pipe ordered to a pipe schedule wall thickness that has an undetolerance of 12.5% 0.875 乘以管道公称壁厚，该管道公称壁厚的公差为 12.5%
(2)The maximum thickness at the end of the component is as follows:管件端部最大厚度为:
(a)the greater of [tmin + 4 mm (0.16 in.)] or 1.15tmin when ordered on a minimum wall basis 在最小壁厚的基础上订购的[tmin + 4 mm(0.16 英寸)]或 1.15tmin 中较大的壁厚
(b)the greater of [tmin + 4 mm (0.16 in.)] or 1.10tnom when ordered on a nominal wall basis 在公称壁厚的基础上订购的[tmin + 4 毫米(0.16 英寸)]或 1.10tnom 中较大的壁厚
(3)Weld bevel shown is for illustration only. 焊接坡口仅供参考。
(4)The weld reinforcement permitted by applicable code may lie outside the maximum envelope 适用规范允许的焊接补强可能位于最大外包络线之外。
(5)Wheretransitions using maximum slope do not intersectthe inside or outside surfaceswithin thetransition region, as shown by the phantom outline, maximum slopes shall be used. Alternatively, radii lying within the envelope may be used. 在所用最大斜度的过渡段不与内表面或外表面相交时，如虚线轮廓所示，应采用图示的最大斜度或换用圆角。