a-بزرگتر از tmin+4mm یا 1.15mm زمانیکه بر اساس حداقل دیواره سفارش داده شده است.
b- بزرگتر از tmin+4mm یا 1.10 برابر ضخامت اسمی دیواره زمانیکه بر اساس دیواره اسمی سفارش داده شده است . ASME B36.10M و B36.19M را ببینید
حداقل ضخامت , tmin می بایست باید همانطور که در استاندارد یا مشخصات مربوط به قطعه مشخص شده باشد. شکل 2-1 را ببینید
تبصره های ۴ و۵ جدول :
(4) The value of tmin is whichever of the following is applicable:
(a) the minimum ordered wall thickness of the pipe to include pipe that is purchased to a nominal wall thickness with an undertolerance other than 12.5%
(b) 0.875 times the nominal wall thickness of pipe ordered to a pipe schedule wall thickness that has an undertolerance of 12.5%
(c) the minimum ordered wall thickness of the cylindrical welding end of a component or fitting (or the thinner of the two) when the joint is between two components
(5) The maximum thickness at the end of the components is
(a) the greater of tmin + 4 mm (0.16 in.) or 1.15tmin when ordered on a minimum wall basis
(b) the greater of tmin + 4 mm (0.16 in.) or 1.10 times the nominal wall thickness when ordered on a nominal basis (see ASME B36.10 and
ASME 836.19 for a tabulation of nominal wall thicknesses)