Spade and Spacers - ASME B16.47 A class 150 flanges

Material of spade and spacer is ASTM A516 Gr60.

Thickness t_m - design thickness is based on design pressure of 1965 kPag @ 21°C.

Thickness t_m is based on equation (15) from ASME B31.3 para 304.5.3.

Thickness "T" is the selected thickness of spade and spacer.
Add corrosion allowance to t_m where required.

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