Flange Bolt-Up Torque
Target preload and short-form torque (T = K*D*F) per bolt plus the cross/star tightening sequence for a bolted flange joint.
Formula and source
F = stress * A_tensile; short-form torque T = K * D * F (D nominal bolt diameter). Cross/star tightening sequence per the ASME PCC-1 legacy pattern for the bolt count.
Bolt-preload torque by the short-form T = K*D*F and the cross/star tightening sequence, per ASME PCC-1 Guidelines for Pressure Boundary Bolted Flange Joint Assembly and the ASME B16.5 flange classes, by name.
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