Flange Bolt Load Calculator

Calculate required bolt preload, gasket seating stress, and operating condition forces for flanged joints per ASME PCC-1.

Internal pressure of the piping system.
MPa
Mean gasket diameter.
mm
Effective seating width of the gasket.
mm
Maintenance factor. Spiral wound: 3.0, Ring joint: 5.5.
Seating stress. Spiral wound: 69 MPa, Ring joint: 179 MPa.
MPa
Number of bolts in the flange.

Results

Hydrostatic End Force-kN
Operating Bolt Load Wm1-kN
Seating Bolt Load Wm2-kN
Load per Bolt-kN
References: ASME PCC-1; ASME BPVC VIII Div. 1 — Appendix 2