🔧 ASME B16.5 Class 150-600 Stud Bolt Torque (Ft-Lbs) & Gasket Stress

ANSI Pipe Flange Bolt Torque & Gasket Sizing Calculator

Calculate target bolt torque (ft-lbs) for ASME B16.5 Class 150, 300, and 600 pipe flanges based on bolt diameter (B7 alloy steel studs), lubricant nut friction factor (K=0.13 to 0.17), and minimum spiral-wound gasket seating stress (PSI).

1. Project & Operating Inputs

Process Flange Joints to Torque (Flanges)

Average Pipe Diameter (Inches)

Customer Bid Price per Bolted Joint ($ / Joint Complete)

Spiral Gasket, B7 Studs & Fitter Labor ($ / Joint)

2. Financial Breakdown & Yield

ASME B16.5 FLANGE BOLT TORQUE

Turnkey Flange Bolting Profit

Pipefitting Margin

0.0%

Gross Revenue / Bill

Total Project CapEx

Operating / Material Cost