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ASME B31.4-2025 Tools
Pipeline Transportation Systems for Liquids and Slurries
Wall Thickness
Longitudinal Stress
Branch Reinforcement
Weld / Bend
Cover / Joint
Hydrostatic Test
Pipe Wall Thickness Design
Internal Design Pressure, P (psi)
Nominal OD, D (in)
Allowable Stress, S (psi)
Design Factor, F
Weld Joint Factor, E
Temperature Derating, T
Pipe SMYS, Sy (psi)
Calculate Wall Thickness
Longitudinal Stress Combination
Pipe Condition
Unrestrained
Restrained
Hoop Stress, Sh (psi)
Longitudinal Stress, Sl (psi)
Thermal Stress, Sτ (psi)
Poisson Ratio, ν
Pipe SMYS, Sy (psi)
Calculate Combined Longitudinal Stress
Branch Connection Reinforcement
Cut-out Branch
Header OD, D (in)
Header Wall, Th (in)
Branch Wall, th (in)
Cutout Width, d (in)
Reinf. Zone Length, L (in)
Added Reinf. Area, A3 (in²)
Calculate Reinforcement
Extruded Outlet
Branch Wall, th (in)
Header OD, D₀ (in)
Branch OD, d (in)
Header Wall, Th (in)
Reinf. Zone, L (in)
Added Area, A3 (in²)
Calculate Reinforcement
Fillet Weld Size & Bend Radius
Fillet Weld Leg Size
Thinner Connected Part, Tb (in)
Adjacent Wall, Th (in)
Transition ratio (Tb/Th)
Calculate Weld Size
Minimum Field Cold Bend Radius
Nominal Pipe Size, NPS
Bend Angle (degrees)
Calculate
Miter Bend Limits
Hoop Stress, Sh (psi)
Pipe SMYS, Sy (psi)
Check Miter Limits
Cover Depth & Joint Factor Lookup
Minimum Cover Depth (Table 434.6-1)
Location Type
Under Highway
Under Railroad
Under Waterway
Rock/Congested Trench
Blasting Used?
No
Yes
Look Up Cover Depth
Table 403.2.1-1: Weld Joint Factor E
Weld Specification
Furnace Butt
Electric Resistance
Submerged Arc
Gas Welded
Forge Welded
Double SA
Examination Type
Perfect (100% RT)
Table Rated
As Welded
Look Up Joint Factor
Hydrostatic Test Pressure
Design Pressure (psi)
Pipe OD, D (in)
Pipe Wall, t (in)
Pipe SMYS, Sy (psi)
Calculate Test Pressures