API 5L Pipe Mass Calculators

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API 5L Line Pipe Mass Tolerance

Calculate API 5L line pipe unit mass (mass per length) and total mass from diameter, wall thickness and density.

Pipe mass can be calculated with API 5l tolerances, or as mass schedule with no tolerances. Tolerances can be calculated from API 5L, or specified as either a mass allowance or a mass fraction. To calculate mass per joint, enter the joint length as the pipe length. For construction quantities, enter the total pipe length as the pipe length. The API 5L negative tolerance is reduced if the total mass is greater than 18 tonne.

References :

API 5L : Specification for Line Pipe (2007)
ISO 3183 : Petroleum and Natural Gas Industries - Steel Pipe For Pipeline Transportation Systems (2007)

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CALCULATOR : Line Pipe Unit Mass And Total Mass Schedule (No Fabrication Tolerance) [FREE] ±

Calculate line pipe unit mass and total mass (construction quantities) from pipe length, diameter, wall thickness and density.

Select the pipe schedule (NPS or ISO), pipe diameter and wall thickness, or use the user defined option. Use the Result Table option to display the pipe schedule with unit mass and total mass for the selected diameter.

Tool Input

schdtype : Schedule Type
diamtype : Diameter Type
- ODu : User Defined Outside Diameter
- IDu : User Defined Inside Diameter
wtntype : Wall Thickness Type
- tnu : User Defined Wall Thickness
modptype : Material Property Type
- ρpu : User Defined Pipe Density
L : Pipe Length

Tool Output

ρp : Pipe Density
ID : Nominal Inside Diameter
M : Pipe Total Mass
OD : Nominal Outside Diameter
OD/tn : Diameter Over Wall Thickness Ratio
m : Pipe Mass Per Length
tn : Nominal Wall Thickness

CALCULATOR : API 5L Section 9.11 Line Pipe Mass Per Length And Pipe Total Mass Tolerance [FREE] ±

Calculate API 5L pipe maximum and minimum mass per unit length and total mass from mass tolerance (Section 9.11).

The pipe nominal unit mass is calculated from the nominal diameter, nominal wall thickness, and the pipe density. The nominal total mass is calculated from the unit mass times the pipe length. Use the joint length to calculate joint mass, or pipeline length to calculate construction quantitites. For total mass greater than 18 tonne the allowable negative tolerance is reduced.

Tool Input

schdtype : Schedule Type
diamtype : Diameter Type
- ODu : User Defined Outside Diameter
- IDu : User Defined Inside Diameter
wtntype : Wall Thickness Type
- tnu : User Defined Wall Thickness
modptype : Pipe Material Type
- ρpu : User Defined Pipe Density
toltypet : Negative Mass Tolerance Type (For M ≥ 18 tonne)
toltypem : Mass Tolerance Type
- Mfxu+ : User Defined Positive Mass Fraction
- Mfxu- : User Defined Negative Mass Fraction
L : Pipe Joint Length

Tool Output

ρp : Pipe Density
ID : Pipe Inside Diameter
Mfx+ : Positive Mass Fraction
Mfx- : Negative Mass Fraction
Mmax : Maximum Pipe Total Mass
Mmin : Minimum Pipe Total Mass
Mnom : Nominal Pipe Total Mass
OD : Pipe Outside Diameter
OD/tn : Diameter Over Wall Thickness Ratio
mnom : Nominal Pipe Mass Per Unit Length
tn : Nominal Wall Thickness

API 5L Line Pipe Mass Tolerance

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