API5LBPSL1
Standard specification for seamless and welded carbon steel line pipe

Outside Diameter: .405" - 84"
OD Tolerance < 2.375": .016" - .063" (Seamless & Welded)                                                                                                                                                                                                       OD Tolerance 6.625" - 24": +/- .063" (Seamless & Welded)                                                                                                                                                                                                       OD Tolerance > 24": +/- .079" (Seamless)     +/- .063" (Welded)


Wall thickness: .068" - 2.05"
Wall Tolerance < .157" (Seamless): .024" - .02"                                                                                                                                                                                                                         Wall Tolerance .157" - .984" (Seamless): + (.150 * wall thickness)  - (.125" * wall thickness)                                                                                                                                                  Wall Tolerance > .984" (Seamless): +.146"  -.120"                                                                                                                                                                                                                    Wall Tolerance < .197" (Welded): +/-" .02"                                                                                                                                                                                                                                 Wall Tolerance .197" - .591" (Welded): +/- (.1 * wall thickness)                                                                                                                                                                                            Wall Tolerance > .591" (Welded): +/- .06"


Minimum Yield: 35,500 PSI
Minimum Tensile:60,200 PSI

Chemical Requirements (Seamless): C (max) Mn (max) P (max) S (max)              
% .28 1.20 .03  .03              

 

Chemical Requirements (Welded): C (max) Mn (max) P (max) S (max)              
% .26 1.20 .03  .03