Especificacion api 5l

Pipe Specification API 5L Specification
Scope Kinds of Steel Permitted For Pipe Material Hot-Dipped Galvanizing Permissible Variations in Wall Thickness

API 5L

NPS 1/8 -- 26

Covers WELDEDand SEAMLESS pipe suitable for use in conveying gas, water, and oil in both the oil and natural gas industries. Open-hearth Basic-oxygen Electric-furnace May be ordered galvanized. Grade A, B, A25 X42through X80 NPS 2 1/2 and smaller -- Seamless and welded, % +20 -- 12.5 +15 -- 12.5 NPS 3 -- Seamless and welded, % +18 -- 12.5 +15 -- 12.5 NPS 4 through 18 -- Seamless and welded, % +15 -- 12.5 +15-- 12.5 NPS 20 and larger -- Welded, % +17.5 -- 10.0 +19.5 -- 8.0 NPS 20 and larger -- Seamless, % +15.0 -- 12.5 +17.5 -- 10.0 C max % Mn max % P max % S max % Seamless or ERW Grade A 0.25 0.95 0.050.06 Grade B 0.30 1.20 0.05 0.06 Continuous-weld 0.08 0.06 Lists minimum yield and tensile strength for all grads as well as a maximum tensile strength for X80. Maximum yield-to-tensile ratios outlinedfor cold-expanded pipe--may be waived when a fracture toughness requirement is specified. Lists hydrostatic inspection test pressures Test Pressures are held for not less than: for all sizes andgrades covered by the Seamless (all sizes) -- 5 seconds specification. Welded (NPS 18 and smaller) -- 5 seconds (NPS 20 and larger) -- 10 seconds For each length of Standard Weight, Regular Weight, ForSpecial Plain End -- Not more than plus 10% minus 5%. Extra Strong, and Double Extra Strong -- Not more than plus 10% minus 3.5%. For Carload Lots -- Not more than minus 1.75%. Outside Diameter SizesOver Under at any point shall not vary from standard specified more than: ------------------------------------------------------------------NPS 1 1/2 and smaller 1/64" 1/32" NPS 2 through 4 1% 1%(Buttweld Only) NPS 2 through 18 .75% .75% NPS 20 through 26 Non-expanded 1% 1% Tensile Test Bending Test (Cold) -- 2" and smaller Buttweld. Seamless and Buttwelded -- All Sizes -- Longitudinal Specimens...