Pipe Grades

Pipe Grades

Grade refers to divisions within different types of seamless and ERW pipe and designates mechanical properties such as minimum yield and tensile strengths. Grade B has higher tensile and yield strength than Grade A.It is manufactured to higher carbon content steel. Grade A, being a softer steel, is easier to bend and is recommended for use in close coiling and cold bending. Grade B has higher stress values and is better suited for machining operations .Grade C, which is available in ASTM-106, has higher tensile and yield strength than Grades A & B.

A-120 (has


been


withdrawn)


NPS 1/8 - 16


 


CW


ERW


SMLS


 


None


Specified


None Specified


Blk & Galv Welded & SMLS


pipe for ordinary use - not


Intended for close coiling


bending or high


temperature service


 


A-53


NPS 1/8 - 26


 


CW -


Type F


ERW -


Type E


SMLS -


Type S


 


CW -


Type F


ERW & SMLS


Grade A & B


 


MIN. P.S.I.


Grade  Yield     Tensile


C W     25,000  45,000


GR-A   30,000  48,000


GR-B   35,000  60,000


Blk & Galv Welded &


SMLS pipe suitable for


welding and forming


operations CW not


intended for flanging.


Grade B not intended for


close coiling or severe


cold forming.


 


A-106


NPS 1/8 - 26


 


SMLS


Grades A, B & C


MIN P.S.I.


Grade  Yield     Tensile


A         30,000   48,000


B        35,000    60,000


C        40,000    70,000


 


SMLS for high


temperature service.


Suitable for bending,


flanging, and similar


forming operations.


 


A-135


NPS 2-30


 


ERW


 


 


Grades A & B


MIN. P.S.I.


Grade  Yield    Tensile


A         30,000  48,000


B         35,000  60,000


 


Electric resistance welded


for conveying fluid, gas or


vapor


 


A-252


NPS 6 - 24


 


ERW


SMLS


DSAW


 


Grades 1, 2, 3


MIN. P.S.I.


Grade Yield     Tensile


1          30,000  50,000


2          35,000  60,000


3          40,000  66,000


 


ERW or SMLS


for Pipe Piles


A-333


SMLS


ERW


 


1, 3, 4, 6, 7, 8, 9


MIN. P.S.I.


Grade Yield    Tensile


1        30,000  50,000


2        35,000  65,000


3        35,000  60,000


6        35,000  60,000


7        35,000  65,000


8        75,000  100,000


9        46,000  63,000


10      65,000  80,000


11      35,000  65,000


 


SMLS & Welded Carbon &


Alloy Steel pipe for low


temperature service


 


A-335


NPS 1/8 - 26


 


SMLS


P1, P2, P5, P5b,


P5c, P9, P11, P12,


P15, P21, P22, P91


 


MIN. P.S.I.


Grade  Yield     Tensile


P1       30,000   55,000


P2       30,000   55,000


P-91    60,000   85,000


All


Others 30,000   60,000


 


SMLS Alloy Steel Pipe for


high temperature service


 


A-501 Round


SMLS


Welded


 


None


Specified


MIN. P.S.I.


Yield       Tensile


36,000     58,000


 


Hot Formed Welded &


SMLS Round, Square &


Rectangular Tubing


 


A-587


NPS 1/2" - 10


 


ERW


None


Specified


 


MIN. P.S.I.


Yield        Tensile


30,000     48,000


 


EW Pipe for process lines


suitable for severe forming


involving flanging and


close bending


A-589


Type 1


NPS 6-16


 


Type 1


SMLS or Welded


Type 1


A or B


MIN. P.S.I.


Grade  Yield Tensile


C W    25,000 45,000


A         30,000 48,000


B         35,000 60,000


 


SMLS & Welded Water


Pipe


Type 1


Drive Pipe


 


 


Type II


NPS 1-12


Type III


NPS 1-2


Type IV


NPS 3-8


 


Type II


SMLS, ERW or CW


 


Type III


SMLS, ERW or CW


 


Type IV


SMLS, ERW or CW


 


Type II


A or CW


 


 


Type III


A or CW


 


 


Type IV


A or CW


 


MIN. P.S.I.


Grade Yield    Tensile


C W    25,000  45,000


A        30,000  48,000


B        35,000   60,000


 


 


Type II


Water well reamed and drifted


 


Type III


Driven well pipe


 


 


Type IV


Water well casing


 


API 5L


 


 


CW, ERW, SMLS


DSAW


 


CW


Grade 25


DSAW


ERW & SMLS


Grades A & B


 


MIN. P.S.I.


Grade  Yield     Tensile


A-25    25,000   45,000


A         30,000   48,000


B         35,000   60,000


 


Welded and SMLS


Line pipe


API 5LX


ERW & SMLS


DSAW


 


X-42 X-46


X-52 X-60


X-65 X-70


X-80


 


MIN. P.S.I.


Grade  Yield    Tensile


X-42    42,000  60,000


X-46    46,000  63,000


X-52    52,000  66,000


X-60    60,000  75,000


 


Welded and SMLS


High test line pipe


 


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