Delivery conditions of API 5L pipes

Sometimes client would ask for the material like L415N,do you know what the meaning is? Actually it indicate the delivery condition under API 5L.

Take L415N for example,L means line pipe,415 means specified minimum yield strength in MPa and,N means normalized which described the delivery condition for PSL2 pipe.

API 5L PSL2 X70 seamless steel pipes

API 5L PSL2 X70 seamless steel pipes

Pipe grades,steel grades and acceptable delivery conditions

PSL Delivery condition Pipe grade/steel grade
 

 

 

PSL1

As-rolled,normalizing rolled,normalized or normalizing formed L175 or A25
L175P or A25P
L210 or A
As-rolled,normalizing rolled,thermomechanical rolled,thermomechanical formed,normalizing formed,normalized,normalized and tempered;or,if agreed,quenched and tempered for SMLS pipe only L245 or B
As-rolled,normalizing rolled,thermomechanical rolled,thermomechanical formed,normalizing formed,normalized,normalized and tempered or quenched and tempered L290 or X42
L320 or X46
L360 or X52
L390 or X56
L415 or X60
L450 or X65
L485 or X70
 

 

 

 

 

 

PSL2

 

As-rolled L245R or BR
L290R or X42R
Normalizing rolled,normalizing formed,

normalized,normalized and tempered

L245N or BN
L290N or X42N
L320N or X46N
L360N or X52N
L390N or X56N
L415N or X60N
Quenched and tempered L245Q or BQ
L290Q or X42Q
L320Q or X46Q
L360Q or X52Q
L390Q or X56Q
L415Q or X60Q
L450Q or X65Q
L485Q or X70Q
L555Q or X80Q
L625Q or X90Q (seamless only)
L690Q or X100Q(seamless only)
Thermomechanical rolled or thermomechanical formed L245M or BM
L290M or X42M
L320M or X46M
L360M or X52M
L390M or X56M
L415M or X60M
L450M or X65M
L485M or X70M
L555M or X80M
Thermomechanical rolled L625M or X90M
L690M or X100M
L830M or X120M

Under API 5L,the steel grade shall be in one of the following formats for intermediate grades:

(1)The letter L followed by the specified minimum yield strength in MPa and,for PSL2 pipe,the letter describing the delivery condition(R,N,Q or M)consistent with the above formats.

(2)The letter X followed by a two or three digit number equal to the specified minimum yield strength in 1000psi rounded down to the nearest integer and,for PSL2 pipe,the letter describing the delivery condition(R,N,Q or M) consistent with the above formats.

As the professional supplier of piping products,Haihao Group could provide clients the API 5L pipes under different delivery conditions.

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