Data Of API 5L/A53/A106 Carbon Steel Pipe

Diameter Tolerances – Seamless And Welded Carbon Steel Pipe

Nominal Pipe Size Inches Outside Diameter Tolerances-Inches Or Percent of O.D.
A120(1) A53 A106 API-5L
Plus Minus Plus Minus Plus Minus Plus Minus
1/8- 11/2 IPS O.15" .031" .015" .031" .015" .031" .015" .031"
2-4 IPS 1% 1% 1% 1% .031" .031" 1% 1%
5-8 IPS 1% 1% 1% 1% .062" .031" 0.75% 0.75%
10 IPS-18 OD 1% 1% 1% 1% .093"(2) .031"(2) 0.75% 0.75%
20 OD-36 OD l% 1% 1% 1% .125"(2) .031"(2) 1% 1%
(1)Specification A120 has been discontinued.
(2)Some mills may require ± 1% of nominal O.D. for sizes over 10í IPS in heavy walls of A 106 pipe.

Wall Tolerances – Seamless Carbon Steel Pipe

Nominal Pipe Size Inches Outside Diameter Tolerances-Inches Or Percent of O.D.
A120(1) A53 A106 API-5L
Plus Minus Plus Minus Plus Minus Plus Minus
1/8- 21/2 IPS By Wt. 12.5 By Wt. 12.5 By Wt. 12.5 20 12.5
3 IPS By Wt. 12.5 By Wt. 12.5 By Wi. 12.5 18 12.5
31/2 IPS-26 OD By Wt. 12.5 By Wt. 12.5(2) By Wt. 12.5(2) 15 12.5
(1)Specification A120 has been discontinued.

(2Some mills may require ± 12.5% of nominal wall for sizes over 10" IPS

 in heavy walls of A53 & A106 pipe.

Wall Tolerances – Welded Carbon Steel Pipe

Nominal Pipe Size Inches Outside Diameter Tolerances-Inches Or Percent of O.D.
A120(1) A53 A106 API-5L
Plus Minus Plus Minus Plus Minus Plus Minus
1/8- 21/2 IPS By Wt. 12.5 By Wt. 12.5 Available Only As 20 12.5
3 IPS By Wt. 12.5 By Wt. 12.5     18 12.5
31/2 IPS-18 OD By Wt. 12.5 By Wt. 12.5     15 12.5
20 OD-26 OD By Wt. 12.5 By Wt. 12.5 Seamless Pipe 17.5 10
(1)Specification A120 had been discontinued.

Typical Properties Of Carbon Steel Pipe

Grade

 Designation

Chemistry

Tensile

 KSI

Yield

 KSI

Elong.

 Percent In 2"

C Mn P S Si
A106B Smls. .30 max 0.29-1.06 0.048 max 0.058 max 0.10 min 60 min 35 min 30 min
A53B Smls. .30 max 1.20 max 0.05 max 0.06 max - 60 mm 35 mm 30 min
SLB Smls. .27 max 1.15 max 0.04 max 0.05 max - 60 min 35 min 30 min

 


This entry was posted in Pipe Technology and News. Bookmark the permalink.