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API 5L X52 Pipe Specification (PSL1 & PSL2) 

API 5L X52 pipe — a name that’s become synonymous with durability, performance, and trust in high-pressure environments.
From transporting crude oil across deserts to distributing natural gas beneath bustling cities, X52 line pipe quietly powers industries across the globe. But what exactly makes it so essential? And what should you know before placing an order — especially in 2025, when steel prices and industry standards continue to evolve?
Let’s explore everything about API 5L X52 pipes, including the difference between PSL1 and PSL2, applications, mechanical and chemical properties, and current pricing in the Indian market.
API 5L Grade X52 ( PSL-1& PSL-2)  Pipe
 
 

What is API 5L X52 Pipe?

API 5L X52 is a carbon steel line pipe manufactured to API (American Petroleum Institute) Specification 5L, which is the international benchmark for transporting oil, gas, and water via pipeline.
  • X52 stands for a minimum yield strength of 52,000 PSI (or 360 MPa).
  • It is classified under Grade L390, which also aligns with ISO 3183 standards.
  • Available in seamless and welded forms (ERW, LSAW, DSAW), it can handle both low and high-pressure flow lines.
  • It’s widely used across onshore pipelines, offshore platforms, petrochemical plants, and municipal water projects.
     
This pipe isn’t a luxury—it’s a necessity where reliability and safety are non-negotiable.
 

Why Choose API 5L X52?

There’s a reason engineers and procurement managers around the world trust API 5L X52. It strikes a balance between strength, ductility, affordability, and ease of welding — essential for projects where thousands of meters of pipe are installed in varying terrains.
  •  It offers better tensile and yield strength than lower grades like X42 and X46.
  •  It’s cheaper and easier to weld than higher grades like X60, X65, or X70.
  •  It can resist environmental stress, including corrosion, temperature shifts, and pressure changes.
  •  Available in PSL1 and PSL2, it caters to both standard and critical applications.

PSL1 vs PSL2: What’s the Difference?

This is one of the most common questions buyers have. API 5L specifies two Product Specification Levels (PSLs) — and they differ significantly in terms of quality control, chemical composition, and testing requirements.
 
🔹 PSL1 – The General Grade
  • Basic level pipe for standard services
  • Suitable for low-risk applications
  • Chemical composition tolerances are broader
  • No impact (Charpy) testing required
  • Less expensive and easier to procure
     
🔸 PSL2 – The Critical Grade
  • Higher quality with stricter testing
  • Used for sour service, deep sea, and critical flow lines
  • Impact toughness testing is mandatory (CVN at 0°C or -20°C)
  • Lower max limits of sulfur and phosphorus
  • NACE-compliant for hydrogen sulfide environment
  • Better weldability, toughness, and durability
     
If your project involves high pressure, acidic conditions, or offshore drilling, PSL2 is the safer choice.
API 5L X52 PSL2 Pipe Data Sheet
API5L 45th Edition Specification for Line Pipe
Scope Specified the manufacture of two product levels (PSL1 and PSL2) of seamless and welded steel pipe for the use of a pipeline in the transportation of petroleum and natural gas. For material use in a Sour service application refer to Annex H and for offshore service application refer to Annex J of API5L 45th.
 
 

API 5L X52 Pipe Grades and acceptable Delivery Conditions: 

PSL
Delivery Condition
Pipe grade
PSL1
As-rolled, normalized, normalizing formed
A
 
As-rolled, normalizing rolled, thermomechanical rolled, thermo-mechanical formed, normalizing formed, normalized, normalized and tempered or if agreed Q&T SMLS only
B
 
As-rolled, normalizing rolled, thermomechanical rolled, thermo-mechanical formed, normalizing formed, normalized, normalized and tempered
X42, X46, X52, X56, X60, X65, X70
PSL 2
As-rolled
BR, X42R
 
Normalizing rolled, normalizing formed, normalized or normalized and tempered
BN, X42N, X46N, X52N, X56N, X60N
 
Quenched and tempered
BQ, X42Q, X46Q, X56Q, X60Q, X65Q, X70Q, X80Q, X90Q, X100Q
 
Thermomechanical rolled or thermomechanical formed
BM, X42M, X46M, X56M, X60M, X65M, X70M, X80M
 
Thermomechanical rolled
X90M, X100M, X120M
 
The suffice (R, N, Q or M) for PSL2 grades, belongs to the steel grade
 
 

API 5L X52 Ordering Information

The purchase order shall include the quantity, PSL level, type or Grade, reference to API5L, outside diameter, wall thickness, length and any applicable annexes or additional requirements related to chemical composition, mechanical properties, heat treatment, additional testing, manufacturing process, surface coatings or end finish.

 

API 5L X52 Pipe Starting Material

Ingots, blooms, billets, coils or plates used for the manufacture of pipe shall be made by the following processes, basic oxygen, electric furnace or open hearth in combination with a ladle refining process. For PSL2, the steel shall be killed and melted according to a fine grain practice. Coil or plate used for PSL2 pipe shall not contain any repair welds.
 

API 5L X52 Pipe Process of Manufacturing

Type of Pipe
PSL 1
PSL 2
Grade A
Grade B
X42 to X70
B to X80
X80 to X100
SMLS
✔
✔
✔
✔
✔
LFW
✔
✔
✔
 
 
HFW
✔
✔
✔
✔
 
LW
 
 
✔
 
 
SAWL
✔
✔
✔
✔
✔
SAWH
✔
✔
✔
✔
✔
 
SMLS – Seamless, without weldLFW – Low frequency welded pipe, <70 kHzHFW – High frequency welded pipe, >70 kHzSAWL – Submerge-arc welding longitudinal weldedSAWH – Submerge-arc welding helical welded
 

API 5L X52 Specification

Specification
API 5L X52, ASTM A1024 / A1024M, ISO 3183
Scope
Covers Welded, ERW and seamless pipe mostly used to conveying water, gas and oil in both the oil and natural gas industries.
Hot-Dipped Galvanizing
May be ordered galvanized.
Supplying techniques
X52 Welded
  • Straight seam submerged arc welding pipe(LSAW)
  • Resistance welded pipe (ERW)
  • Spiral submerged arc welded pipe (SSAW)
X52 Seamless
 
Api 5l Grade X52 Lsaw Pipe Standard
API 5L X52 (Specification for Line Pipe – ANSI/API specification 5L – 44th Edition, October 1, 2007)
Api 5l X52 Steel Pipe End
Plain, Bevel, Screwed, Threaded
Packing
API 5L X52 GR. B Pipe Packed in Wooden Boxes, Plastic Bags, Steel Strips Bundled, or as per Customers Requests
Testing and Inspection Reports
EN 10204 3.1, PMI Test Reports, Visual Inspection Reports, Third Party Inspection Reports, Destructive Test Report, Non Destructive Test Reports, Mill TC EN 10204 3.1, NABL Approved Lab, Chemical and Mechanical Reports, India Boiler Regulations (IBR) Test Certificate
Api 5l X52 Material Sizes
Nominal Pipe Size 1/2″ to 48 ” O.D.
Wall Thickness – Schedule 10 through 160, STD, XS, XXS.
Application & uses
Suitable for Conveying gas, water, oil, and other liquefied media.
API 5L X52 Pipes Type
Seamless / ERW / Welded / Fabricated / CDW
Thickness
SCH 40, SCH 80, SCH 160, SCH XS, SCH XXS, All Schedules
API 5L X52 Line Pipe Length
Single Random, Double Random & Required Length, Custom Size – 12 Meter lengths
Api 5l X52 Psl2 Pipe Finishes
Bare, Oiled, Mill Varnish, Galv, FBE, FBE Dual, 3LPE, 3LPP, Coal Tar, Concrete Coating and Tape Wrap.End Finishes:Beveled, Square Cut, Threaded & Coupled.
Product Specification Level (PSL)
API 5L X52 PSL 2
API 5L X52 PSL 1
Api 5l X52 S355 Pipe Applications
Oil Refineries, Petrochemicals, Power Generation (Nuclear/Thermal), Steel, Sugar, Boiler Equipments, Pressure Vessels and General Engineering Purposes
Specialist In
Api 5l X52 Pipe Suppliers, Api 5l X52 Erw Pipe , Api 5l X52 Seamless Pipe Suppliers, Api 5l X52 Psl2
Api 5l X52 Welded Pipe Value added service
  • Fusion Bond Epoxy
  • Galvanizing
  • Sand Blasting
  • Tar Epoxy
  • Bending
  • 3LPE
  • Heat Treatment
  • Machining
  • Draw & Expansion as per required Size & Length etc.
  • Annealed
  • ARO
BS EN 10208-2:2009
API 5L X52 pipelines for combustible fluids. Suitable to use in maximum operating pressure over 16 bar.


Api 5l X52 Dsaw Pipe yield strength

Grade
Yield Strength
Tensile Strength
Yield to Tensile
Elongation
 
min. (KSI)
min. (KSI)
Ratio (max)
%
API 5L X52
52
66
0.93
21
 

API 5L-PSL 1 Mechanical Properties

Grade
Yield Strength Mpa
Tensile Strength Mpa
Elongation
B
245
415
c
X52
360
460
c
 

API 5L-PSL 2 Mechanical Properties

Grade
Yield Strength Mpa
Tensile Strength Mpa
Raito
Elongation
 
min
max
min
max
max
min
BN
245
450
415
655
0.93
f
BQ
X52N
360
530
460
760
0.93
f
 
Api 5l X52 Seamless Pipe Suppliers Properties

API 5L X52 Pipe Chemical Composition

Grade
C max
Mn max
P
S max
V max
Nb max
Ti max
min
max
B
0.28
1.2
–
0.03
0.03
c.d
c,d
d
X52
0.28
1.4
–
0.03
0.03
d
d
d
Tycoon Piping also makes sure to carry a wide range of Api 5l X52 Pipe Suppliers
 

API 5L-PSL 2 Chemical Requirements

Grade
Composition, %
C
Si
Mn
P
S
V
Nb
Ti
Other
 
BN
0.24
0.4
1.2
0.025
0.015
c
c
0.04
e,l
 
X52N
0.24
0.45
1.4
0.025
0.015
0.1
0.1
0.04
d,e,l
 
BQ
0.18
0.45
1.4
0.025
0.015
0.05
0.05
0.04
e,l
 
X52Q
0.18
0.45
1.5
0.025
0.015
0.05
0.05
0.04
e,l
 
L360 Welded Pipe Exporter in India, API 5L X52 ERW Pipe at Best Price
 
Grade
C
Si
Mn
P
S
V
Nb
Ti
API 5L X52
0.16
0.45
1.65
0.020
0.010
0.07
0.05
0.04

API 5L X52 Equivalent Material

ASTM API 5L
Specification for line pipe
Material Grade
PSL1
L360 or x52
Material Grade
PSL2
L360N or X52N
L360Q or X52Q
L360M or X52M

API 5L X52 Pipe Price List

API 5L X52 Line Pipe Stock in Mumbai and API 5L X52 PSL1 Pipe and API 5L X65 PSL2 Pipe Price List
API 5L X52 Welded Pipe Suppliers in India ,  API 5L X52 Welded Pipe Suppliers price per Kg in India
INR: 225/Kg approx.
API 5L X52 Seamless Pipe Suppliers in India, , API 5L X52 
 
Seamless Pipe Suppliers price per Kg in India
INR: 2750/Kg approx.
 

API 5L X52 pipe wall thickness & schedule chart

Nominal wall thickness & Dimensions for API 5L X52 Pipe and API 5L GR.B X52 seamless pipes according ANSI B36.10:
NPS
(in)
Outside Diameter
(in)
API 5L X52 Pipe Schedule
SCH 10
SCH 20
SCH 30
SCH STD
SCH 40
SCH 60
SCH XS
SCH 80
SCH 100
SCH 120
SCH 140
SCH 160
SCH XXS
Wall Thickness (in)
1/8
0.405
   
0.068
0.068
 
0.095
0.095
     
1/4
0.540
   
0.088
0.088
 
0.119
0.119
     
3/8
0.675
   
0.091
0.091
 
0.126
0.126
     
1/2
0.840
   
0.109
0.109
 
0.147
0.147
   
0.187
0.294
3/4
1.050
   
0.113
0.113
 
0.154
0.154
   
0.219
0.308
1
1.315
   
0.133
0.133
 
0.179
0.179
   
0.250
0.358
1 1/4
1.660
   
0.140
0.140
 
0.191
0.191
   
0.250
0.382
1 1/2
1.900
   
0.145
0.145
 
0.200
0.200
   
0.281
0.400
2
2.375
   
0.154
0.154
 
0.218
0.218
   
0.344
0.436
2 1/2
2.875
   
0.203
0.203
 
0.276
0.276
   
0.375
0.552
3
3.500
   
0.216
0.216
 
0.300
0.300
   
0.438
0.600
3 1/2
4.000
   
0.226
0.226
 
0.318
0.318
     
4
4.500
   
0.237
0.237
 
0.337
0.337
 
0.438
 
0.531
0.674
5
5.563
   
0.258
0.258
 
0.375
0.375
 
0.500
 
0.625
0.750
6
6.625
   
0.280
0.280
 
0.432
0.432
 
0.562
 
0.719
0.864
8
8.625
 
0.250
0.277
0.322
0.322
0.406
0.500
0.500
0.594
0.719
0.812
0.906
0.875
10
10.750
 
0.250
0.307
0.365
0.365
0.500
0.500
0.594
0.719
0.844
1.000
1.125
1.000
12
12.750
 
0.250
0.330
0.375
0.406
0.562
0.500
0.688
0.844
1.000
1.125
1.312
1.000
14
14.000
0.250
0.312
0.375
0.375
0.438
0.594
0.500
0.750
0.938
1.094
1.250
1.406
 
16
16.000
0.250
0.312
0.375
0.375
0.500
0.656
0.500
0.844
1.031
1.219
1.438
1.594
 
18
18.000
0.250
0.312
0.438
0.375
0.562
0.750
0.500
0.938
1.156
1.375
1.562
1.781
 
20
20.000
0.250
0.375
0.500
0.375
0.594
0.812
0.500
1.031
1.281
1.500
1.750
1.969
 
22
22.000
0.250
0.375
0.500
0.375
 
0.875
0.500
1.125
1.375
1.625
1.875
2.125
 
24
24.000
0.250
0.375
0.562
0.375
0.688
0.969
0.500
1.219
1.531
1.812
2.062
2.344
 
30
30.000
0.312
0.500
0.625
0.375
  
0.500
      
32
32.000
0.312
0.500
0.625
0.375
0.688
        
34
34.000
0.312
0.500
0.625
0.375
0.688
        
36
36.000
0.312
0.500
0.625
0.375
0.750
        
42
42.000
 
0.500
0.625
0.375
0.750
        
L360 PSL1 material and API 5L X52 PSL2 Pipe Supplier and also check API 5L grade x52 carbon steel pipe wall thickness, dimensions & pressure rating
SCHEDULE 80 API 5L X52M AND X52N PIPE, API 5L X52 ERW Pipe, API 5l x52 psl2 Pipe, API 5l x52 welded pipe, API 5l grade x52 lsaw Pipe
  • XXS – Double Extra Strong
  • XS – Extra Strong
  • STD – Standard
 
 

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Applications of API 5L X52 Pipes

API 5L X52 pipes are used where pressure, performance, and longevity matter.
  • Oil & Gas Pipelines : The primary use. Handles high-pressure flow of crude oil, refined fuels, and natural gas.
  •  Petrochemical Industries: Used in refineries and plants to transport chemicals and hydrocarbons safely.
  •  Water Transmission Lines : Municipal water supply networks use X52 for its long life and strength.
  •  Offshore Platforms : PSL2 X52 is used in marine environments, resisting saltwater corrosion and sub-sea pressure.
  • Construction & Structural : Used as support columns or piling in industrial infrastructure and bridges.

Why API 5L X52 Pipe is a Smart Investment in 2025

In an era where every drop of oil and every molecule of gas must be transported safely and efficiently, API 5L X52 pipes are more than steel tubes — they’re lifelines for industries and infrastructure. Whether you’re laying hundreds of kilometers of underground gas pipelines or connecting offshore rigs to the mainland, X52 offers unmatched cost-efficiency, strength, and longevity. In 2025, with steel demand and energy infrastructure growing rapidly in India and globally, choosing the right pipe grade today means avoiding costly repairs tomorrow.
Need a trusted supplier for API 5L X52 PSL1 or PSL2 pipes in India?
Make sure your vendor provides proper certifications, material traceability, and third-party testing. A few rupees saved today can cost lakhs tomorrow if quality is compromised.
 

Ready to Ship, Wherever You Need Reliable Supplies for your next big project?                             

Whether you’re based in India or shipping internationally, we’re here to make sourcing simple. We supply across the USA, Canada, Australia, Germany, Brazil , and the United Kingdom. Fast quotes, custom sizes, and bulk orders available.
 
Let us know what you need—we’ll take care of the rest 
Supplies from Different Countries

Supplies from Different Countries

Flag Country Code
🇮🇳 India IN
🇺🇸 United States US
🇬🇧 United Kingdom GB
🇨🇳 China CN
🇯🇵 Japan JP
🇩🇪 Germany DE
🇮🇹 Italy IT
🇹🇷 Turkey TR
🇦🇪 United Arab Emirates AE
🇸🇦 Saudi Arabia SA
🇶🇦 Qatar QA
🇴🇲 Oman OM
🇰🇼 Kuwait KW
🇦🇺 Australia AU
🇨🇦 Canada CA
🇳🇱 Netherlands NL
🇮🇩 Indonesia ID
🇪🇬 Egypt EG