Products Description
API 5L X52 seamless steel pipe is a high-strength carbon steel line pipe strictly manufactured in accordance with the API 5L international standard, specially designed for oil, natural gas, and fluid transmission pipeline systems. As a mainstream medium-grade pipeline steel, it balances excellent mechanical performance, weldability, and cost-effectiveness. The seamless manufacturing process eliminates welding seams, ensuring superior pressure resistance, corrosion resistance, and structural stability compared with welded pipes. It is available in two specification levels: PSL1 and PSL2, to meet general and high-standard industrial pipeline project requirements respectively.
1.Delivery Condition
Normalized Delivery (N): The most common delivery state for X52 seamless pipes. Normalization treatment refines the steel grain structure, eliminates internal stress, and delivers uniform toughness, ductility, and stable mechanical properties. Suitable for most conventional oil and gas transmission projects.
Hot Rolled Delivery (HR): Applicable for large-diameter and thick-wall X52 pipes. Maintains good plasticity and processability, convenient for subsequent cutting, bending, and welding construction.
Custom Heat Treatment: Quenched and tempered (Q&T) treatment is optional for PSL2 high-standard products used in low-temperature, high-pressure, or sour service environments to enhance comprehensive mechanical performance and impact resistance.
All delivered pipes are free of surface cracks, folds, delaminations, and internal defects, with uniform wall thickness and smooth inner/outer surfaces, meeting full export inspection standards
2.PSL1 vs PSL2 Core Difference
API 5L standard defines two product specification levels (PSL1 and PSL2) for X52 seamless pipes, with distinct requirements on chemical composition, mechanical properties, testing standards, and application scenarios. PSL2 is an upgraded high-standard version with stricter manufacturing and inspection specifications.
|
Inspection & Specification Item |
API 5L X52 PSL1 |
API 5L X52 PSL2 |
|---|---|---|
|
Yield Strength Range |
Min 359MPa (52ksi), no maximum limit |
360MPa (52.2ksi) ~ 530MPa (76.9ksi) (strict upper & lower limit control) |
|
Tensile Strength Range |
460MPa (66.7ksi) min, no maximum limit
|
485MPa ~ 620MPa (70~90ksi) (strict range control) |
|
Chemical Composition Control |
Conventional C, Si, Mn control; loose P & S limits
|
Tighter carbon equivalent control; stricter maximum limits for Phosphorus (≤0.030%) and Sulfur (≤0.030%) to improve corrosion resistance |
|
Impact Testing |
Not mandatory |
Mandatory Charpy V-Notch impact test at specified low temperature to ensure low-temperature toughness |
|
NDT Inspection |
Optional partial non-destructive testing |
Mandatory full-length NDT for pipe body and pipe ends, 100% defect detection |
|
Product Traceability |
Basic batch traceability |
Full independent single-pipe traceability, complete production & inspection records |
|
Applicable Scenarios |
Conventional water, oil, and general gas transmission, non-civil industrial pipelines |
Long-distance gas transmission, offshore pipelines, sour oil/gas service, high-pressure and low-temperature engineering projects |
3 Chemical Composition (Max Weight %)
|
Element |
PSL1 |
PSL2 |
|---|---|---|
|
Carbon (C) |
0.30 |
0.28 |
|
Silicon (Si) |
0.45 |
0.45 |
|
Manganese (Mn) |
1.60 |
1.50 |
|
Phosphorus (P) |
0.035 |
0.030 |
|
Sulfur (S) |
0.035 |
0.030 |
4 Mechanical Properties
|
Mechanical Property |
PSL1 X52 |
PSL2 X52 |
|---|---|---|
|
Minimum Yield Strength |
359 MPa (52,000 psi) |
360 MPa (52,200 psi) |
|
Yield Strength Max |
Unspecified |
530 MPa (76,900 psi) |
|
Minimum Tensile Strength |
460 MPa (66,700 psi) |
485 MPa (70,000 psi) |
|
Maximum Tensile Strength |
Unspecified |
620 MPa (90,000 psi) |
|
Elongation (Min) |
≥21% |
≥21% |
- Executive Standard: API 5L (Latest Version)
- Steel Grade: X52
- Product Type: Seamless Carbon Steel Pipe
- Specification Level: PSL1 / PSL2
- Manufacturing Process: Hot Piercing & Cold Drawing Seamless Process
Application Fields
API 5L X52 seamless pipe is a versatile pipeline material, widely used in global energy and industrial fluid transmission projects due to its stable pressure resistance, excellent weldability and durability:
- Oil & Gas Transmission: Long-distance onshore oil and natural gas trunk pipelines, regional gas distribution pipelines, oil field gathering and transportation pipelines
- Petrochemical Industry: Refinery fluid transmission pipelines, chemical medium conveying pipelines, low-pressure process pipeline systems
- Water Conservancy & Municipal Engineering: Urban water supply and drainage pipelines, industrial circulating water pipelines, cross-regional fluid transmission projects
- Energy Engineering: Thermal power plant auxiliary pipelines, offshore platform auxiliary pipelines, low-temperature and medium-pressure pipeline systems
- Sour Service Projects: PSL2 grade pipes are applicable for slightly corrosive oil-gas fields and harsh environment pipeline projects
FAQ
Q1: What is the main difference between API 5L X52 PSL1 and PSL2?
PSL2 has stricter chemical composition limits, fixed upper and lower mechanical property limits, mandatory Charpy impact testing and full-length NDT inspection, as well as complete single-pipe traceability. PSL1 only meets basic tensile and chemical requirements without mandatory impact test and full NDT. PSL2 is for high-standard, harsh-condition projects, while PSL1 is for conventional general pipelines.
Q2: What is the delivery time for export orders?
Conventional stock sizes can be delivered within 7-10 working days. Customized sizes and PSL2 high-standard products take 15-25 working days. We support FOB, CIF, CFR and other international trade terms.
Q3: What quality certificates can you provide?
We can provide official factory test certificates (MTC), API certification, third-party inspection reports (SGS, BV, TUV), full material traceability documents and export customs clearance documents to meet global project bidding and inspection requirements.
Q4: Is API 5L X52 seamless pipe suitable for low-temperature environments?
PSL1 X52 is suitable for normal temperature environments. PSL2 X52 with mandatory low-temperature Charpy impact test has excellent low-temperature toughness and can adapt to low-temperature and cold-region pipeline projects.
Q5: Do you support customized specifications and OEM service?
Yes. We support customized outer diameter, wall thickness, pipe length, surface treatment and packaging standards. We also provide customized marking, logo printing and exclusive export packaging services according to client requirements.
Q6: What is your packaging standard for export?
Pipes are protected with plastic end caps, bundled with steel strips, wrapped with waterproof woven bags. Wooden pallets or steel frames are adopted for small-size pipes to ensure no damage during long-distance sea and land transportation.
Our address
Rm1406,14th/F No 208, Hongqi Road, Nankai Dist, Tianjin City ,China
Phone Number (WhatsApp/Wechat)
+8616622033809
alisa@tjshenzhoutong.com
Hot Tags: api 5l x52 psl1 psl2 seamless steel pipe, China api 5l x52 psl1 psl2 seamless steel pipe manufacturers, suppliers, factory, seamless pipe for air conditioning systems, seamless pipe for nipple connection, seamless pipe for prevention system connection, seamless pipe for recovered operation system connection, seamless pipe for tracing system connection, seamless pipe for transportation system connection
