API 5L X42 الأنابيب
Factory Direct Supply
290 MPa minimum yield strength. Available in Seamless, ERW, LSAW & SSAW. PSL1 & PSL2 with full HIC/SSC sour service testing. 35,000 m² factory, 5,000 tons permanent stock.
API 5L X42 Pipe Supplier
Direct Supply of Premium Quality | Stock Availability | Custom Processing
Gnee supplies API 5L X42 steel pipes, including seamless and welded (ERW/LSAW/SSAW) varieties. We offer a full range of sizes and custom anti-corrosion coatings (such as 3PE and FBE).
Our products are fully certified under ISO 9001 and API standards, and every shipment includes a comprehensive MTC (3.1/3.2) quality inspection report. With exports to over 100 countries worldwide, Gnee is your trusted, long-term partner.
Key Facts
- Also known as L290 pipe (ISO 3183 equivalent)
- Minimum yield strength: 290 MPa (42,000 psi)
- Minimum tensile strength: 415 MPa (60,200 psi)
- Available in Seamless (SMLS), ERW, LSAW, and SSAW forms
- Two product specification levels: PSL1 and PSL2
API 5L X42 Specification Table
| درجة | API 5L X42 (L290) |
| PSL Levels | PSL1 and PSL2 (R, N, Q, M delivery conditions) |
| أبعاد | 0.405 in – 84 in [10.3 mm – 2134 mm] |
| سمك الحائط | STD, XS, Schedule 40, Schedule 80, etc. (ASME B36.10M) |
| طلاء | Black, painted, galvanized, FBE, 3LPE, HDPE, 3LPP |
| Quotation | FOB, CFR, CIF supported |
| Min Yield Strength | 290 MPa (42,000 psi) |
| Min Tensile Strength | 415 MPa (60,200 psi) |
4 Main API 5L X42 Pipe Types For Sale
Each type suited to different applications and pressure requirements
سملسAPI 5L X42 Seamless Pipe
No welded seam. Stronger and more uniform. Used for high-pressure or critical service applications.
المتفجرات من مخلفات الحربAPI 5L X42 ERW Pipe
Cost-effective. Widely used for city gas distribution and smaller diameter pipelines.
LSAWAPI 5L X42 LSAW Pipe
Suitable for medium to large diameter pipe. Used in long-distance transmission pipelines.
SSAWAPI 5L X42 SSAW Pipe
Commonly used for large-diameter water and oil transmission lines.
More Information About API 5L X42 PSL1&PSL2
The following are the specific details of the steel pipe production process, tube ends, delivery condition and equivalent grades.
عمليات التصنيع
| درجة | سملس | أسبوع الموضة في لندن | إتش إف دبليو | ل.و | ساول | ساو | غطاء محرك السيارة | كوه |
|---|---|---|---|---|---|---|---|---|
| PSL1 X42 | ||||||||
| PSL2 X42 | — | — |
Delivery Conditions
| البولندي | حالة التسليم | تعيين الصف |
|---|---|---|
| بي إس إل 1 | مدرفلة كما هي، مدرفلة تطبيعية، مدرفلة حرارية ميكانيكية، مشكلة حرارية ميكانيكية، مشكلة تطبيعية، تطبيعية، تطبيعية ومخففة أو مطفأة ومخففة | L290 / X42 |
| بي إس إل 2 | كما تم لفها | L290R / X42R |
| تطبيع الدرفلة، تطبيع التشكيل، تطبيع، أو تطبيع وتطبيع | L290N / X42N | |
| مُطفأ ومُعتدل | L290Q / X42Q | |
| Thermomechanical rolled / formed | L290M / X42M |
Tube Ends
| درجة | Belled End | Plain End |
|---|---|---|
| PSL1 X42 | ||
| PSL2 X42 | — |
الدرجات المكافئة
| إن | CSA | ايزو | غيغابايت |
|---|---|---|---|
| EN 10208-2 L290 | CSA Z245.1 Grade 290 | ISO 3183 L290 | GB/T 9711 X42 |
PSL1 vs PSL2: Which Do You Need?
Two quality levels defined in the API 5L standard — choose based on your project requirements
| ميزة | بسل1 | بسل2 |
|---|---|---|
| المتطلبات الكيميائية | معيار | Stricter limits |
| Mechanical Testing | Basic tensile and yield | Includes Charpy impact and fracture toughness |
| NDT | Not always required | Required — UT, radiography, or other methods |
| إمكانية التتبع | معيار | Full heat traceability required |
| Sour Service Option | Not available | Available (with HIC/SSC testing) |
| Offshore Service | Not available | Available (per Annex J) |
| Carbon Equivalent | Not specified | Specified and controlled |
| Cost | Lower | Higher — due to extra testing and controls |
Choose PSL1 When
Standard onshore pipeline with moderate pressure and no special environmental risks. More affordable and covers most general pipeline construction needs.
Choose PSL2 When
Pipeline operates in demanding environments — H₂S gas (sour service), subsea locations, or where the client/design code specifically requires it. Saudi Aramco and ADNOC typically require PSL2 with additional HIC testing.
How Does X42 Compare to Other Grades?
X42 sits between Grade B and X52 — often the most cost-effective option
| درجة | Min Yield Strength | Min Tensile Strength | الاستخدام النموذجي |
|---|---|---|---|
| API 5L الصف ب | 245 MPa (35,500 psi) | 415 MPa (60,200 psi) | Very low pressure, general service |
| API 5L X42 ★ | 290 MPa (42,100 psi) | 415 MPa (60,200 psi) | Low to medium pressure pipelines, city gas networks |
| أبي 5L X52 | 360 MPa (52,200 psi) | 460 MPa (66,700 psi) | Medium pressure gathering lines, transmission |
| API 5L X60 | 415 MPa (60,200 psi) | 520 MPa (75,400 psi) | High-pressure long-distance transmission |
| أبي 5L X65 | 450 MPa (65,300 psi) | 535 MPa (77,600 psi) | High-pressure offshore and long-distance lines |
Key Takeaway: X42 is significantly stronger than Grade B, making it a better choice for most modern pipeline projects. If your design pressure does not require X52 or higher, X42 is often the most cost-effective option.
Where Is API 5L X42 Pipe Used?
Trusted across critical industries worldwide
Oil & Gas Transmission Pipelines
The largest use of API 5L X42 pipe. Transports crude oil, refined petroleum products, and natural gas from production sites to refineries, storage facilities, and end users. Handles the pressure and mechanical stresses of long-distance pipeline transportation.
City Gas Distribution Networks
X42 is the most common grades in low-pressure city gas networks. These networks deliver natural gas from regional supply points to residential areas, commercial buildings, and industrial users. Safe, durable, and easy to install in urban environments.
Gathering Lines
Collect oil or gas from individual wellheads and transport to central processing. PSL2 with HIC testing may be required for sour gas conditions.
Water Injection & Disposal
In oilfield operations, water is injected into reservoirs to maintain pressure and improve recovery. X42 handles large volumes of injection and disposal water.
Petrochemical Plants
Process piping for low-to-medium pressure services inside petrochemical plants and refineries, where good weldability and mild corrosion resistance are needed.
Heating, Chemical & Paper
Used in industrial heating systems, chemical transport, and paper mill infrastructure. Any industrial operation moving fluids or gases under controlled pressure.
Coating & Surface Treatment Options
Gnee offers a variety of steel pipe coating methods. Protecting your pipeline from corrosion in any environment.
Real Buyer Cases
How global customers use API 5L X42 pipe from Gnee
City Gas Distribution Network
Gnee Solution:Tons of API 5L X42 ERW pipe (4–12 inch), external FBE coating and PE sleeve joints for cathodic protection. Serving residential units across three districts.
Result: 14% lower cost than local distributor price. Two repeat orders placed for network expansion phases.
Onshore Crude Oil Pipeline
Gnee Solution:API 5L X42 PSL2 with HIC testing. 120km crude oil gathering pipeline. EN 10204 Type 3.1 mill certificates and Bureau Veritas third-party inspection. LSAW pipe in 16″ and 20″.
Result: HIC test and BV report accepted without queries. Gnee added to preferred vendor list.
Natural Gas Transmission Line
Gnee Solution:API 5L X42 seamless pipe for high-pressure feeder line connecting LNG terminal to national grid. 10″ and 12″ Schedule 80, PSL2 specification.
Result: Zero rejections at incoming inspection. Framework agreement signed for future pipeline projects.
Seawater Injection Pipeline
Gnee Solution:API 5L X42 PSL2 pipes for seawater injection system maintaining offshore reservoir pressure. External 3LPE coating and internal FBE lining for saline soil corrosion protection.
Result: Delivery accepted without quality holds. Client requested quotations for two additional pipeline segments.
Why Source API 5L X42 Pipe from Gnee?
- Full range: seamless, ERW, LSAW, SSAW in all standard sizes
- Both PSL1 and PSL2 available, with full HIC/SSC sour service testing
- All coating options: 3LPE, FBE, coal tar epoxy, internal lining
- Certifications: ISO 9001, API 5L, EN 10204 Type 3.1 and 3.2
- Third-party inspection: SGS, BV, TÜV hosted at our facility
- Experienced logistics and documentation team for global export
- 24-hour quote response, 365 days a year
أسئلة مكررة
Is API 5L X42 the same as L290?
Yes. L290 is the ISO 3183 designation for the same pipe. “X42” is the American API designation, while “L290” is the international ISO designation. Both refer to the same minimum yield strength of 290 MPa.
Can PSL2 be used in sour service (H₂S)?
Yes, but only with correct testing. You need PSL2 with HIC testing per NACE TM0284 and SSC testing per NACE TM0177. The pipe must meet hardness requirements per NACE MR0175 / ISO 15156. Always specify “sour service” or “Annex H” compliance.
What documents should I request with my order?
Always request: Mill Test Report (MTR) per EN 10204 Type 3.1, Certificate of Origin, Packing List, Commercial Invoice. For PSL2: Charpy impact test results, HIC/SSC test reports, hydrostatic test records, NDT reports, and third-party inspection certificate (SGS, BV, TÜV).
What is the difference between seamless and ERW X42?
Seamless pipe has no welded joint — stronger, more uniform, preferred for high-pressure and subsea applications. ERW pipe is made by rolling steel strip and welding edges — less expensive, widely used for city gas and onshore pipelines where pressure requirements are less demanding.
Is API 5L X42 easy to weld during field installation?
Yes. API 5L X42 has a low carbon equivalent (CE), offering excellent weldability without requiring complex preheating under standard conditions. It is fully compatible with common pipeline welding methods like SMAW, GMAW, and SAW.
How can I get an accurate price quote for API 5L X42 pipes?
To receive an exact quote, please send us your required Outer Diameter (OD), Wall Thickness (WT/Schedule), Length, Manufacturing Type (Seamless/ERW/LSAW), PSL Level (PSL1 or PSL2), and Coating Requirements.
Get a Factory Quote in 24 Hours
Tell us your specification and we will respond with a full price and delivery proposal
بريد إلكتروني: sale@gneesteelpipe.com
Response: 24-hour quote response, 365 days a year
Inspection: SGS, BV, TÜV available at our facility
Please Include in Your Inquiry:
- Grade: API 5L X42 (PSL1 or PSL2)
- Pipe type: Seamless / ERW / LSAW / SSAW
- Size: OD and wall thickness
- Coating requirement
- Quantity (metric tons or joints)
- Destination port
- Certifications and testing required
