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API 5L Grade B Seamless Steel Pipe SCH80 Carbon Steel Pipe Manufacturer for Oil Gas Pipeline
| API 5L Steel Pipe Product Detail | |
| Grades | API 5L Grade B, X42, X52, X56, X60, X65, X70, X80 |
| Specification Level | PSL1, PSL2 |
| Outer Diameter Range | 1/2” to 2”, 3”, 4”, 6”, 8”, 10”, 12”, 16 inches, 18 inches, 20 inches, 24 inches up to 40 inches. |
| Thickness Schedule | SCH 10. SCH 20, SCH 40, SCH STD, SCH 80, SCH XS, to SCH 160 |
| Manufacturing Types | Seamless, Welded ERW, SAW in LSAW, DSAW, SSAW, HSAW |
| Ends Type | Beveled ends, Plain ends |
| Length Range | SRL , DRL , 20 FT (6 meters), 40FT (12 meters) or, customized |
| Protection Caps | plastic or iron |
| Surface Treatment | Natural, Varnished, Black Painting, FBE, 3PE (3LPE), 3PP, CWC (Concrete Weight Coated) CRA Clad or Lined |
API 5L Grade B Steel Pipe Size Chart
| Outside Diameter (OD) | Wall Thickness (WT) | Nominal Pipe Size (NPS) | Length | Steel Grade Available | Type |
| 21.3 mm (0.84 in) | 2.77 – 3.73 mm | ½″ | 5.8 m / 6 m / 12 m | Grade B – X56 | Seamless / ERW |
| 33.4 mm (1.315 in) | 2.77 – 4.55 mm | 1″ | 5.8 m / 6 m / 12 m | Grade B – X56 | Seamless / ERW |
| 60.3 mm (2.375 in) | 3.91 – 7.11 mm | 2″ | 5.8 m / 6 m / 12 m | Grade B – X60 | Seamless / ERW |
| 88.9 mm (3.5 in) | 4.78 – 9.27 mm | 3″ | 5.8 m / 6 m / 12 m | Grade B – X60 | Seamless / ERW |
| 114.3 mm (4.5 in) | 5.21 – 11.13 mm | 4″ | 6 m / 12 m / 18 m | Grade B – X65 | Seamless / ERW / SAW |
| 168.3 mm (6.625 in) | 5.56 – 14.27 mm | 6″ | 6 m / 12 m / 18 m | Grade B – X70 | Seamless / ERW / SAW |
| 219.1 mm (8.625 in) | 6.35 – 15.09 mm | 8″ | 6 m / 12 m / 18 m | X42 – X70 | ERW / SAW |
| 273.1 mm (10.75 in) | 6.35 – 19.05 mm | 10″ | 6 m / 12 m / 18 m | X42 – X70 | SAW |
| 323.9 mm (12.75 in) | 6.35 – 19.05 mm | 12″ | 6 m / 12 m / 18 m | X52 – X80 | SAW |
| 406.4 mm (16 in) | 7.92 – 22.23 mm | 16″ | 6 m / 12 m / 18 m | X56 – X80 | SAW |
| 508.0 mm (20 in) | 7.92 – 25.4 mm | 20″ | 6 m / 12 m / 18 m | X60 – X80 | SAW |
| 610.0 mm (24 in) | 9.53 – 25.4 mm | 24″ | 6 m / 12 m / 18 m | X60 – X80 | SAW |
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PSL 1 (Product Specification Level 1) : For pipelines built to a basic standard quality level.
PSL 2 (Product Specification Level 2) : Using higher mechanical properties, tighter chemical controls and NDT, more aggressive specification.
| Item | PSL1 | PSL2 | Notes |
| Chemical Composition Control | Standard limits on C, Mn, P, S | Stricter limits, lower P and S; additional microalloy element control allowed | PSL2 is more suitable for low-temperature and corrosive environments |
| Yield Strength (MPa) | According to grade specification | Same as PSL1; slightly higher for some high-grade steels | Basic mechanical requirements are similar |
| Tensile Strength (MPa) | According to grade specification | Same as PSL1 | |
| Elongation (%) | According to grade specification | Same as PSL1 | |
| Low-Temperature Impact (Charpy V-Notch) | Optional or per end-use requirement | Mandatory; typically tested at -20°C or -50°C | Enhances toughness at low temperature |
| Weldability | Meets standard requirements | Stricter, weldability tests often required | PSL2 demands higher weld performance |
| Dimensional Tolerance | Standard range | Stricter | PSL2 has tighter control on diameter and wall thickness |
| Defect Control / NDT | Standard inspection; UT/RT optional | Mandatory UT/RT/MPI | Ensures higher pipeline safety |
| Application Environment | General pipeline transportation | High-pressure, low-temperature, corrosive pipelines | PSL2 is preferred for projects with high safety requirements |
| Cost | Relatively lower | Slightly higher | Due to stricter inspection and manufacturing requirements |
| API 5L Grade | Minimum Yield Strength (MPa) | Typical Applications in the Americas |
| Grade B | ≥ 245 MPa | Low-pressure natural gas pipelines in North America; small-diameter oil gathering pipelines in Central America |
| X42 / X46 | ≥ 290 / 317 MPa | Agricultural irrigation pipelines in the U.S. Midwest; urban energy distribution networks in South America |
| X52 (Main Grade) | ≥ 359 MPa | Onshore oil & gas gathering lines in Texas shale fields; Brazil domestic pipeline networks; cross-border natural gas pipelines (e.g., Panama region) |
| X60 / X65 | ≥ 414 / 448 MPa | Canadian oil sands transportation pipelines; Gulf of Mexico medium- to high-pressure offshore pipeline systems |
| X70 / X80 | ≥ 483 / 552 MPa | Long-distance high-pressure transmission pipelines in the U.S.; deepwater offshore oil & gas projects in Brazil |
Raw Material Inspection – Choose and inspect the good quality steel billets or coils.
Forming – Roll or pierce into pipe form (Seamless / ERW / SAW).
Welding –In-pipe joints are made by electric resistance welding or submerged arc welding.
Heat Treatment – Enhance strength and toughness by precise heating.
Sizing & Straightening – Modify the diameter of the tube and confirm the size is correct.
Non-Destructive Testing (NDT) – Inspect for inward and surface flaws.
Hydrostatic Test – Test each pipe for strength and leaks.
Surface Coating – Apply corrosion protection layer (black varnish, FBE, 3LPE, etc.).
Marking & Inspection – Mark the specifications and do the final quality inspections.
Packaging & Delivery – Pack, stack, and deliver with Mill Test Certificates.
1.Global Steel Export Experience
With over 15 years of steel export experience, Royal Steel Group provides reliable steel solutions for construction, infrastructure, energy, and industrial projects across North, Central, and South America.
2.Strong Supply Chain & Competitive Pricing
Partnering with leading steel mills, we ensure stable supply capacity, consistent quality, competitive prices, and on-time delivery for projects of all sizes.
3.Complete Steel Product Range
We supply steel pipes, steel coils, steel plates, H-beams, sheet piles, steel gratings, and steel structures according to international standards including ASTM, API, EN, and JIS.
4.Professional Export Service
Royal Group offers complete export support, including MTC, SGS inspection, customized packaging, shipping solutions, and documentation assistance for smooth international transactions.
5.Americas Market Expertise
With experience serving customers in Mexico, Guatemala, Panama, Costa Rica, Ecuador, and other regions, we understand local requirements and provide efficient steel solutions.
6.Reliable Quality & Custom Solutions
Strict quality control, flexible customization, and professional technical support ensure every project receives durable and cost-effective steel products.
Professional Packaging for API 5L Steel Pipes
Royal Steel Group uses reliable export packaging methods to protect API 5L steel pipes during long-distance transportation. Packaging solutions are designed according to pipe size, wall thickness, coating requirements, and shipping conditions to ensure safe delivery without damage.
Pipe Bundling: API 5L seamless and welded pipes are bundled with high-strength steel straps for easy handling and loading.
End Protection: Plastic caps or pipe protectors are applied to prevent damage to pipe ends and threads during transportation.
Waterproof Protection: Pipes are wrapped with waterproof materials to reduce the risk of moisture, rust, and surface damage.
Coated Pipe Protection: For 3PE, FBE, or galvanized pipes, additional protective layers are used to maintain coating quality.
Flexible Shipping Solutions Worldwide
With extensive steel export experience, Royal Group provides efficient logistics solutions for API 5L pipeline pipes to global markets, including:
1.Container shipment for small and medium diameter pipes
2.Bulk vessel shipment for large quantities and large diameter pipes
3.Breakbulk transportation for oversized pipeline projects
4.Customized loading plans to maximize container utilization
Q1: What is API 5L steel pipe used for?
A: API 5L steel pipe is mainly used for the transportation of oil, natural gas, water, and other fluids. It is widely applied in oil & gas pipelines, petrochemical projects, energy facilities, and industrial pipeline systems.
Q2: What grades of API 5L pipes are available?
A: Common API 5L grades include Grade B, X42, X52, X60, X65, and X70. Different grades are selected based on pipeline pressure, strength requirements, and project conditions.
Q3: What is the difference between seamless and welded API 5L pipes?
A: Seamless API 5L pipes offer higher pressure resistance and are suitable for demanding applications, while welded API 5L pipes provide cost-effective solutions for large-diameter pipelines and general transmission projects.
Q4: What sizes and coatings are available for API 5L pipes?
A: API 5L pipes are available in various diameters, wall thicknesses, and lengths. Surface coatings such as 3PE, FBE, epoxy coating, and galvanized coating can be provided to improve corrosion resistance and service life.
Q5: Why choose Royal Group as an API 5L pipe supplier?
A: Royal Group supplies high-quality API 5L steel pipes with strict quality control, competitive pricing, customized production, professional export packaging, and global delivery services for oil, gas, and infrastructure projects.
Contact Details
Address
Kangsheng development industry zone,
Wuqing district, Tianjin city, China.
Phone
Hours
Monday-Sunday: 24-hour Service
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