ALLLAND Boiler Steel Pipe Supply
Welcome to ALLLAND. As an API 5L X60 certified steel pipe manufacturer, we strictly adhere to standards in producing API 5L X60 PIPE. We guarantee dimensional accuracy, mechanical properties, and chemical composition. Our production processes are standardized, with all products undergoing hydrostatic testing. We support third-party testing and sampling inspections. Manufactured from high-quality steel and compliant with international standards, API 5L X60 PIPE is specifically suited for long-distance, high-pressure transportation requirements in the oil and gas industry.
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Alllandsteel is a steel pipe manufacturer based in China with 25 years of experience.
The facility spans 22,000 square meters, represents a RMB 700 million investment, and operates four production lines (JCOE, ERW, SMLS, SSAW) alongside five coating lines.
With an annual production capacity of 250,000 tons, the factory covers specifications ranging from Ø406 to Ø1524 and holds multiple international certifications (API/ASTM/EN/ISO/JIS). Focused on steel pipes, creating value for you!
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API 5L X60 is a high-strength pipeline steel specified in the American Petroleum Institute (API) 5L standard, primarily used for long-distance transportation of petroleum, natural gas, and refined oil products. X60 is a pipeline grade within the API 5L standard characterized by high yield strength and corrosion resistance, making it suitable for long-distance, large-diameter pipelines. “X”: Represents pipeline pipe “60”: Represents a minimum yield strength of 60,000 psi (pounds per square inch) Product grades: PSL1 (Basic Grade), PSL2 (High Quality Grade, with mandatory impact toughness).
O.D.:
21.3 mm to 1016 mm; LSAW and SSAW up to 406 mm to 2500 mm.
W.T.:
SCH10, SCH20, SCH30, SCH40, SCH60, SCH80, SCH100, SCH120, SCH140, and SCH160.
Length:
Between 10 m and 12 m, custom lengths available.
Process:
Seamless steel pipe, ERW resistance welded pipe, LSAW , and SSAW spipe
Operating Temperature:
Stable operation from -30°C to 400°C.
Pipe Pressure:
8 MPa to 12 MPa, up to 15 MPa maximum
Tube Ends:
Plain End and Beveled End
API 5L X60 is available in various diameters, sizes, and specifications. The following table lists common imperial sizes and corresponding nominal outside diameters for API 5L X60 PIPE under the API 5L standard:
| Nominal size (inches) | Nominal outer diameter OD (mm) | Common wall thickness range WT (mm) |
| 1/2″ | 21.3 | 2.0-5.0 |
| 3/4″ | 26.7 | 2.0-5.5 |
| 1″ | 33.4 | 2.5-6.0 |
| 2″ | 60.3 | 3.0-8.0 |
| 3″ | 88.9 | 3.5-10.0 |
| 4″ | 114.3 | 3.2-13.0 |
| 6″ | 168.3 | 3.5-16.0 |
| 8″ | 219.1 | 4.0-20.0 |
| 10″ | 273.1 | 4.5-22.0 |
| 12″ | 323.9 | 5.0-25.0 |
| 16″ | 406.4 | 6.0-30.0 |
| 20″ | 508 | 6.0-35.0 |
| 24″ | 609.6 | 6.5-40.0 |
| 30″ | 762 | 7.0-45.0 |
| 36″ | 914.4 | 8.0-50.0 |
| 42″ | 1067 | 8.0-60.0 |
| 48″ | 1219 | 9.0-65.0 |
Note : Wall thickness and length can be customized according to project requirements.
Precise control of chemical elements is crucial for ensuring steel performance and on-site welding quality. Its main chemical components include:
| Element | Value(%) | Functions and effects |
| Carbon (C) | ≤ 0.28% | The core component improves weldability, reduces heat-affected zone hardness, and decreases cold cracking sensitivity. |
| Manganese (Mn) | ≤1.60 | Solid solution strengthening improves strength, compensating for the loss from low carbon content. |
| Phosphorus (P) | ≤0.030 | Prevent cold brittleness and segregation. |
| Sulfur (S) | ≤0.030 | Prevents hot brittleness and improves resistance to hydrogen sulfide stress corrosion (SSC). |
| Silicon (Si) | ≤0.45 | Steelmaking deoxidizer, with appropriate solid solution strengthening. |
| Microalloying elements | Nb≤0.05, V≤0.08, Ti≤0.04 | Grain refinement and precipitation strengthening improve both toughness and strength. |
| Carbon Equivalent (CEV) | ≤0.43 (depending on wall thickness) | A comprehensive indicator for assessing weldability is that the lower the CEV (Carbon Equivalent Value), the lower the welding preheating requirements and the lower the risk of cold cracking. |
Note: If the on-site welding conditions are harsh (such as winter construction or high restraint), special attention should be paid to the limits of carbon equivalent (CEV) and weld crack susceptibility index (Pcm), and stricter internal control requirements may be proposed if necessary.
| Performance parameters | Unit | PSL1 required value | PSL2 required value | Engineering significance |
| Yield strength | MPa | 415 | 415 | The core calculation basis for pipeline design pressure determines the pipe material’s ability to resist plastic deformation. |
| Tensile strength | MPa | 520 | 520 | Ensure the safety of pipelines under overpressure or accidental overload to prevent breakage. |
| The ratio of yield strength | – | No requirements | ≤0.93 | It reflects the material’s strain hardening capacity and safety margin. The lower the ratio, the greater the plasticity reserve. |
| Elongation after fracture | % | API calculation table | API calculation table | The ability to measure the uniform deformation of a material is crucial for pipe bending and on-site cold bending operations. |
Specifications range: outer diameter 21.3mm-660mm.
Advantages: Seamless construction, highest pressure resistance, suitable for small-diameter high-pressure applications, water injection lines, and casings.
Process: After the steel strip is formed, the weld seam is welded using high-frequency current (without filler metal).
Specifications range: outer diameter 114.3mm-660mm.
Advantages: High dimensional accuracy, cost-effective, suitable for gas pipeline networks and medium-pressure pipelines.
Process: Weld the steel plate (JCOE or UOE forming) inside and out (submerged arc welding).
Specifications range: outer diameter 406.4mm-1626mm.
Advantages: Excellent weld quality, capable of producing thick-walled pipes, making it the preferred choice for long-distance high-pressure transportation (natural gas, oil) and marine pipelines.
Process: Submerged arc welding after hot-rolled coil is spirally formed.
Specifications range: outer diameter 219.1mm-3000mm.
Advantages: Flexible specifications, economical cost, suitable for large-diameter water transportation or low-pressure gas transmission pipelines.
| Comparison Item | API 5L X42 | API 5L X52 | API 5L X60 |
| Mechanical Properties | Lower yield strength among the three grades; suitable for lower pressure pipeline systems. | Higher yield strength than X42, suitable for medium pressure pipeline transportation. | Significantly higher yield strength; can withstand higher pressure or use thinner pipe walls under the same pressure, helping reduce steel consumption. |
| Manufacturing Process | Can be produced through conventional controlled rolling processes. | Also generally produced by controlled rolling processes. | Usually requires TMCP (Thermo-Mechanical Controlled Processing), which demands higher equipment capability and stricter process control. |
| Alloy Design | Mainly relies on C and Mn solid solution strengthening. | Begins to adopt microalloying design. | Typical combination of microalloying elements (Nb, V, Ti) with TMCP, improving performance through grain refinement and precipitation strengthening. |
| Typical Applications | Mainly used in low-pressure branch pipelines or urban gas pipeline networks. | Widely used in medium-pressure trunk pipelines and general oil & gas transmission systems. | Commonly used in high-pressure pipelines, large-diameter pipelines, offshore pipelines, and low-temperature environments requiring higher material performance. |
| Cost Level | Relatively low cost because it is essentially carbon–manganese steel. | Moderate cost as a transitional steel grade. | Higher cost due to microalloying design and TMCP manufacturing process. |
ALLLAND has passed international quality management system certification and uses advanced production equipment and testing methods to ensure that every pipe meets API 5L standards and has long-term stable performance.
ALLLAND Suggests the following:
Transportation and handling: Nylon slings must be used; direct binding with steel wire ropes is strictly prohibited to avoid damage to the pipe body and bevel. Large-diameter pipes should be lifted using specialized lifting equipment with rubber pads.
Storage requirements: Pipes should be stacked on a flat, gravel-free surface, with wedges driven into both ends of the stack to prevent rolling. It is recommended to store them off the ground to avoid direct contact with soil.
Rust prevention measures: We have applied rust-preventive paint or weldable rust-preventive primer at the factory. If stored outdoors for extended periods, it is recommended to cover with a waterproof tarpaulin and inspect regularly.
Our sales team will assist you throughout every step from order placement to shipping, including export customs clearance, sea freight arrangements, and document preparation. You only need to provide your project requirements, and we will offer you complete supply chain services.
