Welcome to ALLLAND Steel Pipe Co., Ltd.
Welcome to ALLLAND Steel Pipe Co., Ltd.
ALLLAND Steel Pipe Supply
Welcome to ALLLAND Steel Pipe Manufacturing.
API 5L Grade A Steel Pipe is a carbon steel line pipe manufactured to API 5L requirements for the transportation of oil, natural gas, water, and other fluids. As a basic-strength line pipe grade, it offers reliable mechanical performance and good weldability for general pipeline and infrastructure applications. Available in seamless, ERW/HFW, LSAW, and SSAW forms, API 5L Grade A pipe can be supplied in a range of sizes, wall thicknesses, lengths, and anti-corrosion coating options to meet different project requirements.
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 Grade A is a lower-strength steel grade within the American Petroleum Institute (API) 5L standard for line pipe, primarily used in pipeline systems for the transportation of oil, natural gas, water, and other fluids.
It offers reliable mechanical performance and is suitable for general pipeline applications requiring a basic strength grade.
O.D.:
21.3–3048 mm
W.T.:
1.5–60 mm
Standard:
API 5L
Manufacturing Method:
Seamless、ERW/HFW、LSAW、SSAW
Length:
6–18 m, available in fixed or multiple lengths; custom lengths per project requirements.
Product Specification Level:
Coating Options:
FBE/ 3LPE / 3PE/ 3PP/ Liquid Epoxy/ Internal Epoxy Lining/ Cement Mortar Lining
Delivery Conditions:
Grade, Specification, Furnace Number, Standard
| Pipe Type | Outside Diameter | Wall Thickness | Length |
| Seamless Pipe | 1/2″ – 24″ | Customized | 5 – 12 m / Customized |
| ERW / HFW Pipe | 1/2″ – 24″ | Customized | 5 – 12 m / Customized |
| LSAW Pipe | 16″ – 60″ | Customized | 6 – 12 m / Customized |
| SSAW Pipe | 8″ – 120″ | Customized | 6 – 18 m / Customized |
Note: Available outside diameter, wall thickness and pipe length may vary depending on the manufacturing process, API 5L specification requirements and project requirements. Customized dimensions are available upon request.
API 5L Grade A Steel Pipe is available in different outside diameters, wall thicknesses, and lengths depending on the manufacturing process and project requirements.
Grade A is a material grade, while the actual pipe dimensions are specified according to the applicable pipe size, wall thickness, and purchasing specification.
| Nominal Pipe Size (NPS) | Outside Diameter (OD) | OD | Typical Wall Thickness | Reference Weight |
| 1/2″ | 0.840″ | 21.3 mm | 2.77 mm | 1.27 kg/m |
| 3/4″ | 1.050″ | 26.7 mm | 2.87 mm | 1.69 kg/m |
| 1″ | 1.315″ | 33.4 mm | 3.38 mm | 2.50 kg/m |
| 1-1/4″ | 1.660″ | 42.2 mm | 3.56 mm | 3.39 kg/m |
| 1-1/2″ | 1.900″ | 48.3 mm | 3.68 mm | 4.05 kg/m |
| 2″ | 2.375″ | 60.3 mm | 3.91 mm | 5.44 kg/m |
| 2-1/2″ | 2.875″ | 73.0 mm | 5.16 mm | 8.62 kg/m |
| 3″ | 3.500″ | 88.9 mm | 5.49 mm | 11.29 kg/m |
| 4″ | 4.500″ | 114.3 mm | 6.02 mm | 16.07 kg/m |
| 5″ | 5.563″ | 141.3 mm | 6.55 mm | 21.77 kg/m |
| 6″ | 6.625″ | 168.3 mm | 7.11 mm | 28.26 kg/m |
| 8″ | 8.625″ | 219.1 mm | 8.18 mm | 42.55 kg/m |
| 10″ | 10.750″ | 273.1 mm | 9.27 mm | 60.29 kg/m |
| 12″ | 12.750″ | 323.9 mm | 9.53 mm | 73.84 kg/m |
| 14″ | 14.000″ | 355.6 mm | 9.53 mm | 81.33 kg/m |
| 16″ | 16.000″ | 406.4 mm | 9.53 mm | 93.27 kg/m |
| 18″ | 18.000″ | 457.2 mm | 9.53 mm | 105.16 kg/m |
| 20″ | 20.000″ | 508.0 mm | 9.53 mm | 117.05 kg/m |
| 22″ | 22.000″ | 558.8 mm | 9.53 mm | 128.94 kg/m |
| 24″ | 24.000″ | 609.6 mm | 9.53 mm | 140.83 kg/m |
Note: The wall thicknesses and unit weights listed above are reference values for common line pipe dimensions. API 5L Grade A pipes can be ordered with different wall thicknesses according to the applicable specification, manufacturing process, design pressure, and project requirements. Actual dimensions should be confirmed in the purchase order.
API 5L Grade A is a carbon steel line pipe grade with controlled chemical composition requirements designed to provide suitable strength, weldability, and performance for general pipeline applications.
According to the API 5L PSL1 chemical requirements, the principal chemical composition limits for API 5L Grade A are shown below.
| Element | Maximum Content (%) |
| Carbon (C) | 0.22 |
| Manganese (Mn) | 0.90 |
| Phosphorus (P) | 0.030 |
| Sulfur (S) | 0.030 |
Note: The values above are based on API 5L PSL1 chemical requirements for Grade A. Actual chemical composition requirements may depend on the applicable edition of the standard, product specification level, manufacturing process, pipe dimensions, and project specifications.
API 5L Grade A is a basic-strength carbon steel line pipe grade designed for general pipeline and fluid transportation applications. Its mechanical properties provide suitable strength, weldability, and forming performance for the transportation of oil, natural gas, water, and other fluids.
For API 5L Grade A PSL1 pipe, the minimum tensile property requirements are shown below.
| Mechanical Property | Requirement |
| Pipe Grade | L210 or A |
| Minimum Yield Strength | 210 MPa (30,500 psi) |
| Minimum Tensile Strength | 335 MPa (48,600 psi) |
| Minimum Elongation | Determined according to the applicable API 5L formula |
| Weld Seam Tensile Strength | Minimum 335 MPa (48,600 psi) for applicable welded pipe |
The mechanical properties listed above are based on the API 5L PSL1 requirements for Grade A, also designated as L210 or A. Actual test requirements may depend on the applicable edition of API 5L, manufacturing process, pipe dimensions, and specific project or purchase order requirements. The final mechanical properties should be verified through the relevant Material Test Certificate (MTC).
| Property | API 5L Grade A | API 5L Grade B |
| ISO Steel Grade Designation | L210 | L245 |
| Minimum Yield Strength | 210 MPa | 245 MPa |
| Minimum Tensile Strength | 335 MPa | 415 MPa |
| Yield Strength | Lower | Higher |
| Tensile Strength | Lower | Higher |
| Weldability | Good | Good |
| Typical Application | General pipeline applications | Oil, gas, water and industrial pipelines |
| Market Availability | Less common | More common |
Note: The mechanical property values above are based on API 5L PSL1 requirements. Actual requirements may vary depending on the applicable API 5L edition, product specification level, manufacturing process, and project specifications.
API 5L Grade A Pipe is primarily used for the transportation of oil, natural gas, water, and other fluids. As a basic-strength carbon steel line pipe grade, it is suitable for general pipeline applications where reliable mechanical performance and good weldability are required.
Depending on the pipe size, wall thickness, manufacturing process, and corrosion protection requirements, API 5L Grade A Steel Pipe can be used in a variety of energy, industrial, and infrastructure projects.
Water Transmission Pipelines
Industrial Fluid Transportation
Energy Infrastructure Projects
The appropriate manufacturing process can be selected according to pipe diameter, wall thickness, pressure requirements, and project specifications.
| Manufacturing Process | Typical Applications |
| Seamless Pipe | Small and medium-diameter pipelines and industrial fluid systems |
| ERW / HFW Pipe | General fluid transmission and industrial pipeline systems |
| LSAW Pipe | Large-diameter pipeline and infrastructure projects |
| SSAW Pipe | Large-diameter water transmission and general fluid transportation |
API 5L Grade A Steel Pipe is a carbon steel line pipe manufactured in accordance with API 5L requirements for the transportation of oil, natural gas, water, and other fluids. Grade A is a basic strength grade and is available in seamless and welded forms, depending on the required pipe size and project specifications.
The main difference between API 5L Grade A and API 5L Grade B is mechanical strength. API 5L Grade A has a lower minimum yield strength and tensile strength, while Grade B provides higher mechanical performance and is more commonly used in oil, gas, water, and industrial pipeline projects.
API 5L Grade A Pipe is used for the transportation of oil, natural gas, water, and other fluids. Typical applications include general pipeline systems, water transmission, industrial fluid transportation, energy infrastructure, and municipal pipeline projects.
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