ALLLAND Boiler Steel Pipe Supply
Welcome to ALLLAND Steel Pipe Manufacturing Company. In the Chinese market, as a professional pipeline steel pipe manufacturer, we have long been committed to the research, development, production, and sales of API 5L Grade B and other grades of steel pipes, providing high-quality products and solutions for domestic and international oil and gas transportation, urban pipeline networks, and industrial pipelines.
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 B is a steel pipe standard developed by the American Petroleum Institute (API) for the transportation of oil, gas, and other fluids. Pipeline systems that require high strength, durability, and corrosion resistance primarily use these pipes. API 5L Grade B is a pipeline grade within the API 5L standard, suitable for lower pressure pipelines. The oil and gas industry, water supply systems, and other industrial applications widely use API 5L Grade B.
In the Chinese market, Hebei Allland Steel Pipe Manufacturing Co., Ltd., as a professional manufacturer of pipeline steel pipes, has been dedicated to the R&D, production, and sales of API 5L Grade B and other grades of pipes for many years, providing high-quality products and solutions for domestic and international oil and gas transportation, urban pipelines, industrial pipelines, etc
O.D.:
SMLS 1/2″ – 24″ / ERW 1/2″ – 20″/ LSAW 16″ – 60″/ SSAW 20″ – 100″
W.T.:
SCH 10/ SCH 20/ SCH 40/ SCH 80/ SCH 160/ XS / XXS
Length:
6-12 m, available in fixed or multiple lengths; custom lengths per project requirements.
Process:
ERW/ LASW/ SSAW/ SMLS
Standards:
API 5L/ ISO 3183
Steel Grades:
Grade B PSL1/ Grade B PSL2
Tube Ends& Surface Treatment:
Square, Chamfered; Black Skin, Pickled, Painted/Oiled for Rust Prevention
Delivery Conditions:
Grade, Specification, Furnace Number, Standard
The mechanical properties of API 5L Grade B pipes make them highly suitable for the transportation of conventional oil, gas, and other liquids. Key performance indicators include:
Minimum Yield Strength: 42,000 psi (290 MPa). This is the core basis for the pipeline’s pressure design, ensuring that no permanent deformation occurs under normal working pressure.
Tensile Strength: 60,000–90,000 psi (414–620 MPa).
Impact Toughness: API 5L Grade B has impact energy requirements at various temperatures (such as Charpy impact tests), especially its performance in low-temperature environments.
API 5L Grade B pipe features an exceptionally balanced chemical composition, ensuring high toughness and corrosion resistance. Its primary chemical constituents include:
The material’s characteristics stem from its balanced chemical composition, and the main features include:
Excellent Weldability: As a carbon-manganese steel, Grade B has a low carbon equivalent (CE), usually below 0.35% (according to the IIW formula). This results in low cold crack sensitivity during welding and allows for relaxed preheating requirements, making it suitable for various arc welding processes (such as SMAW, GMAW), significantly reducing construction difficulty and cost.
Forming and Processing Performance: The material has good plasticity, making it easy to cold-bend, cut, and process the ends, suitable for complex site routing and installation.
Table 1: Below is the comparison table between API 5L Grade B and other common grades (such as X42, X46, X52, X60, etc.):
| Pipe Grade | Minimum Yield Strength (psi) | Tensile Strength (psi) | Tensile Strength (MPa) | Applicable Environment |
| API 5L Grade B | 42000 | 60,000–90,000 | 414–620 | Suitable for conventional pressure oil, gas, and water transportation. Widely used in low to medium-pressure pipeline systems, offering good cost-performance ratio. |
| API 5L X42 | 42000 | 60,000–75,000 | 414–517 | Suitable for lower pressure oil and gas transport pipelines, commonly used in oil and gas transport, offering moderate mechanical strength. |
| API 5L X46 | 46000 | 70,000–85,000 | 483–586 | Suitable for medium-pressure transport, especially for higher-demand oil and gas pipelines, providing higher tensile strength, ideal for deep-water and high-pressure environments. |
| API 5L X52 | 52000 | 70,000–85,000 | 483–586 | Used for higher pressure transport environments, particularly suitable for medium to high-pressure oil and gas transport, offering higher strength and corrosion resistance. |
| API 5L X56 | 56000 | 70,000–85,000 | 483–586 | Suitable for medium to high-pressure oil and gas transport, typically used for long-distance and high-pressure environments. |
| API 5L X60 | 60000 | 80,000–95,000 | 552–655 | Suitable for high-pressure environments, widely used in long-distance, high-pressure oil and gas pipelines, able to withstand higher operating pressure and harsher working conditions. |
| API 5L X70 | 70000 | 90,000–100,000 | 621–690 | Suitable for ultra-high pressure environments, commonly used in subsea pipelines, high-pressure oil and gas transport, with excellent tensile strength and durability. |
| API 5L X80 | 80000 | 100,000–110,000 | 689–758 | Used for deep-sea or high-pressure oil and gas transport, with extremely high tensile strength, suitable for the most extreme environmental applications. |
| API 5L X100 | 100000 | 120,000–130,000 | 827–896 | Suitable for ultra-high-pressure oil and gas pipelines, particularly in deep-sea or extreme environments, able to withstand the harshest conditions. |
Manufacturers offer API 5L Grade B pipes in two product specification levels:
PSL 1 (Standard Grade): Suitable for general transportation applications, fluid transport in normal environments. The manufacturing requirements are relatively simple, making it suitable for regular oil and gas pipeline construction.
PSL 2 (Higher Standard): PSL 2 requires higher performance standards, including stricter control of chemical composition and mechanical properties. This grade is suitable for pipes used in more severe environments, such as deep-sea pipelines and high-pressure transportation.
Selection Recommendations: For most low-pressure land pipelines, PSL1 Grade B is sufficient and cost-effective. If the pipeline crosses low-temperature areas (<0°C), densely populated areas, or if the owner has higher safety standards, PSL2 Grade B should be selected.
Oil and Gas Pipelines: API 5L Grade B is one of the most commonly used steel pipe grades in the oil and gas industry. It is used in low-pressure crude oil, natural gas, and produced water collection and transportation pipelines within oil and gas fields.
Urban Utilities: City gas distribution networks, water supply pipelines, many urban natural gas pipelines use API 5L Grade B steel pipes to provide stable flow and reliability.
Industrial Pipelines: Used for low-pressure steam, industrial water, compressed air, and process fluid transport within factories.
Structural Uses: Due to its cost advantages, people also use it for pipe piles, scaffolding, support structures, and other non-pressure or low-pressure applications.
Hebei Allland has provided large quantities of Grade B steel pipes for numerous domestic and international oil and gas fields, urban gas companies, and industrial parks. The products are widely used in gas transport, water transport, and structural support, receiving unanimous praise from customers.
API 5L Grade B represents a classic choice that has endured in the pipeline steel sector. While it may not be the highest strength material, it strikes the best balance between weldability, toughness, cost, and availability. Correctly understanding its PSL grading and selecting based on the actual project needs is key to ensuring the long-term safety, economy, and reliable operation of pipeline systems.
For a wide range of medium- and low-pressure transport and infrastructure projects worldwide, Grade B will continue to be an indispensable “mainstay.”As one of the key steel pipe manufacturers in China, Hebei Allland will continue to provide reliable, economical, and efficient pipeline solutions for global medium and low-pressure transportation and infrastructure projects, helping with energy transportation and urban infrastructure development.
