AS1074 pipe, also known as AS 1074 steel pipe, is a crucial component in various industrial applications. This Australian Standard specification outlines the requirements for steel tubes used in medium-pressure applications, particularly in the conveyance of fluids.
Steel Grades
AS1074 pipe is typically manufactured using carbon steel, which provides excellent strength and durability. The standard specifies two main grades:
- AS1074 Grade 250: AS1074 Grade 250, with a minimum yield strength of 250 MPa, is the go-to option for general-purpose scenarios. Think of it as the workhorse for everyday applications where moderate strength is sufficient. For instance, in standard pressure conveying systems within small factories or residential water supply pipes in buildings, Grade 250 delivers the necessary performance while maintaining cost-effectiveness.
- AS1074 Grade 350: AS1074 Grade 350 steps up the strength ante with a minimum yield strength of 350 MPa. This grade is the superhero for challenging situations demanding superior structural integrity. When dealing with high - pressure fluid transportation pipelines, especially in the oil and gas industry's long - distance high - pressure segments, or constructing the structural framework of massive industrial equipment where complex mechanical loads are at play, Grade 350's enhanced strength capabilities shine, ensuring the safety and reliability of the entire system.
The choice between these grades depends on the specific requirements of the application. Pressure ratings, temperature conditions, and mechanical stress levels are the critical clues to find the right fit. For standard pressure systems, Grade 250 is usually the perfect match. But when the pressure is cranked up, or additional strength is a must-have, like in high-pressure systems, Grade 350 takes the spotlight.
Another striking feature of the AS1074 pipe is its versatility in supply conditions. It can be provided in as-welded, normalized, or stress-relieved states. This is akin to having a Swiss Army knife in your industrial toolkit. In the as-welded state, it's ideal for on-site welding assembly projects, ensuring smooth welding processes and high-quality joints. When in the normalized state, the pipe boasts uniform microstructure and stable mechanical properties, making it a great fit for applications requiring precise dimensions and good machinability. And the stress-relieved state is a lifesaver in environments sensitive to residual stresses, such as manufacturing high-precision mechanical components, minimizing deformation risks, and ensuring top-notch product quality.
Chemical Composition
The chemical composition of AS1074 pipe plays a crucial role in determining its mechanical properties and overall performance. While the exact composition may vary slightly depending on the manufacturer and specific grade, the general chemical composition for AS1074 pipe typically includes:
- Carbon (C): 0.20% max
- Manganese (Mn): 0.60 - 1.40%
- Phosphorus (P): 0.040% max
- Sulfur (S): 0.040% max
- Silicon (Si): 0.10 - 0.35%
The controlled carbon content ensures good weldability, while the manganese contributes to strength and toughness. The limitations on phosphorus and sulfur help minimize the risk of brittleness and improve overall material quality.
It's important to note that manufacturers may make minor adjustments to this composition to optimize specific properties or to meet particular customer requirements. However, these adjustments must still fall within the allowable ranges specified by the AS1074 standard.
Dimensions and Weights
AS1074 pipe is available in a wide range of dimensions to suit various application needs. The standard specifies both nominal bore sizes and outside diameters, along with corresponding wall thicknesses. Some common dimensional ranges include:
- Nominal Bore Sizes: 15mm to 150mm
- Outside Diameters: 21.3mm to 165.1mm
- Wall Thicknesses: Varying from 2.0mm to 5.4mm, depending on the pipe size
The relationship between nominal bore size, outside diameter, and wall thickness is carefully specified to ensure consistent performance across different pipe sizes. For instance, a nominal bore size of 50mm typically corresponds to an outside diameter of 60.3mm, with wall thickness options ranging from 2.9mm to 4.0mm.
Weights of AS1074 pipe are directly related to their dimensions and are usually expressed in kilograms per meter (kg/m). For example, a 50mm nominal bore pipe with a 2.9mm wall thickness would weigh approximately 4.14 kg/m.
It's crucial to select the appropriate dimensions and weights based on the specific requirements of your application, considering factors such as operating pressure, fluid characteristics, and installation constraints.
About Longma Group
AS1074 steel pipe has established itself as a versatile and reliable solution, particularly for medium-pressure fluid conveyance applications across diverse industries. The pipe's reliability stems from its meticulously defined grades, which are engineered to meet specific strength and durability requirements. Each grade undergoes rigorous quality control to ensure consistent performance. The chemical composition of the pipe is carefully controlled, with precise levels of carbon, manganese, and other alloying elements to achieve the desired mechanical properties. This attention to detail in composition ensures that the pipe can withstand varying pressures and temperatures without compromising on safety or efficiency. In terms of dimensions, AS1074 steel pipe adheres to standardized specifications, making it compatible with a wide range of fittings and connections. This standardization simplifies the design and installation processes for engineers and contractors, as they can rely on the pipe's dimensions to fit seamlessly into their projects.
Longma Group Limited (LONGMA GROUP) has emerged as one of China's leading manufacturers of ERW/LSAW steel pipes since its establishment in 2003. With a significant annual output exceeding 1,000,000 tons by the end of 2023, the company has solidified its position in the market. Their AS1074 pipe product is a standout offering, featuring an outer diameter that ranges from 1/4" to 6", catering to a broad spectrum of project requirements. The thickness options of SCHSTD to SCHXXS provide flexibility in choosing the right pipe for different pressure and structural needs.
With a substantial stock quantity of 10-50 tons and an annual production capacity of 50-100 tons for this specific product, Longma Group ensures that it can meet both immediate and long-term demands of its clients. For those seeking to learn more about the pipe or to discuss potential orders, the company encourages inquiries to info@longma-group.com. Their experienced team is ready to provide detailed information, technical support, and tailored solutions to ensure that clients can harness the full potential of AS1074 steel pipe in their operations.
References
- Standards Australia. (2019). AS 1074:2019 Steel tubes and tubulars for ordinary service.
- World Steel Association. (2021). Steel Grades and Properties Handbook.
- Pipe Logix. (2022). Comprehensive Guide to Steel Pipe Dimensions and Weights.
