Seamless steel pipe is manufactured from solid, round steel billets that are pierced through the center with a mandrel. The billet is rolled and stretched through a hollow billet until it reaches a customer’s specification. Because of its uniform shape and ability to withstand pressure and heat, seamless steel pipe is an ideal material for many industries.
Midas Tubes provides a variety of seamless pipe to meet your application needs, offering a large selection of sizes and lengths.
Seamless pipes are crafted from solid cylindrical steel blocks known as billets. The manufacturing process starts by heating the billet and then piercing its center using a mandrel to create a hollow structure. Following this, the hollow billet undergoes rolling and stretching processes. These steps are meticulously carried out to achieve the desired dimensions—length, diameter, and wall thickness—as per customer specifications.
Certain types of seamless pipes undergo hardening during the manufacturing process, eliminating the need for additional heat treatment. However, some varieties may require heat treatment post-production. To determine whether heat treatment is necessary, it is essential to review the specifications of the specific seamless pipe type you are considering.
| Specification | Details |
|---|---|
| Outside Diameter | Φ18-820mm |
| Wall Thickness | 2.5-45mm |
| Standards | API5L, API5CT, ASTM-A106, ASTM-A53, ASTM A179, SY5037-2000, GB/T5711.1-1997 |
| Materials | API 5L GR.B ×42, API 5L GR.B×52, API 5L GR.B×60, API 5L GR.B×65, API 5L GR.B×70, ASTM A53 GR.A, ASTM A53 GR.B, ASTM A53 GR.C, EN S275, S275JR, S355JRH, Q234, Q345, 10#, 20#, 45#, 12CrMo, 15CrMO |
| Length | Random length or cut length (6m) |
| End | Plain end or bevel end |
| Surface Treatment | Black painting, Hot dip galvanized, Electro galvanized, Bare, Varnish coating/Anti-rust oil, Protective Coatings (Coal Tar Epoxy, Fusion Bond Epoxy, 3-layers PE) |
| Tests | Chemical Component Analysis, Mechanical Properties (Ultimate tensile strength, Yield strength, Elongation), Technical Properties (Flattening Test, Bending Test, Blow Test, Impact Test), Exterior Size Inspection, Hydrostatic Test, X-ray Test |
| Grade | 200 series: 201 high copper, 201 mid copper; 300 series: 304, 304L, 316, 316L; 400 series: 430 |
| Manufacture Technology | Hot rolled / Hot extrusion / Cold rolled / Cold drawn |
| Surface Finish | Polishing, Acid pickling |
| Application Range | Construction, decoration, industry, kitchen, medical equipment, etc. |
Seamless pipes are a versatile and reliable material option for various industries, offering numerous advantages based on the specific requirements of your application. They are especially well-suited for extreme environments, functioning effectively in both high and low temperatures. Due to their durability and adaptability, seamless steel pipes are frequently preferred in many demanding industrial settings.
Key Advantages of Seamless Steel Pipes:
High Pressure Resistance: Seamless pipes excel in withstanding high pressure, making them ideal for challenging conditions.
Consistent Shape: The absence of seams ensures a uniform structure, reducing potential weak points.
Exceptional Load Strength: Seamless steel pipes maintain their structural integrity and strength, even under heavy loads.
Seamless steel pipes are often the go-to solution for environments that involve high temperatures, high pressure, or exposure to corrosive substances. Their versatility makes them essential across various industries, such as:
Heat Exchangers: Efficient heat transfer in extreme conditions.
Chemical & Petrochemical Sectors: Handling of aggressive chemicals and gases.
Energy & Power Generation: Serving in high-stress energy applications.
Shipbuilding & Marine Industry: Vital for constructing durable, high-performance ships.
Oil & Gas Industry: Essential in transporting fluids and gases under harsh conditions.
High-Pressure Applications: Ensuring reliability in systems that deal with high stress and pressure.
Seamless steel pipes are indispensable in critical industrial sectors, providing durability and performance that other materials often cannot match.
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