Alloy Steel Tube
Alloy steel tubes are widely used in various industries due to their excellent strength, durability, and resistance to high temperatures and pressure. At Omsteel, we specialize in manufacturing and supplying high-quality alloy steel tubes that are designed to meet the diverse needs of our clients.
Our alloy steel tubes come in a wide range of sizes and grades, making them suitable for use in various applications. We offer both seamless and welded tubes, and we can customize them to meet your specific requirements.
One of the key features of our alloy steel tubes is their excellent resistance to corrosion and wear and tear, ensuring long-lasting performance in harsh environments. Our products are also highly ductile, making them easy to fabricate and install.
At Omsteel, we use the latest technology and manufacturing techniques to ensure that our products meet the highest quality standards. Our team of experts is always available to provide you with the necessary guidance and support to ensure that you get the right product for your specific application.
Types of Alloy Steel Tubes
Alloy steel pipes and tubes are widely used in various industries due to their excellent mechanical properties, corrosion resistance, and high-temperature strength. These pipes and tubes are made from a combination of different metals such as chromium, molybdenum, nickel, and vanadium. The addition of these metals enhances the strength, hardness, and toughness of the alloy steel pipes and tubes.
Alloy Steel Boiler Tubes
Alloy steel boiler tubes are widely used in power plants for generating steam. These tubes can withstand high pressure and temperature conditions without getting deformed or damaged. The most common grade used for making alloy steel boiler tubes is ASTM A213 T11.
Alloy Steel Square Tubes
Alloy steel square tubes are commonly used in construction applications where high strength is required. These tubes have a square cross-section which makes them suitable for use in structures where rectangular or circular sections cannot be used.
Welded Tubes
Welded tubes are made by welding two pieces of metal together to form a pipe. These tubes can be made from different materials such as stainless steel, carbon steel or alloy steel depending on the application requirements.
Seamless Tubes
Seamless tubes do not have any joints or seams on them which make them stronger than welded tubes. They are commonly used in applications where high pressure or temperature conditions exist.
Alloy Steel Round Tubes
Alloy steel round tubes have a circular cross-section which makes them suitable for use in applications where circular shapes are required such as in the manufacturing of shafts, cylinders, and bearings.
Alloy Steel Rectangular Tubes
Alloy steel rectangular tubes have a rectangular cross-section which makes them suitable for use in structures where square or circular sections cannot be used. These tubes are commonly used in construction applications where high strength is required.
Alloy Steel Hydraulic Tubes
Alloy steel hydraulic tubes are widely used in hydraulic systems due to their excellent corrosion resistance and high-temperature strength. These tubes can withstand high pressure and temperature conditions without getting deformed or damaged.
Alloy Steel Heat Exchanger Tubes
Alloy steel heat exchanger tubes are widely used in various industries such as chemical, petrochemical, and power generation for transferring heat from one fluid to another. These tubes can withstand high temperature and pressure conditions without getting deformed or damaged.
Alloy Steel Instrumentation Tubes
Alloy steel instrumentation tubes are commonly used in various industries such as oil and gas, petrochemicals, and chemical processing for measuring fluid flow rates, pressures, and temperatures. These tubes have excellent corrosion resistance properties which make them suitable for use in harsh environments.
Characteristics of Alloy Steel Tubes in Piping Systems
Corrosion Resistance
One of the most important characteristics of alloy steel tubes in piping systems is their corrosion resistance. Corrosion can cause significant damage to pipes, leading to leaks and other problems. Alloy steel tubes are made from materials that are highly resistant to corrosion, making them ideal for use in harsh environments where other materials may fail.
Strength and Durability
Alloy steel tubes are also known for their strength and durability. They are able to withstand high pressure and extreme temperatures without breaking or deforming. This makes them ideal for use in applications where reliability is critical, such as oil and gas pipelines, chemical processing plants, and power generation facilities.
Flexibility
Alloy steel tubes can be bent and shaped into a variety of configurations without losing their strength or integrity. This makes them ideal for use in complex piping systems that require precise routing around obstacles or through tight spaces.
Cost-Effective
Alloy steel tubes are also cost-effective compared to other materials such as stainless steel or titanium. This is because they are readily available and can be produced at a lower cost than some other metals.
Resistance to High Temperatures
Alloy steel tubes also have excellent resistance to high temperatures, making them ideal for use in high-temperature applications such as steam boilers or furnaces. They can withstand temperatures up to 600 degrees Celsius without losing their strength or structural integrity.
Ease of Welding
Alloy steel tubes are also easy to weld, which makes them an attractive option for fabricators who need to join multiple sections together. The welding process does not weaken the material or compromise its properties, ensuring that the finished product remains strong and reliable.
Low Maintenance Requirements
Alloy steel tubes require very little maintenance over their lifetime. Unlike some other materials that may corrode or degrade over time, alloy steel maintains its strength and durability for many years with minimal upkeep. This makes it an ideal choice for applications where maintenance is difficult or costly.
Alloy steel tubes specifications
| Specifications | ASTM A 335 ASME SA 335 |
|---|---|
| Dimensions | ASTM, ASME and API |
| Size | 1/8″NB TO 30″NB IN |
| Tubing Size | 1 / 2” OD up to 5” OD, customs diameters also available |
| Outer Diameter | 6-2500mm; WT:1-200mm |
| Schedule | SCH20, SCH30, SCH40, STD, SCH80, XS, SCH60, SCH80, SCH120, SCH140, SCH160, XXS |
| Grade | STM A335 Gr. P5, P9, P11, P12, P21, P22 & P91, ASTM A213 – T5, T9, T11, T12, T22, T91, ASTM A691 |
| Length | Within 13500mm |
| Type | Seamless / Fabricated |
| Form | Round, Hydraulic Etc |
| Length | Single Random, Double Random & Cut Length. |
| End | Plain End, Beveled End, Treaded |
ASME SA335 Alloy Tube Outside Diameter & Tolerance
| ASTM A450 | Hot rolled | Outside Diameter, mm | Tolerance, mm |
| OD≤101.6 | -0.5 | ||
| 101.6＜OD≤190.5 | -0.3333333333 | ||
| 190.5＜OD≤228.6 | -0.25 | ||
| Cold Drawn | Outside Diameter, mm | Tolerance, mm | |
| OD＜25.4 | ±0.10 | ||
| 25.4≤OD≤38.1 | ±0.15 | ||
| 38.1＜OD＜50.8 | ±0.20 | ||
| 50.8≤OD＜63.5 | ±0.25 | ||
| 63.5≤OD＜76.2 | ±0.30 | ||
| 76.2≤OD≤101.6 | ±0.38 | ||
| 101.6＜OD≤190.5 | -0.59375 | ||
| -0.3333333333 | - | ||
| - | ASTM A530 & ASTM A335 | Outside Diameter, inch | Tolerance, mm |
| 1/8≤OD≤1-1/2 | NPS | ±0.40 | |
| 1-1/2＜OD≤4 | ±0.79 | ||
| 4＜OD≤8 | -2.012658228 | ||
| 8＜OD≤12 | -3.012658228 | ||
| OD>12 | - | ||
ASME SA335 Alloy Steel tubes Wall thickness
| STM A450 | Hot rolled | Outside Diameter, mm | Tolerance, % |
| OD≤101.6, WT≤2.4 | +40/-0 | ||
| OD≤101.6, 2.4＜WT≤3.8 | +35/-0 | ||
| OD≤101.6, 3.8＜WT≤4.6 | +33/-0 | ||
| OD≤101.6, WT>4.6 | +28/-0 | ||
| OD>101.6, 2.4＜WT≤3.8 | +35/-0 | ||
| OD>101.6, 3.8＜WT≤4.6 | +33/-0 | ||
| OD>101.6, WT>4.6 | +28/-0 | ||
| Cold Drawn | Outside Diameter, mm | Tolerance, % | |
| OD≤38.1 | +20/-0 | ||
| +22/-0 | - | ||
| - | ASTM A530 | Outside Diameter, inch | Tolerance, % |
| 1/8≤OD≤2-1/2 | NPS | -1.6 | |
| 3≤OD≤18, WT/OD≤5% | -1.8 | ||
| 3≤OD≤18, WT/OD>5% | -1.2 | ||
| OD≥20, WT/OD≤5% | -1.8 | ||
| OD≥20, WT/OD>5% | - | ||
Alloy Steel Tubes Heat Treatment
| P5, P9, P11, and P22 | |||
|---|---|---|---|
| Grade | Heat Treatment Type | Normalizing Temperature Range F [C] | "Subcritical Annealing or Tempering Temperature Range F [C]" |
| P5 (b,c) | Full or Isothermal Anneal | - | - |
| - | Normalize and Temper | - | 1250 [675] |
| - | Subcritical Anneal (P5c only) | - | 1325 - 1375 [715 - 745] |
| P9 | Full or Isothermal Anneal | - | - |
| - | Normalize and Temper | - | 1250 [675] |
| P11 | Full or Isothermal Anneal | - | - |
| - | Normalize and Temper | - | 1200 [650] |
| P22 | Full or Isothermal Anneal | - | - |
| - | Normalize and Temper | - | 1250 [675] |
| P91 | Normalize and Temper | 1900-1975 [1040 - 1080] | 1350-1470 [730 - 800] |
| - | Quench and Temper | 1900-1975 [1040 - 1080] | 1350-1470 [730 - 800] |
Industrial Application of Alloy Tubes
Defence & Aerospace
Defence & Aerospace
We are one of the leading supplier, stockist, exporter and trader of wide range of industrial materials and sourcing globally to our customers.
Oil/Gas
Oil/Gas
We are one of the leading supplier, stockist, exporter and trader of wide range of industrial materials and sourcing globally to our customers.
Speciality Valves & Vacuum
Speciality Valves & Vacuum
We are one of the leading supplier, stockist, exporter and trader of wide range of industrial materials and sourcing globally to our customers.
Precision Components
Precision Components
We are one of the leading supplier, stockist, exporter and trader of wide range of industrial materials and sourcing globally to our customers.
