Alloy Steel Pipe and Pipe Fittings
Alloy steel pipes and pipe fittings are widely used in various industries due to their excellent strength, durability, and resistance to high temperatures and pressure. Om Steel is a trusted manufacturer and supplier of high-quality alloy steel pipes and pipe fittings that are designed to meet the diverse needs of our clients.
Our alloy steel pipes and pipe fittings come in a wide range of sizes and grades, making them suitable for use in various applications. We offer seamless and welded pipes and a variety of fittings, including elbows, tees, reducers, and flanges.
One of the key features of our alloy steel pipes and pipe fittings 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 Om Steel, 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.
Low vs High Alloy Steel in Piping
Low Alloy Steels
Low alloy steels are those that contain less than 5% of other elements besides iron and carbon. These steels have a low carbon content, typically around 0.05% to 0.3%, which makes them more ductile and easier to weld than high carbon steels. Low alloy steels also have good machinability, formability, and toughness.
Another advantage of low alloy steels is their fine grain size, which improves their mechanical properties such as tensile strength, yield strength, and impact resistance. However, they may not be suitable for high temperature or pressure applications due to their lower strength compared to high alloy steels.
High Alloy Steels
High alloy steels contain more than 5% of other elements besides iron and carbon. These elements can include chromium, nickel, molybdenum, vanadium, tungsten, cobalt or other metals that enhance the properties of the steel such as corrosion resistance or hardness.
High alloy steels also have a higher carbon content than low alloy steels, typically around 0.3% to 1.5%, which makes them harder and more wear-resistant. However, this also makes them more brittle and difficult to weld compared to low alloy steels.
Types of Alloy Steel Pipe Fittings, Flanges, and Elbows
Alloy steel pipe fittings are widely used in various industries such as oil and gas, chemical, petrochemical, power generation, and many more. These fittings are designed to connect pipes or tubes together to ensure a smooth flow of fluids or gasses. There are different types of alloy steel pipe fittings available in the market that cater to specific needs.
Elbows
Elbows are one of the most commonly used alloy steel pipe fittings. They are used to change the direction of flow in a piping system. Elbows come in different angles such as 45 degrees, 90 degrees, and 180 degrees. The most commonly used elbow is the 90-degree elbow. It is also known as a “steel elbow” or “elbow fitting”. The seamless elbow is preferred over welded elbows because they provide better strength and leak-proof connections.
Reducing Elbows
Reducing elbows are used when there is a need to connect pipes or tubes with different diameters. These elbows have one end larger than the other end. Reducing elbows come in different angles such as 45 degrees and 90 degrees.
Tees
Tees are another type of alloy steel pipe fittings that are widely used in piping systems. They are mainly used to combine or split fluid flow into two directions at an angle of 90 degrees. Tees come in different types such as straight tees, reducing tees, lateral tees, etc.
Lateral Tee
A lateral tee is a type of tee that has an outlet at a 45-degree angle from the mainline direction. This type of tee allows for easy installation of instruments or valves on the lateral branch.
Flanges
Flanges are generally used to connect pipes or tubes with pumps, valves, and other equipment that require frequent maintenance or replacement. Flanges provide easy access for inspection or cleaning of the piping system. There are different types of flanges available such as slip-on flanges, weld-neck flanges, blind flanges, and socket-weld flanges.
Slip-On Flange
A slip-on flange is a type of flange that slips over the pipe or tube and is then welded in place. This type of flange is easy to install and remove.
Weld-Neck Flange
A weld-neck flange is a type of flange that has a long tapered neck that is butt-welded to the pipe or tube. This type of flange provides better strength and leak-proof connections.
Blind Flange
A blind flange is a type of flange that seals off the end of a pipe or tube. It is used when there is no need for frequent maintenance or inspection.
Socket-Weld Flange
A socket-weld flange is a type of flange that has a socket for welding onto the pipe or tube. This type of flange provides good flow characteristics and ease of installation.
Standard Specifications for Alloy Steel Pipe Fittings
ASTM A234 WPB is a standard specification for piping fittings of wrought carbon steel and alloy steel. These fittings are intended for moderate and high-temperature services, and they are commonly used in pressure piping systems.
ASTM A234 WPB is the most common material grade used in manufacturing pipe fittings. It has excellent weldability and is easy to fabricate. It also has good mechanical properties, including tensile strength, yield strength, and hardness.
ASME A234 WPB vs. ASTM A234 WPB
ASME (American Society of Mechanical Engineers) and ASTM (American Society for Testing and Materials) are two different organizations that develop standards for materials, products, systems, and services. ASME develops codes and standards for mechanical engineering practices while ASTM develops standards for materials.
However, many people use the terms ASME A234 WPB and ASTM A234 WPB interchangeably because they refer to the same standard specification.
ASTM A234 Gr WPB
ASTM A234 Gr WPB stands for Grade Wrought Pipe Butt-welding Fittings made from Carbon Steel. This grade is commonly used in piping systems that require low-temperature service or high-pressure applications.
ASTM A234 WP
ASTM A234 WP stands for Wrought Carbon Steel Alloy Steel Piping Fittings. This specification covers both seamless and welded carbon steel alloy steel pipe fittings of seamless construction.
A234WP91 Alloy Steel Pipe
A234WP91 is a type of alloy steel that contains chromium, molybdenum, vanadium, niobium, iron, carbon, manganese, phosphorus, sulfur, silicon as its major constituents. This material offers excellent resistance to corrosion at high temperatures making it suitable for use in power plants where high temperature steam conditions prevail.
ASTM A234 WP1 & ASTM A 234 WP11
ASTM A234 WP1 and ASTM A 234 WP11 are two different grades of alloy steel pipe fittings that are commonly used in high-temperature service applications. These fittings have excellent strength, toughness, and corrosion resistance properties.
ASTM A234 Fittings
ASTM A234 fittings are manufactured using the forging process. This process involves heating the material to a specific temperature, then shaping it into the desired shape using a hammer or press.
These fittings come in various shapes and sizes such as elbow, tee, reducer, cap, etc. They are also available in different types such as seamless and welded fittings.
ASTM A234 Socket Weld Fittings
Socket weld pipe fittings are commonly used in small diameter piping systems where welding is not practical due to space constraints. These fittings have a socket-like structure that allows them to be easily inserted into the pipe end.
A234 Gr WPB
A234 Gr WPB is a common grade of carbon steel pipe fittings that is widely used in pressure piping systems. It has good mechanical properties and is easy to fabricate.
A234 WP11 Pipe Fittings
A234 WP11 Pipe Fittings are made from low-alloy steel containing chromium and molybdenum. These materials offer excellent resistance to high-temperature environments making them suitable for use in power plants and other industrial applications.
High-Quality ASTM A234 WP11
High-quality ASTM A234 WP11 pipe fittings are essential for ensuring the safety and reliability of piping systems operating under high-pressure conditions. These fittings must meet stringent quality standards to ensure they can withstand extreme temperatures and pressures without failure.
ASTM A234 Grade WP11
ASTM A234 Grade WP11 refers to low-alloy steel pipe fittings made from chromium-molybdenum alloy steels. These materials offer excellent corrosion resistance at high temperatures making them ideal for use in power plants, refineries, chemical plants, and other industrial applications.
ASTM A234 Gr
ASTM A234 Gr refers to the grade of carbon steel or alloy steel used in manufacturing pipe fittings. This specification covers both seamless and welded carbon steel and alloy steel pipe fittings.
A234 WPB
A234 WPB is a common material grade used in manufacturing pipe fittings. It has excellent weldability and is easy to fabricate. It also has good mechanical properties, including tensile strength, yield strength, and hardness.
A234 Fittings
A234 fittings are commonly used in piping systems that require moderate to high-temperature service. These fittings come in various shapes and sizes such as elbow, tee, reducer, cap, etc. They are also available in different types such as seamless and welded fittings.
A234 WP11 Pipe Fittings Manufacturers
There are many manufacturers of A234 WP11 pipe fittings worldwide. However, it is essential to choose a reputable manufacturer that can provide high-quality products that meet your specific requirements.
Buttweld Fittings
Buttweld fittings are commonly used in piping systems where welding is practical due to space constraints. These fittings have a beveled end that allows them to be easily inserted into the pipe end for welding.
Socket Weld Pipe Fittings Sizes
Socket weld pipe fitting sizes range from 1/8″ to 4″. However, larger sizes may be available upon request from the manufacturer.
Alloy steel Pipe and Pipe Fittings Specifications
| Specifications | ASTM A387 / ASME SA387 |
|---|---|
| Thickness | 1mm-300mm |
| Width | 1000mm, 1219mm, 1500mm, 1800mm, 2000mm, 2500mm, 3000mm, 3500mm, 4050mm etc |
| Length | 2000mm, 2440mm, 3000mm, 5800mm, 6000mm, 12000mm, 15000mm etc |
| Surface | 2B, 2D, BA, NO.1, NO.4, NO.8, 8K, mirror, checkered, embossed, hair line, sand blast, Brush, etching Manufacturer and Supplier |
| Finish | Hot rolled plate (HR), Cold rolled sheet (CR) |
Alloy steel Plate ASTM grades
| Grades | C | Mn | P | S | SI | Cr | Mo |
|---|---|---|---|---|---|---|---|
| ASTM A387 Grade 5 | 0.15 max | 0.3 – 0.6 | 0.035 | 0.03 | 0.5 max | 4.00 – 6.00 | 0.45 – 0.65 |
| ASTM A387 Grade9 | 0.15 max | 0.30 – 0.6 | 0.03 | 0.03 | 1.0 max | 8.0 – 10.0 | 0.9 – 1.1 |
| ASTM A387 Grade 11 | 0.05 – 0.17 | 0.4 – 0.65 | 0.035 | 0.035 | 0.5 – 0.80 | 1.0 – 1.5 | 0.45 – 0.65 |
| ASTM A387 Grade 12 | 0.05 – 0.17 | 0.4 – 0.65 | 0.035 | 0.035 | 0.15 – 0.4 | 0.8 – 1.15 | 0.45 – 0.6 |
| ASTM A387 Grade 22 | 0.05 – 0.15 | 0.3 – 0.6 | 0.035 | 0.035 | 0.5 max | 2.0 – 2.5 | 0.9 – 1.1 |
Alloy Steel Pipes Outside Diameter & Tolerance
| Plate Surface finish | Gauge (in) | Width (max in) |
|---|---|---|
| 2B – Cold rolled, heat treated, pickled, skin passed Plate | 10–24 | 72* |
| 2D – Cold rolled, heat treated, pickled plate | 12–24 | 60 |
| BA Mexinox only | 18–28 | 48 |
| Polished plate (not brushed) | 11–24 | 60 |
| Temper rolled plate Mexinox only | 13–29 | 48 |
Alloy Steel Pipes Wall thickness
| Dimension thickness | ||
|---|---|---|
| 0.025" | 4" | 0.75" |
| 0.032" | 3.5" | 0.875" |
| 0.036" | 0.109" | 1" |
| 0.04" | 0.125" | 1.125" |
| 0.05" | 0.16" | 1.25" |
| 0.063" | 0.19" | 1.5" |
| 0.071" | 0.25" | 1.75" |
| 0.08" | 0.3125" | 2" |
| 0.09" | 0.375" | 2.5" |
| 0.095" | 0.5" | 3" |
| 0.1" | 0.625" | - |
Alloy Steel Pipe Fittings Dimension
| Size (in inches) | Size (in mm) |
|---|---|
| .125" | 3.18mm |
| .134" | 3.40mm |
| .156" | 3.96mm |
| .187" | 4.75mm |
| .250" | 6.35mm |
| .312" | 7.92mm |
| .375" | 9.53mm |
| .500" | 12.7mm |
| .600" | 15.9mm |
| .750" | 19.1mm |
| .875" | 22.2mm |
| 1" | 25.4mm |
| 1.125" | 28.6mm |
| 1.250" | 31.8mm |
| 1.500" | 38.1mm |
| 1.750" | 44.5mm |
| 2" | 50.8mm |
| 2.500" | 63.5mm |
| 3" | 76.2mm |
Types of SA312 Alloy Steel Pipe Fittings
| Thickness | Plate Weight per Unit Area | Density |
|---|---|---|
| 3/16 inches | 0.06000 lbs/in²42.184176 kg/m² | 0.315 lbs/in³8.72 g/cm³ |
| 1/4 inches | 0.08 lbs/in²56.245568 kg/m² | 0.315 lbs/in³8.72 g/cm³ |
| 3/8 inches | 0.121 lbs/in²85.0714216 kg/m² | 0.315 lbs/in³8.72 g/cm³ |
| 1/2 inches | 0.161 lbs/in²113.1942056 kg/m² | 0.315 lbs/in³8.72 g/cm³ |
| 5/8 inches | 0.196 lbs/in²137.8016416 kg/m² | 0.315 lbs/in³8.72 g/cm³ |
| 3/4 inches | 0.235 lbs/in²165.221356 kg/m² | 0.315 lbs/in³8.72 g/cm³ |
| 7/8 inches | 0.274 lbs/in²192.6410704 kg/m² | 0.315 lbs/in³8.72 g/cm³ |
| 1 inches | 0.313 lbs/in²220.0607848 kg/m² | 0.315 lbs/in³8.72 g/cm³ |
| 1 1/4 inches | 0.391 lbs/in²274.9002136 kg/m² | 0.315 lbs/in³8.72 g/cm³ |
| 1 1/2 inches | 0.47 lbs/in²330.442712 kg/m² | 0.315 lbs/in³8.72 g/cm³ |
| 1 3/4 inches | 0.549 lbs/in²385.9852104 kg/m² | 0.315 lbs/in³8.72 g/cm³ |
| 2 inches | 0.627 lbs/in²440.8246392 kg/m² | 0.315 lbs/in³8.72 g/cm³ |
| 2 1/4 inches | 0.705 lbs/in²495.664068 kg/m² | 0.315 lbs/in³8.72 g/cm³ |
| 2 1/2 inches | 0.784 lbs/in²551.2065664 kg/m² | 0.315 lbs/in³8.72 g/cm³ |
| 2 3/4 inches | 0.862 lbs/in²606.0459952 kg/m² | 0.315 lbs/in³8.72 g/cm³ |
| 3 inches | 0.941 lbs/in²661.5884936 kg/m² | 0.315 lbs/in³8.72 g/cm³ |
High Pressure Forged Chrome Moly/ Alloy Steel Pipe Fittings
| Thickness | Plate Weight per Unit Area | Density |
|---|---|---|
| 3/16 inches | 0.06000 lbs/in²42.184176 kg/m² | 0.315 lbs/in³8.72 g/cm³ |
| 1/4 inches | 0.08 lbs/in²56.245568 kg/m² | 0.315 lbs/in³8.72 g/cm³ |
| 3/8 inches | 0.121 lbs/in²85.0714216 kg/m² | 0.315 lbs/in³8.72 g/cm³ |
| 1/2 inches | 0.161 lbs/in²113.1942056 kg/m² | 0.315 lbs/in³8.72 g/cm³ |
| 5/8 inches | 0.196 lbs/in²137.8016416 kg/m² | 0.315 lbs/in³8.72 g/cm³ |
| 3/4 inches | 0.235 lbs/in²165.221356 kg/m² | 0.315 lbs/in³8.72 g/cm³ |
| 7/8 inches | 0.274 lbs/in²192.6410704 kg/m² | 0.315 lbs/in³8.72 g/cm³ |
| 1 inches | 0.313 lbs/in²220.0607848 kg/m² | 0.315 lbs/in³8.72 g/cm³ |
| 1 1/4 inches | 0.391 lbs/in²274.9002136 kg/m² | 0.315 lbs/in³8.72 g/cm³ |
| 1 1/2 inches | 0.47 lbs/in²330.442712 kg/m² | 0.315 lbs/in³8.72 g/cm³ |
| 1 3/4 inches | 0.549 lbs/in²385.9852104 kg/m² | 0.315 lbs/in³8.72 g/cm³ |
| 2 inches | 0.627 lbs/in²440.8246392 kg/m² | 0.315 lbs/in³8.72 g/cm³ |
| 2 1/4 inches | 0.705 lbs/in²495.664068 kg/m² | 0.315 lbs/in³8.72 g/cm³ |
| 2 1/2 inches | 0.784 lbs/in²551.2065664 kg/m² | 0.315 lbs/in³8.72 g/cm³ |
| 2 3/4 inches | 0.862 lbs/in²606.0459952 kg/m² | 0.315 lbs/in³8.72 g/cm³ |
| 3 inches | 0.941 lbs/in²661.5884936 kg/m² | 0.315 lbs/in³8.72 g/cm³ |
Chemical Composition Of Alloy steel Pipe
| Thickness | Plate Weight per Unit Area | Density |
|---|---|---|
| 3/16 inches | 0.06000 lbs/in²42.184176 kg/m² | 0.315 lbs/in³8.72 g/cm³ |
| 1/4 inches | 0.08 lbs/in²56.245568 kg/m² | 0.315 lbs/in³8.72 g/cm³ |
| 3/8 inches | 0.121 lbs/in²85.0714216 kg/m² | 0.315 lbs/in³8.72 g/cm³ |
| 1/2 inches | 0.161 lbs/in²113.1942056 kg/m² | 0.315 lbs/in³8.72 g/cm³ |
| 5/8 inches | 0.196 lbs/in²137.8016416 kg/m² | 0.315 lbs/in³8.72 g/cm³ |
| 3/4 inches | 0.235 lbs/in²165.221356 kg/m² | 0.315 lbs/in³8.72 g/cm³ |
| 7/8 inches | 0.274 lbs/in²192.6410704 kg/m² | 0.315 lbs/in³8.72 g/cm³ |
| 1 inches | 0.313 lbs/in²220.0607848 kg/m² | 0.315 lbs/in³8.72 g/cm³ |
| 1 1/4 inches | 0.391 lbs/in²274.9002136 kg/m² | 0.315 lbs/in³8.72 g/cm³ |
| 1 1/2 inches | 0.47 lbs/in²330.442712 kg/m² | 0.315 lbs/in³8.72 g/cm³ |
| 1 3/4 inches | 0.549 lbs/in²385.9852104 kg/m² | 0.315 lbs/in³8.72 g/cm³ |
| 2 inches | 0.627 lbs/in²440.8246392 kg/m² | 0.315 lbs/in³8.72 g/cm³ |
| 2 1/4 inches | 0.705 lbs/in²495.664068 kg/m² | 0.315 lbs/in³8.72 g/cm³ |
| 2 1/2 inches | 0.784 lbs/in²551.2065664 kg/m² | 0.315 lbs/in³8.72 g/cm³ |
| 2 3/4 inches | 0.862 lbs/in²606.0459952 kg/m² | 0.315 lbs/in³8.72 g/cm³ |
| 3 inches | 0.941 lbs/in²661.5884936 kg/m² | 0.315 lbs/in³8.72 g/cm³ |
Mechanical Properties of Alloy steel pipe
| Thickness | Plate Weight per Unit Area | Density |
|---|---|---|
| 3/16 inches | 0.06000 lbs/in²42.184176 kg/m² | 0.315 lbs/in³8.72 g/cm³ |
| 1/4 inches | 0.08 lbs/in²56.245568 kg/m² | 0.315 lbs/in³8.72 g/cm³ |
| 3/8 inches | 0.121 lbs/in²85.0714216 kg/m² | 0.315 lbs/in³8.72 g/cm³ |
| 1/2 inches | 0.161 lbs/in²113.1942056 kg/m² | 0.315 lbs/in³8.72 g/cm³ |
| 5/8 inches | 0.196 lbs/in²137.8016416 kg/m² | 0.315 lbs/in³8.72 g/cm³ |
| 3/4 inches | 0.235 lbs/in²165.221356 kg/m² | 0.315 lbs/in³8.72 g/cm³ |
| 7/8 inches | 0.274 lbs/in²192.6410704 kg/m² | 0.315 lbs/in³8.72 g/cm³ |
| 1 inches | 0.313 lbs/in²220.0607848 kg/m² | 0.315 lbs/in³8.72 g/cm³ |
| 1 1/4 inches | 0.391 lbs/in²274.9002136 kg/m² | 0.315 lbs/in³8.72 g/cm³ |
| 1 1/2 inches | 0.47 lbs/in²330.442712 kg/m² | 0.315 lbs/in³8.72 g/cm³ |
| 1 3/4 inches | 0.549 lbs/in²385.9852104 kg/m² | 0.315 lbs/in³8.72 g/cm³ |
| 2 inches | 0.627 lbs/in²440.8246392 kg/m² | 0.315 lbs/in³8.72 g/cm³ |
| 2 1/4 inches | 0.705 lbs/in²495.664068 kg/m² | 0.315 lbs/in³8.72 g/cm³ |
| 2 1/2 inches | 0.784 lbs/in²551.2065664 kg/m² | 0.315 lbs/in³8.72 g/cm³ |
| 2 3/4 inches | 0.862 lbs/in²606.0459952 kg/m² | 0.315 lbs/in³8.72 g/cm³ |
| 3 inches | 0.941 lbs/in²661.5884936 kg/m² | 0.315 lbs/in³8.72 g/cm³ |
Industrial Application of Alloy Steel Pipes and Pipe Fittings
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.
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