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Prime Steel stands as a leading force in the manufacturing and supply of premium stainless steel 304 butt weld fittings. As a company committed to excellence, we take pride in delivering top-tier products that embody durability, precision, and the unparalleled corrosion resistance inherent in stainless steel 304. Our stainless steel 304 butt weld fittings are meticulously crafted, bearing testimony to our unwavering commitment to quality. Renowned for its versatility, stainless steel 304 is an ideal choice for a myriad of industrial applications.
Type: Buttweld Pipe Fittings
Material: Stainless Steel
ASTM: A403/SA403
Grade: 304/304L/304h
UNS: S30400/S30403/S30409
WERKSTOFF: 1.4301/1.4306/1.4948
ASTM A403 WP304 / ASME SA403 WP304
Seamless Fittings: 1/2" - 24"
Welded Fittings: 4" - 72"
ASME/ ANSI B16.9 | ASME B16.28 | MSS-SP-43 | BS1560 | BS4504 | BS10
Seamless, Welded & Fabricated / Elbow, Tee, Reducer, Stub End, Cross, Cap
5s, 10s, 40s, 80s, 10, 20, 40, STD, 60, 80, XS, 100, 120, 140, 160, Sch XXS
oil and gas, petrochemicals, power generation, marine and food & beverage process lines, and water treatment
Stainless Steel 304, 304L, and 304H are grades of stainless steel that are commonly used in various industrial applications due to their excellent corrosion resistance, formability, and versatility. When it comes to pipe fittings, they are components used to connect, control, and change the direction of the flow in a piping system. Stainless Steel 304 / 304L / 304H Pipe Fittings refer to fittings made from these specific grades of stainless steel.
Pipe fittings made from these stainless steel grades can include various types such as elbows, tees, reducers, couplings, and flanges. These fittings are used to join sections of pipes or tubes, adapt to different sizes or shapes, and control or redirect the flow of fluids. They are widely used in industries such as chemical processing, oil and gas, food processing, pharmaceuticals, and more.
When selecting pipe fittings, it's important to consider the specific requirements of the application, such as temperature, pressure, and corrosion resistance, to ensure the chosen fittings are suitable for the intended use.
Stainless Steel 304: This is the most common grade of stainless steel and is widely used in various applications. It contains 18% chromium and 8% nickel, offering good corrosion resistance and formability. It is suitable for a wide range of environments and temperatures.
Stainless Steel 304L: This is a low-carbon variation of 304, which minimizes the carbide precipitation during welding. This helps to maintain corrosion resistance in the heat-affected zones around the weld. It is often used in applications where welding is required.
Stainless Steel 304H: This grade has a higher carbon content than 304, making it suitable for high-temperature applications. The increased carbon content provides improved high-temperature strength and creep resistance. It is often used in elevated temperature environments.
Check ANSI B16.28 / ASME B16.9 Buttweld Pipe Fittings Dimensions Download
| Grade | UNS No | Old British | Euronorm | Swedish SS | Japanese JIS | ||
|---|---|---|---|---|---|---|---|
| BS | En | No | Name | ||||
| 304 | S30400 | 304S31 | 58E | 1.4301 | X5CrNi18-10 | 2332 | SUS 304 |
| 304L | S30403 | 304S11 | - | 1.4306 | X2CrNi19-11 | 2352 | SUS 304L |
| 304H | S30409 | 304S51 | - | 1.4948 | X6CrNi18-11 | - | - |
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | |
|---|---|---|---|---|---|---|---|---|---|---|
| 304 | min. max. | - 0.08 | - 2.0 | - 0.75 | - 0.045 | - 0.030 | 18.0 20.0 | - | 8.0 10.5 | - 0.10 |
| 304L | min. max. | - 0.030 | - 2.0 | - 0.75 | - 0.045 | - 0.030 | 18.0 20.0 | - | 8.0 12.0 | - 0.10 |
| 304H | min. max. | 0.04 0.10 | - 2.0 | - 0.75 | -0.045 | - 0.030 | 18.0 20.0 | - | 8.0 10.5 | - |
| Grade | Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) min | Hardness | |
|---|---|---|---|---|---|
| Rockwell B (HR B) max | Brinell (HB) max | ||||
| 304 | 515 | 205 | 40 | 92 | 201 |
| 304L | 485 | 170 | 40 | 92 | 201 |
| 304H | 515 | 205 | 40 | 92 | 201 |
| 304H also has a requirement for a grain size of ASTM No 7 or coarser. | |||||
| Grade | Density (kg/m³) | Elastic Modulus (GPa) | Mean Coefficient of Thermal Expansion (μm/m/°C) | Thermal Conductivity (W/m·K) | Specific Heat (J/kg·K) | Electrical Resistivity (NΩ·m) |
|---|---|---|---|---|---|---|
| 304 | 8000 | 193 | 17.2 | 17.8 | 18.4 | 16.2 |
| 304L | 8000 | 193 | 17.2 | 17.8 | 18.4 | 16.2 |
| 304H | 8000 | 193 | 17.2 | 17.8 | 18.4 | 16.2 |
A stainless steel 304L elbow is a type of pipe fitting made from the stainless steel alloy 304L. This is a low-carbon variation of stainless steel grade 304. The "L" in 304L stands for "Low carbon," indicating that it contains a lower carbon content compared to standard 304 stainless steel. The stainless steel 304L elbow is designed to provide corrosion resistance, durability, and ease of welding in applications where stainless steel is required.
A stainless steel 304 tee is a type of pipe fitting that is used to create a T-shaped junction in a piping system. Similar to the case of the elbow, a stainless steel 304 tee is made from the stainless steel alloy 304. Stainless steel 304 is a versatile and widely used austenitic stainless steel known for its corrosion resistance, durability, and versatility. When selecting and installing stainless steel 304 tees, it's essential to consider factors such as the specific requirements of the application, pressure, temperature, and compatibility with the rest of the piping system.
A stainless steel 304H cross is a type of pipe fitting that is used to create a four-way intersection in a piping system. Similar to the case of the elbow and tee, a stainless steel 304H cross is made from the stainless steel alloy 304H. Stainless steel 304H is a high-carbon variant of stainless steel 304. When selecting and installing stainless steel 304H crosses, it's crucial to consider factors such as the specific requirements of the application, pressure, temperature, and compatibility with the rest of the piping system.
A stainless steel 304H reducer is a type of pipe fitting that is used to connect two pipes of different diameters, allowing for a reduction in size from a larger to a smaller pipe. The 304H designation indicates a high-carbon variant of stainless steel 304. The higher carbon content provides increased high-temperature strength and resistance to creep deformation.
A stainless steel 304L cap refers to a pipe fitting that is designed to cover the end of a pipe. This cap serves several purposes, including preventing the entry of contaminants into the pipe, providing a finished appearance to the end of the pipe, and facilitating the sealing of the pipe end. When selecting and installing stainless steel 304L caps, it's important to consider factors such as the specific requirements of the application, pressure, temperature, and compatibility with the rest of the piping system.
Stainless steel grade 304 is generally considered corrosion-resistant and is less likely to rust compared to regular carbon steel. However, under certain conditions, 304 stainless steel can still corrode and exhibit rusting.
304 stainless steel contains chromium, which forms a passive protective layer on the surface when exposed to oxygen. This chromium oxide layer acts as a barrier, protecting the underlying steel from corrosion. However, this passive layer can be compromised under certain circumstances, leading to rust formation. Some factors that can contribute to rusting in 304 stainless steel include:
Exposure to Chlorides: Chloride-containing environments, such as coastal areas with saltwater exposure, can break down the protective chromium oxide layer more easily. In such conditions, stainless steel 316, which contains molybdenum for enhanced chloride resistance, might be a better choice.
Harsh Chemicals: Exposure to certain harsh chemicals or acids can also damage the protective layer and lead to rusting.
Scratches or Damage: Physical damage to the surface, such as scratches or gouges, can compromise the protective layer and expose the steel to corrosion.
Poor Maintenance: In environments with poor maintenance or where the stainless steel is not cleaned regularly, contaminants or deposits can accumulate on the surface, potentially leading to corrosion.
The cost of stainless steel, including grade 304, can be influenced by several factors, contributing to its relatively higher price compared to other materials. Here are some reasons why 304 stainless steel may be considered expensive:
Alloy Composition: Stainless steel 304 contains a significant amount of chromium and nickel, which are alloying elements that contribute to its corrosion resistance and other desirable properties. The cost of these alloying elements, especially nickel, can impact the overall price of the material.
Corrosion Resistance: Stainless steel 304 is known for its excellent corrosion resistance, making it suitable for various applications, including those in corrosive environments. The alloying elements that enhance corrosion resistance contribute to the overall cost.
Quality and Purity: Higher-quality stainless steel is often more expensive. Grade 304 is a standard "18-8" stainless steel, meaning it contains 18% chromium and 8% nickel. The quality of the raw materials and the precision in manufacturing can affect the final cost.
Production Processes: The production of stainless steel involves specific processes, such as melting, casting, rolling, and heat treatment, which can be energy-intensive and contribute to production costs.
Market Demand and Supply: The law of supply and demand affects the pricing of stainless steel. If demand is high or if there are supply chain disruptions, prices may increase. Additionally, fluctuations in the cost of raw materials, such as nickel, can impact the overall price of stainless steel.
Customization: If stainless steel products require customization, such as specific sizes, shapes, or finishes, the manufacturing process may involve additional steps, increasing the cost.
Certifications and Compliance: Meeting industry standards and certifications for stainless steel, such as ASTM standards, may involve additional testing and quality control measures, contributing to the overall cost.
Ensure that the fittings comply with relevant standards, check material certifications, and follow proper welding procedures. Regular inspection and testing, such as visual inspection, radiographic testing, and hydrostatic testing, help ensure the quality and integrity of the fittings.
Alloy Composition: Stainless steel 304 contains a significant amount of chromium and nickel, which are alloying elements that contribute to its corrosion resistance and other desirable properties. The cost of these alloying elements, especially nickel, can impact the overall price of the material.
Corrosion Resistance: Stainless steel 304 is known for its excellent corrosion resistance, making it suitable for various applications, including those in corrosive environments. The alloying elements that enhance corrosion resistance contribute to the overall cost.
Quality and Purity: Higher-quality stainless steel is often more expensive. Grade 304 is a standard "18-8" stainless steel, meaning it contains 18% chromium and 8% nickel. The quality of the raw materials and the precision in manufacturing can affect the final cost.
Production Processes: The production of stainless steel involves specific processes, such as melting, casting, rolling, and heat treatment, which can be energy-intensive and contribute to production costs.
Market Demand and Supply: The law of supply and demand affects the pricing of stainless steel. If demand is high or if there are supply chain disruptions, prices may increase. Additionally, fluctuations in the cost of raw materials, such as nickel, can impact the overall price of stainless steel.
Customization: If stainless steel products require customization, such as specific sizes, shapes, or finishes, the manufacturing process may involve additional steps, increasing the cost.
Certifications and Compliance: Meeting industry standards and certifications for stainless steel, such as ASTM standards, may involve additional testing and quality control measures, contributing to the overall cost.
Stainless Steel 304 is commonly preferred for pipe fittings in various applications due to several advantageous properties:
Corrosion Resistance: Stainless Steel 304 exhibits excellent corrosion resistance in a wide range of environments. This makes it well-suited for use in piping systems, especially where exposure to corrosive substances or harsh conditions is a concern.
Versatility: Stainless Steel 304 is versatile and can be used in a variety of industries and applications, including food and beverage, chemical processing, pharmaceuticals, and more. Its compatibility with different substances and resistance to corrosion make it a reliable choice for diverse settings.
Ease of Fabrication: Stainless Steel 304 is known for its good formability and ease of fabrication. This makes it convenient for manufacturers to produce a wide range of pipe fittings with different shapes and sizes to meet specific requirements.
Hygienic Properties: In industries such as food and pharmaceuticals, where hygiene is crucial, Stainless Steel 304 is preferred due to its non-reactive and easy-to-clean surface. It does not impart unwanted flavors or contaminants to the substances being transported through the pipes.
High Strength: Stainless Steel 304 offers good strength and toughness, making it suitable for various structural components within a piping system. It can withstand the stresses associated with fluid flow, temperature changes, and external forces.
Cost-Effectiveness: Compared to some other stainless steel grades, 304 is often more cost-effective while still providing excellent corrosion resistance and other desirable properties. This makes it a popular choice for a wide range of applications where a balance between performance and cost is important.
Weldability: Stainless Steel 304 has good weldability, allowing for the fabrication of strong and reliable welded joints. This is essential in the construction of piping systems where welding is a common joining method.
Availability: Stainless Steel 304 is widely available and commonly stocked by suppliers, contributing to its popularity and ease of procurement.
