Stainless Steel Flange

They also have a smaller bolt circle diameter than Series A flanges. Smaller bolt circle diameter results in less flange movement after installation. Both the A-series and B-series standards define raised face (RF) butt-weld and blind flanges, but only the A-series defines ring joint (RTJ) flanges from classes 300 to 900 in this standard. In terms of price, ASME B16.47 series A flanges are more expensive than ASME B16 47 series B flanges.

Flanges are rounded edges with outwardly projecting flanges or ribs that sometimes create strength at the joint. There are different types of flanges and different material grades are used to produce these flanges.

Flanges can be said to be a method of connecting pipes. Sliding flanges are mainly used for low pressure fluids with minimal leakage risk. Stainless steel sliding flanges are usually used for water pipes, low pressure compressed air, etc.

Reducing flanges change pipe size without adding additional fittings. The reduction in flanges is always abrupt compared to what can be achieved with concentric butt welded reducers. Reducer flanges are usually available as threaded reducer flanges or reducer flange slides. A 6″ x 4″ reducer slip on a flange will have the flange dimensions (outside diameter, bolt circle diameter) of a 6″ flange, but have the holes of a 4″ flange. This allows it to mate with 6″ pipe via a flange connection, but connect 4″ pipe instead.

ASME B16.5 slip flanges are a quality and safety standard trusted by various industries. These standard flanges are used in various industries such as oil and gas, petrochemical, fire water lines and more.

The ring joint face is designed with a grooved groove into which a metal ring gasket is inserted to form a seal with the mating flange. Metal rings are available in oval or octagonal shape. The most common material for ring joint gaskets is 316 stainless steel, which makes it ideal for corrosive applications. The image above illustrates the ring gasket and ring joint groove finish on the flange.

ASTM A182 F304 slip flange is another commonly used flange, stainless steel containing chromium and nickel. 18% chrome and 8% nickel make these flanges more durable. The stainless steel 316L slip flange has added molybdenum for increased resistance to general corrosion and chloride ion solutions.

The tongue and groove face has a small contact area with the sealing element, which provides good gasket compression at low bolt loads. The groove groove acts like an annular groove and provides a good way to accommodate the gasket. This is ideal for high pressure applications. The illustration above illustrates a tongue and groove face flange.

The flange is a raised face sliding flange made of 304L material. Sliding flanges allow pipes to slide easily over them, while raised faces help maximize connections. BS4504 Large Diameter Flange Flanges facilitate quick access and easy inspection of pipelines, making overall pipeline work more convenient.

Type 316 is a molybdenum steel machining process that increases resistance to pitting corrosion in solutions containing chlorides and other halides. Additionally, it provides excellent tensile, creep and stress rupture strength at elevated temperatures. Type 316 is available in low carbon (316L) and high carbon (316H) alloys.

316 stainless steel flanges, the second-highest among austenitic stainless steel flanges, are the regular molybdenum-containing sizes. SS 316 Socket Weld Flanges have a carbon content and are the best choice for high temperature applications. Grade 316 Stainless Steel Forged Flanges (BLRF) contain molybdenum and are generally more resistant to corrosion than Grade 304.

Reducer flanges are used to reduce the diameter of pipes at the point of connection. A flange is essentially a circular object with a lip or collar on it, which is used for bolting and welding operations. These objects such as stainless steel reducing flanges are very useful in pressure level applications where the connection of two pipes must be absolutely tight. The reducing flange is important because it reduces the diameter of the pipe and supports the maintenance of pressure and fluid flow in the application.

304 stainless steel is a low carbon (0.08% max) version of base 18-8 (also known as 302). Type 302 contains 18% chromium and 8% nickel. Type 304 is slightly less strong than 302 due to its lower carbon content. Type 304 is used in welding applications because the low carbon allows some exposure in the carbide precipitation range of 800¡ãF – 1500¡ãF without the need for a post annealing operation . However, the severity of corrosive environments may require annealing after welding or using 304L. Type 304L has a carbon content of 0.03% or less.

ASME B16.47 covers large diameter steel flanges from 26″ nominal to 60″ nominal pipe sizes. There are two types of B16.47 flanges, A series and B series. The thickness, bolt circle diameter and number of bolt holes are slightly different between the two. Pressure classes covered by B16.47 are Class 75, 150, 300, 400, 600 and 900#. Standard cover flanges are cast, forged or sheet metal (blind flanges only).

The ASME B16.5 standard covers steel pipe flanges and flanged fittings from NPS 1/2 to NPS 24 metric/inch pressure classes 150 to 2500. It covers pressure-temperature ratings, materials, dimensions, tolerances, markings, tests, and methods to specify openings for pipe flanges and flange fittings.

Two very important flanges, such as butt welding flanges and blind flanges, are very commonly used in piping systems. The terms “B16.5” or “B16 5” are used interchangeably and refer to the same standard. However, standard ASME B16 5 (ANSI B16 5) only covers sizes up to 24 inches. For larger sizes, the ASME B16.47 standard covers pressure-temperature ratings, materials, dimensions, tolerances, marking and testing for NPS 26 to NPS 60 size pipe flanges and is available in classes 75, 150, 300, 400, 600 and 900.

Pipe flanges connect pipes and components in a piping system by using bolted connections and gaskets. The most commonly used flanges are butt welding flanges, sliding flanges, blind flanges, socket welding flanges, threaded flanges and lap joint flanges (RTJ flanges). This type of connection in pipe flanges facilitates disassembly and disconnection for service and regular maintenance. The most common specification for carbon steel and stainless steel flanges is ANSI B16.5 / ASME B16.5.

Metal flanges are commonly used in industrial, commercial and institutional applications. Steel pipe flanges are available in a variety of styles and pressure ratings. Metal flanges are classified from 150 to 2500 #. In addition to specifying a pressure rating, some flanges, such as butt weld and socket weld flanges, require a piping schedule to be specified. This ensures that the pipe hole matches the hole in the weld neck or socket weld flange.

HT PIPE offers a wide range of carbon steel, stainless steel and nickel alloy pipe flanges. We can also supply special flanges such as long butt weld flanges, special material requirements and high production pipe flanges.

A reducing flange is a special type of flange that proves beneficial when used in projects that require fitting two pipes of different sizes together. There are many different types of reducing flanges, some of which are as follows – Weld Neck Reducers, Drop-in ASME B16.5 Reducers and Threaded Reducers.

This flange type is designed to connect via butt weld connections to pipes or equipment that require flanged joints. Weld necks provide good service in a variety of temperature and pressure applications. Butt weld flanges must specify a pipe plan for drilling. Due to the welded neck, it is a popular choice for pressure vessels and creating manholes, etc. These flanges are also known as ANSI flanges or ASME B16.5 flanges.

In addition to ASME B16.5, manufacturers use the ASTM A182 specification in the construction of these flanges. ASTM A182 SS Reducer Flanges with Hubs are designed for use in high temperature environments. This is why these alloy steel reducing flange materials are often supplied by heat treatment.

The flange itself is not welded, but the short pipe end is inserted/slid over the flange and welded to the pipe. This arrangement facilitates flange alignment where misalignment can be an issue. In a lap flange, the flange itself is not in contact with the fluid. The stub end is the part that is welded to the pipe and is in contact with the fluid.

After hot working, these forged flanges must be cooled to a specific temperature before they can be heat treated. Generally speaking, heat treatment used on ANSI B16.5 carbon steel reducing flanges must be performed according to certain requirements, such as heat treatment type, austenitization/solution temperature, cooling medium, and quenching.

Short ends are available in Type A and Type B. Type A short ends are the most common. Lap flanges are flat only. People confuse lap flanges with slip-on flanges because they look very similar, except that lap flanges have rounded edges and flat surfaces on the back.

In addition to chemical and mechanical properties that meet ASTM A182 specifications, stainless steel reducing flanges include standard ASME B16.5 requirements and recommendations for flange bolted connections, flange gaskets, and flange joints.

A blind flange is a solid flange without holes or threaded holes used to close the end of a pipe, fitting, valve or equipment. Blind flanges are also used in pressure test equipment. Blind flanges are available in two types: convex and flat.

The most popular material grades are made of carbon steel. HT PIPE not only offers carbon steel pipe flanges and flange fittings, but we also offer stainless steel flanges for a variety of projects. Plate flanges can be ordered for waterworks and petrochemical applications. Bar flanges and forged gauge flanges can also be manufactured to the dimensions in our catalog.

There are various austenitic and ferritic flanges on the market. Ss Flange also known as stainless steel flange is one of them. Stainless steel pipe flanges are available in a variety of grades with widely varying mechanical properties. Due to their corrosion resistance, these stainless steel pipe flanges are used in acid and fertilizer production plants. Stainless steel flange manufacturers in India recommend these flanges because of their resistance to stress-related corrosion cracking. Ss 316 plate flanges are austenitic grade flanges with high molybdenum content.

Cross-contamination can corrode the stainless steel square flange base metal, resulting in discoloration of the finished product. Post-weld annealing is recommended for stainless steel 304 sliding flanges. Additionally, cold working of Oatey stainless steel flanges increases tensile strength and hardness. The flanges show a typical tensile strength of 75,000 psi 515 MPa and a yield strength of 30,000 psi 205 MPa. Ansi B16.5 Uns S30400 butt weld flanges can be conventionally hot worked.