Big Forged Flanges Stainless Steel Carbon Steel Brass Forged Flange

Introduction of Stainless Steel Carbon Steel Brass Forged Flange

Flange, also known as flange flange or flange. Flanges are the interconnected parts between shafts and are used for the connection between pipe ends; they are also used as flanges on the inlet and outlet of equipment for the connection between two equipment, such as reducer flanges. Flange connection or flange joint refers to a detachable connection in which flanges, gaskets and bolts are connected to each other as a set of combined sealing structures. Pipe flange refers to the flange used for piping in the pipeline installation, and used on equipment refers to the inlet and outlet flanges of the equipment. There are holes on the flanges, and bolts make the two flanges tightly connected. The flanges are sealed with gaskets. Flange is divided into threaded connection (thread connection) flange, welding flange and clip flange. Flanges are used in pairs, wire flanges can be used for low-pressure pipelines, and welded flanges can be used for pressures above four kilograms. Add a gasket between the two flanges and fasten them with bolts. Different pressure flanges have different thicknesses, and they use different bolts. When pumps and valves are connected to pipelines, parts of these equipment are also made into corresponding flange shapes, also known as flange connections. Any connection parts that are bolted at the periphery of two planes and closed at the same time are generally called "flanges", such as the connection of ventilation ducts, such parts can be called "flange parts". But this connection is only a part of the equipment, such as the connection between the flange and the water pump, it is not easy to call the water pump "flange parts". Smaller ones, such as valves, can be called "flange parts"

Classification:
1. According to the chemical industry (HG) industry standard: integral flange (IF), threaded flange (Th), plate flat welding flange (PL), neck butt welding flange (WN), neck flat welding flange (SO), socket welding flange (SW), butt welding ring loose flange (PJ/SE), flat welding ring loose flange (PJ/RJ), lining flange cover (BL(S)), Flange cover (BL) [2] .
2. According to the petrochemical (SH) industry standard: threaded flange (PT), butt welding flange (WN), flat welding flange (SO), socket welding flange (SW), loose flange (LJ) , Flange cover (not shown).
3. According to the mechanical (JB) industry standard: integral flange, butt welding flange, plate flat welding flange, butt welding ring plate loose flange, flat welding ring plate loose flange, flanging ring plate loose flange Flange, flange cover.
4. According to the national (GB) standard: integral flange, threaded flange, butt welding flange, flat welding flange with neck, socket welding flange with neck, butt welding ring with neck loose flange, plate flat flange Welding flange, butt welding ring plate loose flange, flat welding ring plate loose flange, flanging ring plate loose flange, flange cover.

Material:

Carbon steel: Q235A, Q235B,Q345BC22.8, ASTM A105, SS400
Alloy steel: ASTM A694,F42,F46, F52,F56, F60, F65, A350 LF2 ,

Stainless steel: ASTM A182 F1, F5, F9, F22, F91,
310/F304/304L/F316/F316L, F321, F347.

Surface treatment:

Galvanized(hot,cold),varnish
Method rust oil
Plastic spraying

Use:
Because the flange has good comprehensive performance, it is widely used in chemical, construction, water supply, drainage, petroleum, light and heavy industry, refrigeration, sanitation, plumbing, fire protection, electric power, aerospace, shipbuilding and other basic projects.

Related categories:
(1) Reducing flange
Product Name: Reducer Flange
Technical parameters: according to national standards
Quality Standard: Manufactured in strict accordance with the relevant standards formulated by the state
Product Specifications: DN15-DN2000
Product packaging: wooden box or other
Product color: metallic color

Product features: anti-corrosion, acid and alkali resistance, long service life, etc., reasonable price calculation, smooth surface, acid and alkali resistance, high temperature resistance, beautiful appearance, strong texture performance.
Production process: professional overall forging, forging manufacturing, medium plate cutting, medium plate rolling, etc.
Processing method: high-precision CNC lathe turning, ordinary lathe finishing, argon arc welding, etc.
Nominal pressure sch5s, sch10s, sch20s, sch30s, sch40s, etc.
Manufacturing standard: national standard, American standard, Russian standard, Japanese standard, etc.
Material: 201, 304.316.316L.0Cr18Ni9.321.202, etc.
Application: Widely used in water conservancy, electric power, power station, pipe fittings, industry, pressure vessel, etc.
Connection method: flange nut, bolt connection.

(2) Stainless steel flange
Product name: Stainless steel flange
Specifications: 1/2″～240″(10-6000)
Pressure class: 0.6MPa ~ 32MPa, 150Lb ~ 2500Lb, PN0.25-PN42.0
Material: 304, 304L, 321, 316, 316L, 310S and other materials
Ministry of Chemical Industry standard: HG5010-52～HG5028-58, HGJ44-91～HGJ65-91, HG20592-2009 (PN series), HG20615-2009 (Calss series)
Applications: boilers and pressure vessels, petroleum, chemical, shipbuilding, pharmaceutical, metallurgy, machinery, food and other industries.

(3) Pressure vessel flange
Product Name: Pressure Vessel Flange
Specifications: DN300~3000
Product Notes: Pressure vessel flange application industry: HVAC, power, building water supply, pressure vessel fittings, pressure pipe fittings.
Product Category: Flange Series
Application industry: HVAC, power, building water supply, pressure vessel accessories, pressure pipe accessories.
Application technical parameters
Seal Nominal pressure PN, MPa (bar) 0.6 1.0 1.6 2.5 4.0 6.4
Concave and convex surface (MFM) DN1300~3000 DN300~3000 DN400~2000 DN300~800
Tongue and groove surface (TG) DN1300~3000 DN300~3000 DN300~3000 DN300~800
Full plane (FF) DN300~3000 DN300~3000 DN300~3000 DN300~800

(4) Flat welding flange
Flat welding flanges include plate flat welding flanges and necked flat welding flanges.
Plate Flat Welding Flange (PL)

Flat welding flanges are suitable for steel pipe connections with a nominal pressure not exceeding 2.5MPa. The sealing surface of the flat welding flange can be made into three types: smooth, concave-convex and tongue-and-groove. The application of the smooth flat welding flange is the largest. It is mostly used when the medium conditions are relatively mild, such as low-pressure non-purified compressed air and low-pressure circulating water.

Flat Weld Neck Flange (SO)
The neck height of the flat welding flange with neck is lower, which improves the rigidity and bearing capacity of the flange. Compared with butt welding flanges, the welding workload is large, the consumption of welding rods is high, and it cannot withstand high temperature and high pressure, repeated bending and temperature fluctuations, but it is more convenient to install on site, and the process of slapping and rubbing the welding seam can be omitted, which is more popular.

(5) Butt welding with neck (WN)
Butt Weld Flanges: Neck flange welds are often referred to as "high pivot" flanges. Its purpose is to transfer pressure to the piping, thereby reducing high stress concentrations in the flange base. Neck flange welds are the best design butt welds that provide flanges due to their inherent structural value. However, the price is relatively high, because the production process of the product is complicated.
Threaded (Threaded) Flange: The threaded flange is connected with a thread. But the center of the product has the thread size corresponding to the tube. Its main advantage is that it can be assembled without soldering.
Sliding Flanges: Sliding flanges have a lower pivot because the pipe enters the single flange before welding. It is welded inside and outside to provide enough strength to prevent leakage.
Lap Flange: The Lap Flange is actually the exact same sliding flange, except it is a radius between the hole and the flange race. It is necessary for the radius to have flanges to accommodate lap stub ends. Typically, lap flanges and lap stubs mate together at the end of the assembly system.
The socket weld flange is a similar slip flange, except it has a hole and counter hole size. The matching of the counter hole with the pipe allows the pipe to be inserted into the flange similar to the sliding flange. The diameter of the smaller hole is the same as the ID to match the same pipe. The confinement is a built-in hole that acts as a shoulder sleeve designed for piping to stay at the bottom. This eliminates any flow restriction when using socket weld flanges.

(6) Socket welding flange (SW)
Socket Welding Flange

Sealing surface form: raised surface (RF), concave-convex surface (MFM), tongue and groove surface (TG), ring connection surface (RJ)
Material: Carbon Steel: ASTM A105, 20#, Q235, 16Mn, ASTM A350 LF1, LF2 CL1/CL2, LF3 CL1/CL2, ASTM A694 F42, F46, F48, F50, F52, F56, F60, F65 ,F70;
Alloy Steel: ASTM A182 F1, F5a, F9, F11, F12, F22, F91, A182F12, A182F11, 16MnR, Cr5Mo, 12Cr1MoV, 15CrMo, 12Cr2Mo1, A335P22, St45.8/Ⅲ, 35CrMoV, 45CrMo, etc.
Manufacturing standard: ANSI B16.5, GB/T9117.1-2000—GB/T9117.4-200, etc.

(7) Threaded flange (TH)
Threaded flange nominal diameter: DN8 ~ DN100 Working pressure: 1.0 ~ 2.5 (MPa) Plate threaded flange material: stainless steel, carbon steel, alloy steel.
Threaded flange application: suitable for thread locking and sealing of industrial and civil pipes such as fire protection, gas, hot and cold water, air conditioning, air pressure pipes, oil pipes, instruments, hydraulic pipes, etc.
Flange cover (BL)
Flange cover, also known as blind flange, is a flange without a hole in the middle, which is used to seal the pipe plug. There are many types of sealing surfaces, including flat surface, convex surface, concave-convex surface, tongue and groove surface, and ring connection surface.
Sealing surface: flat surface (FF), raised surface (RF), concave and convex surface (MFM), tongue and groove surface (TG), ring connection surface (RJ)
Production materials:
Carbon Steel: ASTM A105, 20#, Q235, 16Mn, ASTM A350 LF1, LF2 CL1/CL2, LF3 CL1/CL2, ASTM A694 F42, F46, F48, F50, F52, F56, F60, F65, F70 ;
Stainless Steel: ASTM A182 F304, 304L, F316, 316L, 1Cr18Ni9Ti, 0Cr18Ni9Ti, 321, 18-8;
Alloy Steel: ASTM A182 F1, F5a, F9, F11, F12, F22, F91, A182F12, A182F11, 16MnR, Cr5Mo, 12Cr1MoV, 15CrMo, 12Cr2Mo1, A335P22, St45.8/Ⅲ.

(8) Loose flange
Neck butt welding ring loose flange

Loose sleeve flange butt welding ring loose sleeve neck flange, butt welding ring loose sleeve plate flange, flat welding ring loose sleeve plate flange, plate overturning loose sleeve flange, in addition to meet the needs of locking after installation, There are holes in the rod, these holes can prevent the bolts from loosening when subjected to vibration. Some flange bolts with unthreaded polished rods should be thin, called thin rod flange bolts. This kind of flange bolt is conducive to the connection of variable forces. There are special high-strength bolts on the steel structure, the head will be larger, and the size will also change.
Flat Weld Ring Loose Flange (PJ/SE)

The flat welding ring loose sleeve flange is a movable flange, which is generally matched with water supply and drainage accessories (the most common on expansion joints). The pipes and equipment are connected with bolts. The purpose of using flat welding ring loose sleeve flange is generally to save material. Its structure is divided into two parts. One end of the pipe part is connected to the pipe, and the other end is made into a flange, and the flange part is sleeved on the flange. The flange plate is made of low-grade material, and the pipe part is made of the same material as the pipe, so as to save material.

Flat welding ring loose flange:
1. Cost saving. When the pipe material is special and expensive, the cost of welding flanges of the same material is high.
2. It is inconvenient for welding or processing or requires high strength. Such as plastic pipes, glass steel pipes and the like.
3. Easy to construct. For example, it is not easy to align the flange bolt holes during connection or to prevent the flange bolt holes of the equipment from changing in the future.

Flat welding ring loose flange production standard:
National standard: GB/T9112-2000 (GB9113·1-2000～GB9123?4-2000)
American Standard: ANSI B16.5 Class150, 300, 600, 900, 1500 (WN, SO, BL, TH, LJ, SW)
Japanese standard: JIS 5K, 10K, 16K, 20K (PL, SO, BL, WN, TH, SW)
German standard: DIN2573, 2572, 2631, 2576, 2632, 2633, 2543, 2634, 2545 (PL, SO, WN, BL, TH)
Ministry of Chemical Industry Standard: HG5010-52～HG5028-58, HGJ44-91～HGJ65-91
Flange standard: HG20592-2009 (PN series) HG20615-2009 (Calss series)
Mechanical Department Standard: JB81-59～JB86-59, JB/T74-1994, JB/T79-94～JB/T86-94
Pressure vessel standard: NB/T47020-2012～NB/T47027-2012, JB1157-82～JB1160-82 B16.47A/B B16.39 B16.48

Ring groove face flange and flange cover

Blind board
Butt welding ring loose flange 6
Swivel flange
Anchor flange
Welding / Cladding Flange

Marine lap welding steel flange standard number: This standard applies to marine products and marine engineering products. The main materials are: carbon steel, alloy steel, low temperature steel, stainless steel.

Main Testing and Inspection Device

Kingrail alreay supplied a variety of wheels to the world’s freight and passenger customers in over 50 countries. Wheels range from 250mm to 1100mm diameters and are avaiblable to all recognised or specialized rail industry standards. both standard and bespoke (customized) wheels of customers’requirments can be acceptable or meeted in small or large quantities. In every way possible 100%,Short lead times and the most competitive prices ensures customers needs are satisfied.

We are in the city of Maanshan , where is the Baowu Group MASTEEL Rail Transit Materials Technology Co. Ltd the 9th biggest steel producer globally.Here is the oringinal source of steel material with internatinal standards such as BS,AAR, JIS ,IRS and Gost, which ensure customer to get exceptianal quality safety critical railway components at a very cometitive price.

We believe in quality first principle of our company. Produced by rail industry recognised accreditation schemes then our service and products throughout the supply chain to give quality assurance to all our customers around the world. Kingrail maintains accreditation in ISO, RISQS, . Providing this level of assurance,that is the reason of our customer with not only their confidence, but also their desire to work with us time and time again.What we sell not only the parts but also our industry knowledge ,experiences and service.

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