JINBAICHENG Metal Materials Co., Ltd

Forged Steel Flange

Short Description:

Flange is abbreviated as flange, which is just a general term. It usually refers to the opening of several fixing holes on the periphery of a disc-like metal body for connecting other things. This thing is widely used in machinery, so it looks strange, as long as it looks like a flange, its name is derived from the English flange.


Product Detail

Product Tags

Product Introduction

Place of Origin: Shandong, China
Brand Name: Jinbaicheng
Model: 304 F304l F316
Standards: ANSI, BS, DIN, GB, ISO, JIS, Jpi, ASME
Product name: Forged steel flange
Material: carbon steel
Pressure: Class150/300/600/9001500/2500

Size: 15mm-6000mm
Process: Forging castings
Packing: wooden box
Certificate: ISO9001
Color: silver
Usage: transport water
Minimum order quantity: 1 piece

Product Display

Forged steel flange 4
Forged steel flange 2
Forged steel flange 5

Applications

Flange is also called flange or flange.
The part that connects the pipe and the pipe to each other is connected to the end of the pipe. There are holes on the flanges, and bolts make the two flanges tightly connected. The flanges are sealed with gaskets. Flanged pipe fittings refer to pipe fittings with flanges (lugs or sockets). It can be made by casting (not shown in the picture), or it can be formed by threaded connection or welding. The flange connection (flange, joint) is composed of a pair of flanges, a gasket and several bolts and nuts. The gasket is placed between the sealing surfaces of the two flanges. After tightening the nut, the specific pressure on the gasket surface reaches a certain value and deforms and fills up the unevenness of the sealing surface to make the connection tight and leak-proof. Flange connection is a detachable connection. According to the connected parts, it can be divided into container flange and pipe flange.

According to the structure type, there are integral flanges, loop flanges and threaded flanges. Common integral flanges include flat welding flanges and butt welding flanges. Flat-welded flanges have poor rigidity and are suitable for occasions with pressure p≤4MPa; butt-welded flanges are also called high-neck flanges with greater rigidity and are suitable for occasions with higher pressure and temperature. There are three types of flange sealing surface: flat sealing surface, suitable for occasions with low pressure and non-toxic media; concave-convex sealing surface, suitable for occasions with slightly higher pressure; tongue and groove sealing surface, suitable for flammable and explosive , Toxic media and high pressure occasions. The gasket is a circular ring made of a material that can produce plastic deformation and has a certain strength. Most of the gaskets are cut from non-metallic plates or made by professional factories according to the specified size. The materials are asbestos rubber plates, asbestos plates, polyethylene plates, etc.; thin metal plates (white iron, stainless steel) are also used to remove asbestos. A metal-wrapped gasket made of non-metallic materials; there is also a spiral wound gasket made of thin steel tape and asbestos tape. Ordinary rubber gaskets are suitable for occasions where the temperature is lower than 120°C; asbestos rubber gaskets are suitable for occasions where the temperature of water vapor is lower than 450°C, the temperature of oil is lower than 350°C, and the pressure is lower than 5MPa, and it is generally corrosive. The most commonly used medium is acid-resistant asbestos board. In high-pressure equipment and pipelines, metal gaskets of lens type or other shapes made of copper, aluminum, No. 10 steel, and stainless steel are used. The contact width between the high-pressure gasket and the sealing surface is very narrow (line contact), and the processing finish of the sealing surface and the gasket is relatively high.

The flange is divided into threaded connection (wire connection) flange, welding flange and clamping flange. There are wire flanges and ferrule flanges for low-pressure small diameters. Welded flanges are used for high-pressure and low-pressure large diameters. The thickness of flanges and the diameter and number of connecting bolts are different for different pressures.

Flange production standard

National standard: GB/T9112-2000 (GB9113·1-2000~GB9123·4-2000)

American Standard: ANSI B16.5 Class150, 300, 600, 900, 1500, 2500 (WN, SO, BL, TH, LJ, SW) ANSI B16.47, ANSI B16.48

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 Standards: HG5010-52~HG5028-58, HGJ44-91~HGJ65-91, HG20592-97 series, HG20615-97 series

Ministry of Machinery Standards: JB81-59~JB86-59, JB/T79-94~JB/T86-94, JB/T74-1994 Pressure vessel standards: JB1157-82~JB1160-82, JB4700-2000~JB4707-2000

Ship standard: GB568-65, GB569-65, GB2503-89, GB2506-89, GB/T10745-89, GB2501-89, GB2502-89

Raw materials

The flanges are made of stainless steel plates, carbon steel plates, alloy plates, galvanized steel plates, stainless steel rods, stainless steel forgings, stainless steel profiles, etc.

Material: Forged steel, WCB carbon steel, stainless steel, 316L, 316, 304L, 304, 321, chromium molybdenum steel, alloy steel, chromium molybdenum vanadium steel, molybdenum titanium, rubber lining, fluorine lining material.

Product parameter

Product Name Weld Neck, Blind, Slip On, Lap Joint, Socket Welding, Thread, Spectacle Blind, Etc. (Steel Flange)
Material Stainless Steel, Duplex Steel, Etc.
Material Grade Wp304, Wp304l, Wp304h, f316, Wp316l, Wp316ti, Wp309s, Wp310s, Wp321, Wp321h, Wp347, Wp347h, f3316l, f3316l, f3316l, f3316l, Etc.
Size 1/2" To 48" Sch 5s To Xxs
Standard Ansi b16.5, Ansi b 16.47, Astm a403 Etc. Aisi, Astm, Bs, Din, Gb, Jis, Jis, Aisi, Astm, Gb, Din, En
Process Method Forging/Casting
Pressure Level 150-2500 Lb
Tolerance According To Specifications Or Customer Requirements And Drawings
Application Pipeline Connection, Pipeline Engineering Construction, Etc.
Test 100% Pmi Test; Size Test, Etc.
Quality Requirements  
Price Item The Factory Test Certificate Will Be Provided With The Shipment And Can Accept Third-Party Inspection
To Pay Fob, Cfr, Cif Or Bargaining
Pack t / t, Lc Or As a Negotiation
Delivery Time Plywood Box Or According To Customer's Requirement

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