Steel Pipe Flange Types, Sizes & Uses

Introduction

Application

Specification

Feature

Product Introduction

In pipeline engineering, flanges are mainly used for pipeline connection.

1. Standard: ANSI, DIN, JIS, BS, etc.
2. Size: 1/2″- 72″
3. Pressure: A. Class150/300/600/900/1500 b. JIS 5K/10K/16K20K c. PN6/10/16/25/40
4. Type: Flange, forged flange, plate flange
5. Material: ASTM A105, Rst37.2, C22.8, carbon steel, Alloy steel, stainless steel, etc.
6. Surface: Black painted, oil, galvanizing
7. Special design available

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Product Application

Petrochemical industry

Flanges play an important role in pressure transfer and sealing in oil and gas exploitation, refining and storage. Due to the complex media involved in the petrochemical industry, the tightness is very high. Therefore, when selecting and using this kind of pipe fittings, it is necessary to ensure that their material, manufacturing process and sealing performance meet industry standards to ensure production safety.

Chemical industry

They also play an important role in chemical production. The chemical production environment is usually harsh, requiring steel flange to withstand conditions such as high temperature, high pressure and corrosive media. In chemical equipment, they are often used to connect pipes, valves and instruments to ensure the continuity and stability of the production process.

Shipbuilding

In the field of shipbuilding, they are widely used to connect hulls with various equipment and instruments. In addition, it can effectively reduce the friction between the hull and the sea water, and enhance the strength of the hull structure. The quality and performance requirements are high in shipbuilding to ensure the safety and stability of sea navigation.

Construction industry

In the construction industry, pipe flanges are used to connect equipment such as plumbing, heating, cooling and ventilation. Through the connection, it can ensure the stable operation of the construction equipment and improve the comfort and safety of the building.

Product Specification

Size Range	From ½” up to 60″
Schedule	SCH STD, XS, XXS, SCH 10 ~ SCH 160
Material Code
Carbon steel	ASTM A105, ASTM A350 LF1/ LF2/LF3
	ASTM A694 F42/F46/F52/F56/F60/F65/F70
Alloy steel	ASTM A182 F1, F5, F7, F9, F11, F12, F22, F91
Special alloy	Inconel 600, Inconel 625, Inconel 718, Inconel X750, Incoloy 800,
	Incoloy 800H, Incoloy 825, Hastelloy C276, Monel 400, Monel K500
	WPS 31254 S32750, UNS S32760
Stainless steel	ASTM A182 F304/304L, F316/316L, F321, F347
Duplex /super duplex stainless steel &nbsp	ASTM A 182 F51/UNS S31803, F53/UNS S32F50, F55/UNS S32F60
Standards	ANSI, ISO, JIS, DIN, BS,GB, SH, HG,QOST,ETC.
CE and certification	ISO9001:2000 , API , BV , SGS

Advantageous Features

Connection function

It is a component connecting pipes to pipes and equipment to equipment. This connection consists of flanges, washers and bolts to form a removable sealing structure.

Structural characteristics

The two flanges are tightly connected with bolts and sealed with gaskets. According to the different connection mode, it is divided into external thread connection (line connection), electric welding connection and clamp connection and other types.

Material diversity

There are a variety of materials of flanges, common carbon steel, stainless steel and so on. Carbon steel has the advantages of cheap, easy processing and high strength; Stainless steel has corrosion resistance, not easy to rust and other characteristics, suitable for corrosive media and high temperature occasions.

Excellent sealing

The connections are formed by placing gaskets between flanges and fastening bolts. The gasket can be made of rubber, polytetrafluoroethylene and other different materials to ensure the tightness of the connection and effectively prevent fluid leakage. In addition, the connection adopts two ways of face to face sealing and comprehensive sealing, making the sealing more reliable.

Strong pressure bearing capacity

Because the connection is composed of multiple bolts and gaskets, it is able to withstand high pressure and tension. Even under high pressure, high temperature and corrosive environment, the connection can keep the connection stable and seal reliable.

Ease of installation and maintenance

The connection does not need to be connected to the pipe in a straight line during installation, only need to align the flange and bolt it. This installation method is simple and convenient, and greatly saves time and labor costs. At the same time, the disassembly and maintenance of the connection are also relatively easy, which improves the work efficiency.