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Differences between Flat Weld Flange and Butt Weld Flange

Differences between Flat Weld Flange and Butt Weld Flange

  • Posted: 11/19/2015 09:11:18
  • Hits: 210

Because of high production efficiency, easy operation and reasonable price, flat weld flange and butt weld flange are most common weld flanges. In most cases, people will choose these two kinds of flanges. But how to distinguish them and what is the difference?   First, different material...


Production and Processing of Flat Weld Flange

Production and Processing of Flat Weld Flange

  • Posted: 10/26/2015 08:10:46
  • Hits: 199

Flat welded flange has certain technical requirements and parameters in its production and usage, so it must be manufactured in accordance with certain production and processing methods.   1 Flat welding flange should be cut into strips along the steel rolling direction, and then bended a...


Measurement Methods of Carbon Steel Flanges

Measurement Methods of Carbon Steel Flanges

  • Posted: 10/08/2015 08:10:00
  • Hits: 199

With the rapid development of long-distance pipeline construction at home and abroad, pipeline pressure test has become indispensable and important. Before and after the pressure test, cleaning must be done on each pipelines, usually the number is 4 to 5 times. Especially after the pressure test, ...


Some Knowledge Points of Slip On Flanges

Some Knowledge Points of Slip On Flanges

  • Posted: 09/09/2015 08:09:45
  • Hits: 316

Slip on flanges are the most common flanges in China and they can be classified into three types according to the sealing surface: flat faced slip on flanges, concave convex surface slip on flanges and mortise grooved slip on flanges. And the first type, with the largest application, is often used...


Classification and Feature of Flange

Classification and Feature of Flange

  • Posted: 08/14/2015 07:08:44
  • Hits: 313

Classification of flange 1. By materials: carbon steel flange, cast steel flange, alloy steel flange, stainless steel flange, copper flange, aluminum flange, plastic flange, PPC flange and so on. 2. By manufacturing method: push flange, pressed flange, forged flange, casting flange and so on. ...


Manufacturing Process of Reducing Flange Mold

Manufacturing Process of Reducing Flange Mold

  • Posted: 08/08/2015 07:08:03
  • Hits: 448

The manufacturing process of reducing flange is: clamping, feeding, plasticizing, injection molding, opening mold, outing the products and so on. All these molding operations are finished by injection molding machine automatically so that to achieve the fully automated reducer injection molding...


Several Key Points of Selecting Flange Gaskets

Several Key Points of Selecting Flange Gaskets

  • Posted: 07/28/2015 06:07:16
  • Hits: 301

The selected flange gaskets should have the following important characteristics to ensure long-time effective sealing when applied in adverse conditions. 1. Gas tightness Flange gaskets should have gas tightness property when used under recommended temperature and pressure. 2. Compressibili...


How to Detect Pits on Flange Surface

How to Detect Pits on Flange Surface

  • Posted: 07/25/2015 03:07:13
  • Hits: 330

There are two common methods for detecting pits on flange surface, including magnetic flux leakage and ultrasonic wave.   The definition of ultrasonic wave is explained below. The transmission process of mechanical vibration in medium is called wave. In general, humans can hear sounds with a ...


Influential Factors of Flange Sealing

Influential Factors of Flange Sealing

  • Posted: 07/16/2015 10:07:40
  • Hits: 306

1. Bolt pretightening force Bolt pretightening force is an important factor affecting flange sealing. Pretightening force is used to press gaskets so as to meet initial sealing requirement. The force is passed on gasket though flange sealing surface. For the purpose of achieving good sealing, the...