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Measurement Methods of Carbon Steel Flanges

Measurement Methods of Carbon Steel Flanges

  • Posted: 10/08/2015 08:10:00
  • Hits: 196

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: 309

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: 290

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: 440

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: 299

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: 329

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: 305

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...


Measurement of Stainless Steel Flanges

Measurement of Stainless Steel Flanges

  • Posted: 07/07/2015 06:07:20
  • Hits: 300

1. Preparation before measurement (1) Before measurement, the first thing is to draw a rough draft of various jointed pipe flanges and number them consecutively in accordance with the position of flanges, thus facilitating clamp installation based on these numbers. (2) During installation, stai...


Pipeline Connection of Lap Joint Flanges

Pipeline Connection of Lap Joint Flanges

  • Posted: 06/30/2015 03:06:30
  • Hits: 348

1. The connection of stainless steel pipelines and lap joint flanges is suitable for connection of pipes with equal or different diameters. Such connection is detachable connection.   2. Pipeline connection of lap joint flanges is carried out in the following order: (1) Before installation...