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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...


Measurement of Stainless Steel Flanges

Measurement of Stainless Steel Flanges

  • Posted: 07/07/2015 06:07:20
  • Hits: 306

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: 353

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...


Features of Carbon Steel Flanges

Features of Carbon Steel Flanges

  • Posted: 06/24/2015 03:06:36
  • Hits: 328

Carbon steel flange is used for pipeline connection. It is an important part and has its own performance advantages. Its quality requirement for use is rather high. Carbon steel flanges are characterized by long service life, corrosion resistance and good heat preservation performance, thus improv...


Production Process of Weld Neck Flanges

Production Process of Weld Neck Flanges

  • Posted: 06/15/2015 08:06:19
  • Hits: 564

Weld neck flange is a kind of flange. As parts, two flanges can be used for connecting the end of a pipe to the end of another pipe, tightly fastened by bolts through holes around flange periphery. Weld neck flange, gasket and fasteners can be collectively called flange joint. Flange joint is an i...


Sealing Faces and Application Scope of Rolling Flanges

Sealing Faces and Application Scope of Rolling Flanges

  • Posted: 06/08/2015 03:06:56
  • Hits: 327

Rolling flanges are divided into cold rolling flanges and hot rolling flanges. They are widely applied in the relatively mild conditions such as low-pressure and unpurified compressed air and low-pressure circulating water, and are featured by relatively cheap price.   Rolling flanges are a...


Introduction, Processes and Function of Blind Flanges

Introduction, Processes and Function of Blind Flanges

  • Posted: 06/02/2015 07:06:40
  • Hits: 590

1. Introduction of blind flanges Blind flange is a kind of a solid round plate with no center holes but with uniformly distributed bolt holes along the periphery of the plate. It is used for covering or closing the end of a pipe or conveniently cleaning sundries in pipelines for pipeline maintena...