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How to Detect Pits on Flange Surface
- Posted: 07/25/2015 03:07:13
- Hits: 385
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 frequency...
Influential Factors of Flange Sealing
- Posted: 07/16/2015 10:07:40
- Hits: 356
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 force...
Measurement of Stainless Steel Flanges
- Posted: 07/07/2015 06:07:20
- Hits: 338
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, stainless...
Pipeline Connection of Lap Joint Flanges
- Posted: 06/30/2015 03:06:30
- Hits: 403
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, sundries...
Features of Carbon Steel Flanges
- Posted: 06/24/2015 03:06:36
- Hits: 344
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 improving...
Production Process of Weld Neck Flanges
- Posted: 06/15/2015 08:06:19
- Hits: 1088
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 indispensable...
Sealing Faces and Application Scope of Rolling Flanges
- Posted: 06/08/2015 03:06:56
- Hits: 363
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 applicable...
Introduction, Processes and Function of Blind Flanges
- Posted: 06/02/2015 07:06:40
- Hits: 785
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 maintenance....
Passivation Process and Features of Stainless Steel Flanges
- Posted: 05/26/2015 07:05:41
- Hits: 398
Stainless steel flanges have excellent corrosion-resistant performance in water with different qualities, even under the ground, due to thin but solid oxidation film. Water with different qualities does not need to be processed, except when sterilization operation is required. Besides, corrosive diffusate...
Features and Forging Processes of Flat Welding Flanges
- Posted: 05/21/2015 08:05:10
- Hits: 436
1. Features of flat welding flanges Flat welding flanges save space, reduce weight and have good sealing performance due to no leakage design in joint area. The reason why dimension of compact flanges is small is that diameter of sealing element is reduced and sealing surface thereof is thus reduced....
Introduction and Features of Flanged Butterfly Valves
- Posted: 05/13/2015 06:05:47
- Hits: 394
The connection types of butterfly valves can be divided into three kinds: flanged connection, wafer connection and welded connection, which users can select based on specific pipeline requirements. The followings are introduction and features of butterfly valves with flanged connection, namely flanged...
Large Flanges used for Welding Metals with Good Thermal Conductivity
- Posted: 05/11/2015 01:05:48
- Hits: 350
The welding of large flanges can also be called large welded flanges. Two large welded flanges, between which gasket seal is inserted, can be used for connecting the end of one pipe to the end of another pipe. Bolts can be used through the holes of two welded flanges for fastening such two flanges....