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Principle of Flange Sealing
- Posted: 06/14/2016 02:06:32
- Hits: 63
Factors that affect flange sealing are various. Mainly include: bolt preload; sealing surface; flange gasket performance; stiffness;operating conditions. For decades, the ANSI flange, which designed by the American National Standards Institute, has provided a suitable sealing technology...
Differences between Slip-on Flange and Welding Neck Flange
- Posted: 05/31/2016 02:05:23
- Hits: 7672
There are some different points between Slip-on Flange and Welding Neck Flange. 1.Connection mold of centrifugal pump flange: The biggest difference between slip-on flange flange and welding neck flange on structure in that the difference between joint pipe and connection way of flange. Generally, the...
Latest Standard for Forging Blind Flanges and Applications
- Posted: 03/03/2016 05:03:49
- Hits: 111
Major function of blind flanges is working as the connection between pipelines and the connection of blind flange is to link pipes, pipefitting and equipment, and fixed on the flange. Firstly, install the blind flange and then fixed flanged with bolts, this is the process of connecting flanges. Some...
Factors that Cause Flange Sealing Leakage in Refinery
- Posted: 02/27/2016 05:02:03
- Hits: 180
Flanges are the most common connection components between refinery equipment and pipes. Most materials in refinery are poisonous, flammable and corrosive, once the sealing of flange is invalidated, these dangerous materials will be leaked out and cause severe fire and injuries and deaths. Therefore,...
Requirements for Large-diameter Welded Flange
- Posted: 01/02/2016 06:01:12
- Hits: 277
First, the level and technical requirements of large-diameter welded flange should comply with the relevant requirements of JB4726-4728. 1. Grade Ⅰ forging is allowed to use in carbon steel forgings and austenitic stainless steel forgings with nominal pressure among 0.25PM to 1.0MPa. 2. Forging, whose...
Cleaning Problems of Carbon Steel Flanges
- Posted: 12/07/2015 08:12:15
- Hits: 210
1. Rinsing Pollution After quenching the fasteners, use silicate to clean and rinse them. If there were some solid matter on the surface, and found to be iron oxide and inorganic silicate by infrared spectroscopy, this was due to the incompletely rinse and silicate was remained on the fastener surface....
How to Prolong the Service Life of Large Flange
- Posted: 11/25/2015 06:11:13
- Hits: 191
There are many factors for the service life of large flange. Due to the high viscosity of the flange material and poor chip breaking performance, it is easy to have problems in the tapping process, affecting its processing efficiency and thread quality. Such as: chip scratches workpiece thread or tap...
Differences between Flat Weld Flange and Butt Weld Flange
- Posted: 11/19/2015 09:11:18
- Hits: 1101
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. Flat...
Production and Processing of Flat Weld Flange
- Posted: 10/26/2015 08:10:46
- Hits: 243
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 and welded...