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Anti-corrosion Technology of Oil and Gas Pipeline's Flanges and Bolts (Part One)
- Posted: 08/09/2021 10:08:39
- Hits: 174
Abstract In the operation of oil and gas pipelines, flanges and bolts are often damaged by metal corrosion, which seriously affects their overall safety. Six mainstream anti-corrosion systems and their basic construction methods at home and abroad are introduced and analyzed, and their advantages...
Reasons for Cracks of Flanges
- Posted: 07/26/2021 11:07:43
- Hits: 612
A flange is a commonly used component in the pipeline. When a flange is connected to the pipeline, the welding is often adopted. However, if welding is not done properly, it will cause cracks between the flange and stainless steel pipe. Then, why do cracks appear for a flange in the welding process?...
The Research Method of Tightness of Bolted Flanges
- Posted: 05/10/2021 10:05:55
- Hits: 27
Sealing and leakage of bolted flanges In the past, people thought of the bolted flange connection being completely sealed or no leakage at the joint as that the pre-tightening pressure force on the gasket in the pre-tightened state cannot be less than the pre-tightened seal specific pressure y of the...
An Introduction to Flanges' Connections
- Posted: 04/06/2021 02:04:59
- Hits: 413
Flanges should not only meet the requirements for strength but also leakage rates when working. In addition, they should also have characteristics of convenient assembly and disassembly, low economic costs and good interchangeability. As shown in the Figure 1-1, the bolted flange...
A Brief Introduction to Butt Welding Flanges
- Posted: 03/08/2021 09:03:58
- Hits: 452
A butt welding flange is a kind of pipe fitting, which connects to the pipe. A butt welding flange is not easy to deform, has good sealing performance and wide applications. It is suitable for pipelines with large fluctuations in pressure or temperature as well as high-temperature, high-pressure...
Technical Requirements for Flange Connections
- Posted: 01/19/2021 02:01:36
- Hits: 320
Generally, pipe flanges are only used for connecting flanged valves, instruments and equipment. Except the equipment that needs to be disassembled during maintenance, others had better not be connected with flanges. Excessive use of flanges will increase the possibility of leakage...
Large-diameter flange anti-corrosion construction & characteristics
- Posted: 07/03/2020 06:07:37
- Hits: 139
Large-diameter flanges are widely used in machinery, chemical industry, wind power, sewage treatment and other industries, and are well received and favored by users. Large-diameter flanges are widely used. The production technology of large flange is divided into rolling and forging. Extra large flanges...
The Production Techniques of Flanges
- Posted: 09/29/2018 05:09:10
- Hits: 914
The production techniques of flanges fall into four major types: forging, casting, cutting, rolling. Cast Flange Pros: Precise, sophisticated shape and size light workload low cost Cons: Defects such as...
7 types of flange contact faces
- Posted: 05/31/2018 05:05:22
- Hits: 189
The basic contact faces of flanges are flat faces, raised faces, male faces, female faces, tongue faces, groove faces and RTJ faces. The selection of contact faces of flanges is different based on working conditions, media, pressure, specifications, temperatures and other conditions. Let's...
The Most Common Problems of Flanges
- Posted: 10/24/2017 11:10:26
- Hits: 437
There are big differences between the modern industry and the traditional industry. Most current production is the continuous production, which requires the equipment to have great workload and brings various kinds of problems to equipment and machinery at the same time. The flange is a very important...
Surface Treatments of Stainless Steel Flanges
- Posted: 10/12/2017 03:10:14
- Hits: 67
Stainless steel is a very common material for flanges, and the commonly used surface treatments of stainless steel flanges include surface clear whitening treatment, surface mirror brightening treatment and surface coloring treatment. Surface clear whitening treatment Stainless steel flanges have to...
How to Promote the Development of the China's Flange Industry?
- Posted: 09/27/2017 11:09:09
- Hits: 71
In the past 15 years, China's economy has been in the rapid and stable development and China has been in the midst of industrialization, forming a very good foundation for many industries. On the one hand, the demand for equipment machinery is becoming great, and the strategic objective of...