Flange cover

Flange cover is also called blind flange and blind plate. It is the flange without hole in the middle for sealing the pipe plug. The role of welded head and screw cap is the same, but the flange cover and screw cap can be unloaded at any time, while the welded head can not.

Product Information

Product Features

1. Strict selection of materials
Strict selection of raw materials, rigorous workmanship, high pressure, corrosion resistance, high temperature resistance

2. Product quality inspection
Strict quality inspection of each flange cover product, quality inspection after passing the shipment.

3. Complete specifications
Can produce different specifications to meet the different needs of customers.

Production process

There are generally four types: forging, casting and forging, center plate cutting and casting. Among them, the price of forging products is high, followed by center plate, casting and forging is low. And casting is the second one kind of process. And the quality is forging and center plate is good, casting and forging to be slightly worse.
　　

The application parts of the flange cover

1, the original drive preparation stage, in the pipeline strength test or tightness test, can not be connected with the equipment (such as turbine, compressor, gasifier, reactor, etc.) at the same time, the need to set up in the equipment and pipeline connection blind.

2、All kinds of process material pipelines connected to the boundary area outside the boundary area, when the device is stopped, if the pipeline is still in operation, set up a blind plate at the shut-off valve.

3, the device for more than one series, from the boundary area outside the main pipeline is divided into if the thousands of sub-pipes into each series, in each sub-pipeline shut-off valve set at the vernier.

4, the device to regular maintenance, inspection or mutual switching, the equipment involved in the need for complete isolation, set up blind at the shut-off valve.

5, charging pipeline, replacement gas pipeline (such as nitrogen pipeline, compressed air pipeline) process piping and equipment connected to the shut-off valve set up at the vermicular plate.

6, equipment, piping, low-point discharge, if the process media need to be concentrated to a unified collection system, set up after the shut-off valve blind.

7, equipment and pipeline exhaust pipe, liquid discharge pipe, sampling pipe in the valve should be set after the blind or silk plug. Non-toxic, non-health hazards and non-explosive hazardous materials are excluded.

8、When the device is constructed in stages, the interconnected pipelines should be equipped with verticle plates at the shut-off valve for subsequent construction.

9, device normal production, need to completely cut off some auxiliary pipeline, generally should be set up flange cover.