There are two main processes for chemically treating the flange surface

There are two main processes for chemically treating the flange surface

There are two main processes for chemically treating the surface of flanges: one is high-temperature oxidation, which is often referred to as flanges; the other is blackening at room temperature. With the advent of the era of industrialization, the petrochemical industry, power industry, metal smelting industry, chemical industry and urban construction, etc., will increase the demand for valve products.

Structural features: For a long time, the general gate valves used in the market have generally suffered from water leakage or rust. The elastic seat seal gate valves are produced by introducing European high-tech rubber and valve (function: cut-off, diversion, voltage stabilization, diversion, etc.) manufacturing technology (Principle: move to fully open and fully close), overcome the defects of poor sealing and rust of general stainless steel (stainless acid-resistant steel) flange gate valves, elastic seat seal gate valves use elastic gates to produce micro elastic deformation compensation

To achieve a good sealing effect, the valve has significant advantages such as a light switch, reliable sealing, good elastic memory and long use time.

According to the fact that the volume of the metal does not change during plastic deformation and the wall thickness remains unchanged when the neck flange is formed, the actual slightly thinned flange outer arc length is equal to the length of the tube blank, and the formula for deriving the outer diameter of the tube blank is derived:

If the actual selection The outer diameter of the tube blank is smaller than the value calculated by the formula, and it has a good fit with the mold, but the inner arc of the flange is prone to instability and wrinkling. The part that connects the pipe to the pipe, is connected to the pipe end.

There are holes in the flange, and the bolts tightly connect the two flanges. The flanges are sealed with gaskets.

The factory has a group of qualified butt welding flange workers who can read drawings and produce qualified products. First of all, check the leaking part. In the leaking part, it is generally impossible to inject a sealant through the gap to eliminate the leakage due to the extremely small gap between the stainless steel flange connection.

Today, follow my technology to learn about marine flange standards and special-shaped flanges. Uses: The commonly used flange standards for marine flanges are national standard exhaust pipe steel flanges, national standard marine lap welding steel flanges, and four-digit national standard marine flanges.

Lap-welding copper flange, quaternary national standard marine lap-welding steel ring loose sleeve steel flange, quaternary national standard lap-welding steel flange, national standard lap-welding steel flange, national standard marine butt-welding steel flange, quaternary national standard marine flat round

Shaped cast iron and cast steel flanges, national standard butt welding flanges, marine flat and round welded steel flanges, national standard exhaust pipe steel flanges and gaskets, national standard marine aluminum pipe folded loose sleeve aluminum flanges, national standard marine Flat round welded steel flanges, national standard flat round cast iron and cast steel flanges, national standard lap welded steel flanges.

The national standard welded copper flange is different from the nominal diameter of the vessel cylinder of the butt welding flange and the nominal diameter of the pipe, so the container flange and the pipe flange of the same nominal diameter are different. The sizes are different, and the two cannot be used as substitutes for each other.

Sliding Flanges:

Sliding flanges have a lower tie due to the pipe entering the single flange before welding. There are two types of flat welding flanges: plate flat welding steel pipe flanges and neck flat welding steel pipe flanges. The appearance of the carbon steel tee is relatively smooth, with a better aesthetic feeling and the texture of the stainless steel flange, which allows users to have a good feeling during use. The welds of alloy steel flanges must be tested by ultrasonic or radiographic testing.