The difference between flaring, ferrule and welding pipe joint

Flared type pipe joint: Flared type pipe joint Applicable medium: Oil, water, gas and other non-corrosive or corrosive medium pipe joints. The specifications of the steel pipe used are relatively flexible. After welding with the pipe, it has a reliable connection and sealing performance. Good characteristics, so it is widely used in oil refining, chemical industry, light industry, textile, national defense, metallurgy, aviation, shipping and other systems; also suitable for various mechanical engineering, machine tool equipment and other hydraulic transmission lines.

Card sleeve type pipe joint: The working principle of the card sleeve joint is to insert the steel pipe into the card sleeve, and use the nut of the card sleeve to lock against the card sleeve, cut into the tube and seal. It does not need to be welded when connected to the steel pipe, which is beneficial to fire prevention, explosion-proof and aerial work, and can eliminate the disadvantages caused by careless welding. Therefore, it is a relatively advanced connector in the pipelines of automatic control devices in oil refining, chemical, petroleum, natural gas, food, pharmaceutical, instrumentation and other systems. Suitable for oil, gas, water and other media pipeline connection. The card sleeve joint has the characteristics of reliable connection, high pressure resistance, temperature resistance, good sealing and repeatability, easy installation and maintenance, safe and reliable work. Welded pipe joints: Welded pipe joints Applicable medium: non-corrosive or corrosive media such as oil, water, gas, etc. For welded sealed pipe joints, the specifications of matched steel pipes are more flexible, and after welding with pipes, they have a reliable connection It has good sealing performance and other characteristics, so it is widely used in oil refining, chemical industry, light industry, textile, national defense, metallurgy, aviation, shipbuilding and other systems; it is also suitable for various mechanical engineering, machine tool equipment and other hydraulic transmission lines. When the production of ferrule type pipe joints can not meet the needs, and in the occasions with strong corrosion, it can be given priority.

On a daily basis, the "card set" interface may be more convenient for replacement and maintenance. However, the choice of the general interface mainly depends on the needs of the materials and media used.

1. The materials of general ferrule joints are carbon steel, copper and stainless steel. The correct selection of materials can achieve the best price-performance ratio. The price mainly depends on the purchase price. The connection of steel pipe joints is ferrule type, and the joints of copper pipes are generally It adopts flaring type and slub type, all of which can be checked.

2. The chemical properties of different fluid media are different. The service life of the card sleeve joints of different materials under different fluid medium conditions is also different.

3. The comprehensive price, the service life of the card sleeve joint (determining the frequency of replacement), and the sealing performance under the same pressure conditions determine the best price-performance ratio.