www.lpipe.com：Stainless steel pipe fittings manufacturer

High pressure fittingsThe literal meaning is a fitting that can withstand higher pressure.

The chemical standard refers to the pipeline that can withstand pressure ≥ 16MPa as high-pressure pipeline. One of the fittings that can act on the high-pressure pipeline is called high-pressure fittings. Our steam equipment, high-temperature pipelines, power plants, nuclear power plants, high-pressure boilers and other pipelines are all in need of such high-pressure fittings to connect.

High pressure fittings for

Category:

1. High pressure elbow

2. High Pressure Tee 

3. High pressure flange 

4. High pressure reducer 

5. High pressure pipe cap

6. High pressure branch pipe holder 

7. High pressure head 

8. High pressure hose clamps

High-pressure pipe fittings are made of a variety of materials of which the most commonly used is carbon steel, alloy steel, stainless steel, brass these four categories, they account for almost the entire pipe fittings industry more than 80%, other raw materials accounted for 20%.

Material of high pressure pipe fittings.

P11, P91, WEB36, 20G, 20MnG, 25MnG. 15MoG, 20MoG, 12CrMoG, 15CrMoG, 12Cr2MoG 12CrMoVG, 12Cr3MoVSiTiB 1Cr18Ni9, 0Cr18ni9, 1Cr18Ni11Nb, etc.

High pressure fittings for

Connections:

1. Welded connections

2. Fillet connection

3. Bolting

Characteristics of high pressure pipe fittings

1. The physical and chemical properties of high-pressure fittings are outstanding. Since it needs to be able to withstand large pressures, they must be processed through a series of precision processes in order to have this effect. The high-pressure fittings processed through various processes have very strong characteristics so that it can be used inside high-pressure pipelines.

2. High pressure fittings generally have excellent characteristics such as high temperature resistance, corrosion resistance, oxidation resistance, abrasion resistance, easy installation and disassembly, ability to mass produce, low production cost, etc.

3. Discarded or unsuitable high-pressure fittings can be melted down and recycled twice. Since most high-pressure fittings are made of iron, they can be melted down and converted into liquid, which can be injected into the mold again to form the finished product. For some oxidized or corroded high-pressure fittings, they can be polished and then melted.

4. High pressure pipe fittings are very widely used. It is widely used in chemical industry, petroleum, natural gas, precision manufacturing, shipbuilding, machinery manufacturing, chemical industry, water transmission, construction pipeline construction, paper mill and other fields.

Industry standards for high pressure fittings

• (1) "Steel Butt-welded seamless pipe fittings" GB/T 12459-2005

• (2) "Steel plate butt weld pipe fittings" GB/T 13401-2005

• (3) "Power Station Steel Butt Weld Pipe Fitting" DL/T 695-1999

• (4) SH 3408 seamless steel butt-weld fittings SH 3409 steel plate butt-weld fittings

• (5) SH 3410 socket weld fittings made of forged steel

• (6) HGJ514-87 carbon steel, low alloy steel seamless butt weld pipe fittings

High pressure elbow

High-pressure elbow is a kind of pipe fitting used to make different angle turns at the bend of high-pressure pipeline. Among all the pipe fittings used in high-pressure piping systems, the largest proportion is about 80%.

High-pressure elbow is a kind of pipe fittings used for high-pressure pipeline bend to make different angle turns. In the high-pressure pipeline system used in all the pipe fittings, the largest proportion, about 80%. generally high pressure elbow wall thickness than ordinary elbow to be thicker, or material strength of high pressure resistance than the strength of the ordinary elbow to be higher. There are butt welding and socket welding and fillet connection in three ways. High pressure elbow high pressure resistance is generally applicable to the pipeline series of oil, natural gas, aerospace, marine, chemical, hydropower, fire, construction and boiler industries.

The production process of high-pressure elbow first welded a polygonal cross-section of the polygonal ring shell or closed at both ends of the polygonal sector shell, the internal punching full of pressure media, the application of internal pressure, under the action of internal pressure cross-section from polygonal gradually become round, and finally become a circular ring shell. According to the need, a round ring shell can be cut into four 90 elbows or six 60 high-pressure elbows or other specifications of high-pressure elbows, the process is suitable for manufacturing high-pressure elbow diameter and stamping elbow inner diameter ratio greater than 1.5 any specification of large elbows, is the ideal method of manufacturing large national standard elbows.
High pressure elbow is suitable for oil, gas, chemical, water and electricity, construction and boiler pipeline system. Do not need billet as raw material, can save the cost of pipe making equipment and molds, and can get any large diameter and relatively thin wall thickness of the national standard elbow. Due to the above two reasons, you can shorten the manufacturing cycle, production costs are greatly reduced. Because it does not require any special equipment, especially suitable for on-site processing of large national standard elbow. The blank is flat or expandable surface, so the material is simple, easy to ensure the accuracy, assembly and welding convenience.

High pressure fittings

The share of domestic development over the years?

Metal pipe fittings industry in China for nearly 30 years, by the end of 2010, the country's oil pipeline and pipe fittings manufacturing, natural gas pipeline and pipe fittings manufacturing, municipal engineering pipeline and pipe fittings manufacturing and insulation, the

Pipe fittingsThe number of manufacturing enterprises has exceeded 4,000, of which those engaged in the manufacture of metal pipe fittings has also reached more than 1,900. However, among these metal fittings manufacturing enterprises, a large number of small and medium-sized enterprises are included, which have problems such as low production technology and lack of core technology, and are often restricted to engage in general metal fittings manufacturing. However, the capacity of the market is mainly concentrated in the manufacturing of high-end metal pipe fittings by the amount standard.

Distinguished from the pressure, high-pressure pipe fittings production business only accounts for 35% of the total number of enterprises in the entire metal pipe fittings industry, but created 60% of the industry's total output value.

High-end pipe fittings whether in the molding technology, welding technology, heat treatment technology, testing technology, design level, there is greater room for improvement.

With the refinement of the social division of labor, the downstream industry towards high precision development in pursuit of social and economic benefits of the win-win situation, the technical requirements of the pipe fittings products continue to improve, making the market demand for high-end pipe fittings is also growing.

With the development of ultra-high pressure industries such as power steam piping, chemical high-pressure piping, high-pressure pressure vessels, high-pressure boilers, and nuclear power plants, high-pressure pipe fittings are also advancing at a rapid pace.