Socket Weld Flange Manufacturer & Supplier In China: Unmatched Quality And Precision.

Socket weld flanges are pipe bridging components installed in recessed areas of pipe fittings or flanges. Therefore, the accuracy requirements are higher.

  • It can replace threaded flanges, minimizing the risk of leaks.

  • No beveling is required before welding.

  • Welding work on the outside of the pipe will not penetrate the pipe hole.

  • It has the same internal pressure as sliding on the flange, giving it a better fatigue life.

What is Socket Weld Flange?

Socket weld flange is designed for small sizes of pipelines with diameter not more than 4 inch and are more common for 1/2 inch to 2 inch. This kind of flange has a sunken shoulder on one side in which the pipe can be inserted and welding on the top. This provides a smooth bore to allow the better flow of fluid or natural gas. Socket weld flange is considered similar to slip on flange.

Socket weld flange has a wide application range generally referring to chemical industries, shipping, petroleum, and natural gas etc. It is suitable for high pressure systems and pipeline systems with temperature from 20℃ to +200℃. Before proceeding the welding it is necessary to do some preparation such as selection of welding materials and technologies. Specially pay attention to assure the pipes and guarantee the welding quality.

Socket weld pipe flanges generally supplied with raised face, flat face, or ring joint face. Metleader manufactures socket weld flanges in many different materials including carbon steel, stainless steel and alloy steel. For common sizes such as 1 inch and 2 inch, which are stocked with large quantities, regular orders can be delivered at any time.

Classifications of socket weld flanges as standards

The production of socket weld flanges can be proceeded according to some international standards for example ASME B16.5 and JIS.

ASME B16.5 socket weld flange

ASME B16.5 socket weld flange is the most commonly used standard in the world. It is usually manufactured or supplied in different classes, CL150, CL300, CL600, CL900, CL1500 and CL2500. This flange is majorly for the application of small size of pipes.

JIS B2220 socket welding flange

JIS B2220 socket welding flange is one major type of all JIS flanges. The production pressures include 5K, 10K, 16K, 20K and 30K, “K” means Kilogram. Socket welding flanges are not suitable for the pressures above 30K and their sizes are from 10A to 80A.

Classifications of socket weld flanges as sealing faces

Raised face (RF) socket weld flange

Raised face (RF) socket weld flange is the most common produced by flange factories. This kind of sealing face allows the use of a variety of gaskets including flat ring type and metallic composite, such as spiral gasket, flat gasket PTFE etc. The goal of socket weld flange RF type is to concentrate the pressures on the small areas of flanges to improve the sealing strength.

Ring joint (RTJ) socket weld flange

Ring joint (RTJ) socket weld flange is considered a strengthened sealing face of RF. There is a ring groove in the raised face where a backup ring can be placed to obtain better sealing performance. RTJ type due to its special feature is usually applied to high pressure flanges with CL600, CL900, CL1500 and CL2500. And it is very suitable for high temperatures as well.

Features

Reducing leakage rise

Socket weld flanges can be used for replacing threaded flanges to reduce the leakage risk.

Welding advantage

No need to do bevel end before welding and can’t destroy the pipes because the welding work is proceeded outside of the pipelines

Long working life

Socket weld has good fatigue life since it can avoid flange surface damage and welding thermal deformation during welding.

Cost-effectiveness

Socket weld flanges have cost advantages because they are easy to produce and the welding process is fast and simple.

Socket Weld Flanges Applications

Application industries Functions
Pipeline system Connection for the pipes and fittings in the pipeline system.
Industrial application Apply to a variety of industries, such as petroleum and gas, chemical and power plants.
Thermal Engineering Condenser, heat exchanger, engine blade.
Ship building Operation pipes, Submersible, gas cylinder.
Sea engineering Evaporator, heat exchanger, exchanger, oil production platform, oil cooler.
Chemical industry Late heat exchanger, plate condenser, cooling tower, chlorination tank.
Aerospace  Engine, fan plate, gas compressor blade, frame, hatch cover, tail.

Slip on flanges Customization

Slip on flanges are widely used for the pipeline connections of petroleum & gas, petrochemical, water engineering, ship building, seawater cleaning, construction etc.

Comparisons

  • Famous steel pipe factories TPCO, Bao Steel etc

  • Production test – 100% test

  • Non-conforming products – Reject

  • NDT – 100% inspect

  • Customized service – available

  • Final inspection – 100% inspect

Other supplier

  • Local small factories raw material

  • Sampling test

  • Non-conforming products: Repair

  • Sampling test

  • Not sure

  • Sampling test

Quality Assurance

1) Raw material testing: Conduct chemical analysis and inspection of flange raw materials and retain the certificate

2) Cutting and blanking: Cut the raw materials into forged blocks of different sizes according to the specifications of the socket weld flange.

3)Tensile properties: hardness index (specified non-proportional elongation stress, specified total elongation stress, specified residual elongation stress, yield point, tensile strength)

4)Finished product inspection: Inspect the size and appearance of the finished flange

5)Surface treatment: Clean and anti-rust the flange surface.

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