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Flange

Product Description

Flange is the component used for pipe end connection, also for equipment connection. Flanges and its gasket, fastener, all called flange joint. Flange is widely used in engineering, it's the necessary part for pipe and valve. And industrial furnace, heating project, water treatment industries also use flanges.

Material:

Forged steel, WCB, SS304, SS304L, SS316, SS316L, SS321, chromium-molybdenum steel, mo-ti steel, rubber lining, PTFE lining, etc..

Classification:

Flat flange, weld neck flange, socket flange, blind flange and screw flange, etc.

Standard:

National standard(GB), ASME(American standard), BS(British standard), DIN(German standard), JIS(Japanese standard).

In international market, ASME, BS, DIN and JIS are widely used, GB are most used in China.

Widely Used Flanges Type
1. Flat type flanges

Chinese standard GB/T9119, HG20592,JB/T81.

Advantages: Easy manufactured, lower cost, widely used.

Disadvantages: Stiffness is not good, sealing face has flat and convexity.

2. Flat welding flanges

It is one of the flange type in National standard, it's widely used in the world.

Advantages: Easy installation.

Disadvantage: Weld neck is short, stiffness is better than flat flange, but cost is more than flat flange. But hard to weld, cost more welding rod.

3.Welding neck flanges

Thre are RF, FM, M,T, G and FF face.

Advantages: Sealing is better than others, most used for high temperature and high pressure pipes and gas, oil medium.

Disadvantages: Dimension and weight is large, price is much higher, hard to install.

4.Integral flanges

Integral flange is one of connection type. It is also belong to Weld neck flanges. Material is carbon steel, stainless steel, ductile iron, etc..

It is used for higher pressure pipeline.

5. Socket flanges

Socket flanges is one side weld with pipe, the other side connected by bolts and nuts.

Sealing: RF, MFM, TG, RJ.

Application: Pressure vessel, oil, chemical, pharmacy, metallurgy, machinery, etc..

6. Screw flanges

Screw flanges inner are screw type, and connected with screw pipe. Needn't welding when installation.

Advantages: Easy to install and repair.

Disadvantages: Only can be used for -45℃ to 260℃.

7.Blind flanges

Also called flange cover, blind. It is used for block pipe or valve.

Sealing face: FF, RF, MFM, TG, RJ.

Product Details
Solid forging, no welding line.
You can choose galvanization or coating.
Various types, we accept custom-made.
Digital controlled lathe, accurate dimension, no flawless.
Application

Workshop

Our Service
Pre-sale Service:
1. According to product’s using condition, technicians will offer rationalization proposals to assist clients to select proper types;
2. Provide detailed product performance specification;
3. Provide professional quoted price;
4. Provide 24-hour technical consulting reply.
In-sale Service:
1. Begin to supervise from raw material, its qualified rate can reach to 100%;
2. Whole manufacturing process are in strict accordance with promised procedure requirements, product qualified rate can reach to 100%;
3. Provide product’s inspection record of key junctures to customers;
4. Provide production schedule photos to customers at regular intervals;
5. Package and transport products strictly accordance with export standard;
After-sale Service:
1. Under the premise of correct installation, normal maintenance and using, we guarantee one-year warranty period;
2. When warranty period has expired, our sold products enjoys lifetime guarantee repair, we only charge cost price for changing product’s standard component and sealing component;
3. During installation and adjustment period, our after-sale service staff will communicate with customers frequently to know product’s running state in time. Assist customers to install and adjust products until customers are satisfied;
4. If product has malfunction during operation period, we’ll offer you satisfied answer in time. We’ll reply you within 1 hour and provide solution or send staff to spot within 24 hours after receiving maintenance notification.
5. Lifelong free technical support. Conduct satisfaction survey and inquiry equipment running condition to clients by telephone or e-mail semiannually from the first day of equipment running, put on records of acquired information.
FAQ
1.What diameter can you provide?
Our company can manufacture DN25-DN4000mm standard and non-standard flanges as your requirements.
2.Can you provide material certificate?
Yes, we can.
3.Do you accept third party inspection?
We accept third party inspection.
4.How long is the product guarantee period?
One year.
Package & Shipping
Flange is protected with pad, avoided surface tear.
Use film to prevent water and moisture.
Encasement.
Fixed by steel belt.
Advantages
1. Raw material is purchased from qualified manufacturer, high quality.
2. Flange is solid forged, available for flaw detection.
3. Supervise every production procedure and every detail.
4. Sufficient raw material storage, deliver products in time.
5. Cooperate with universities and colleges, guaranteed advancement of product technology.
Summary

Flange is the component used for pipe end connection, also for equipment connection. Flanges and its gasket, fastener, all called flange joint. Flange is widely used in engineering, it's the necessary part for pipe and valve. And industrial furnace, heating project, water treatment industries also use flanges.


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