GOST Flanges 12820-80

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China Main Port
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TT or LC
Min Order Qty:
1 Ton m.t.
Supply Capability:
9000 Tons per Year m.t./month

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Detailed Product Description

ASTM A105, A182, A350, A694, ST35.8, ST45.8, ST37.2, C22.8, SS400, SM400B, 20Mn, 20 #, Q235, 16Mn, F304/304L, F316/316L, F321,

Professionally export,designed, produced and sold such as ANSI/ASME,MSS,JIS B2220,DIN,B.S.,EN1092,GOST,UNI,AS2129,SHIP,GB,HG,SH,SHJ,SGJ standard forging flanges,Plate flanges,Welding neck flange,Blind flange and flange buttons.


The main material for carbon steel, stainless steel and alloy steel, such as ASTM A105, A182, A350, A694, ST35.8, ST45.8, ST37.2, C22.8, SS400, SM400B, 20Mn, 20 #, Q235, 16Mn, F304/304L, F316/316L, F321, LF2,F11/42/46/52/60/65, 15CrMo, 12Cr1MoV such.


The production base total area is about 82,300 square meters.The annual production capacity is more than 9000 tons, with fine processing technology and advanced detection means.


The company has passed Rhine, Germany(TüV) ISO9001 quality management system certification , European pressure equipment  and materials PED97/23/EC certification and German pressure equipment  and  materials AD2000-WO certification. It has also passed the pressure pipe components manufacturing safety registered certification of the State Quality Inspection Administration and classification societies certified .So a more effective guarantee is provided for the quality of the products.It has become the one of the enterprises  firstly through the certification in the industry.It plays an important leading role in the industry.


The high-quality products are widely used in petroleum, chemical, metallurgy, electric power, ship, natural gas , pipeline industries and so on.It has won the users good evaluation.At the same time,the products are exported to Europe and the United States, the Middle East, Africa and South-East Asia regions and other countries.


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Q:What do you mean, flange four?
In the past, there were four carry and six carry flanges in the flange standard, which meant only the number of bolted flanges, and the number of bolts in the 4 carry flange was 4 multiples, such as: 4, 8, 16., six, and 6, 12, 18.
Q:PN40 valve flange surface using RF or FM?
PN40 valve flange surface default FM, and if you use RF, you must note.
Q:Where is the flange used in the pump?
Where the inlet and outlet and the valve are located, where the sensor flowmeter is located, flanges are used where the pipe and other equipment are joined
Q:What about the flange cap and the blind plate?
It seems a bit different. The flange cap is provided with flanges at one side, while the blind plate may have flanges on both sides.
Q:Why is there only one gasket between the two flanges?
Plus two, there's a gap. The phenomenon of leakage is easy to produce. Flange is a sealed pipe fittings. Having rubber, asbestos, or metal.
Q:Hubbed flange 2 "ANSI #150 is what size?
ANSI B16.5 American Standard looper flange class pressure level
Q:What do you mean by "RF", "A" or "B" in the flange?
That is to say, the size of the outer diameter of the pipe
Q:What do you mean by flange Pg16 Dg100?
That should be PN16DN100. The pressure is 16 kg. Nominal diameter DN100 pipe outer diameter 108 flange inner diameter 110
Q:What do you mean by flange 2''3'' 4''?
It should correspond to DN50, DN80, DN100 flanges
Q:What does "flange PL25-16" mean? Can you point out the meanings separately?
PL is a representative of welding plate flange general customers list at PL25-16 are basically refers to the flange of the Ministry of Chemical Industry Ministry of machinery usually hit the flange flange DN25 PN16. Ministry of chemical industry is not the car linePL welding plate flange 25 diameter pipe diameter of 32 flange diameter of 3316 represents the flange pressure of 16 kgThe Ministry of chemical standards refer to the European system of HG/T20592-1997 or HG/T20592-2009
Our company has strong professional technical force, rich experience, integrated data and advanced equipment, as well as high-quality forging, machine-processing, assembling and packing production lines. Our product quality is in full compliance with both national and international standards, and we have obtained the ISO9001-2000 quality certification. Warmly welcome all to come to visit, investigate and negotiate business.

1. Manufacturer Overview

Location Shandong,China
Year Established 2008
Annual Output Value
Main Markets North America
South America
Eastern Europe
Southeast Asia
Mid East
Eastern Asia
Western Europe
Central America
Northern Europe
Southern Europe
Company Certifications ISO9001:2008

2. Manufacturer Certificates

a) Certification Name  
Validity Period  

3. Manufacturer Capability

a)Trade Capacity  
Nearest Port qingda
Export Percentage 81% - 90%
No.of Employees in Trade Department
Language Spoken: English, Chinese
b)Factory Information  
Factory Size: 10,000-30,000 square meters
No. of Production Lines 10
Contract Manufacturing OEM Service Offered Design Service Offered Buyer Label Offered
Product Price Range Low and/or Average