JIS B2220 JIS B2238 Welding Neck Flange 5K 10K 20K

Short Description:

Name:Welding Neck Flange
Standard:JIS B2220 JIS B2238
Material:Carbon Steel/ Stainless Steel
Specifications:5K 10K 20K 2"-12" 50A-300A
Connection mode:Welding
Production method:Forged
Acceptance: OEM/ODM, Trade, Wholesale, Regional Agency,
Payment: T/T, L/C, PayPal

Any inquiries we are happy to reply, please send your questions and orders.
Stock Sample is Free & Available

Product Detail





Product Tags



Welding Neck Flange
Standard ANSI ANSI B16.5, ASME B16.47 series A/B
DIN Germany 6bar, 10bar, 16bar, 25bar, 40bar
GOST GOST 12820/12821/12836
EN1092-1 EN1092-01/05/11/12/13
JIS JIS B 2220-1984, KS B1503, JIS B 2216
BS4504 BS4504 BS10 Table D/E
Items Plate, Welding Neck, Slip on, Blind, Socket Welding, Lap joint, Threaded Flange etc.
Material ASTM A105 ST37.0 A350 LF2 A694 F60 A694 F70 SS304 SS321 SS316
Nominal Pressure class150 PN16 PN10
Applicable Medium oil,gas,water or other medium;
Technology Forge&CNC machining
Delivery Time 15-60 days
Payment Term FOB,CIF
Packaging Plywood cases

jis 5kjis 10k

jis 16kjis 20k

Product Introduction

The sealing surface forms of the neck butt welding flange include:
RF, FM, M, T, G, FF.
The connection is not easy to deform, the sealing effect is good, and it is widely used. It is suitable for pipelines with large fluctuations in temperature or pressure, high temperature, high pressure and low temperature, and also for pipelines transporting expensive media, flammable and explosive media, and toxic gases.
The neck butt-welding flange is bulky, bulky, expensive, and difficult to install and locate, so it is easier to bump during transportation.

There are two standard systems for the neck butt welding flange in China: one is the European system, and the other is the American system. The maximum pressure resistance of the neck butt-welding flange in the European system is 25Mpa, and the maximum pressure resistance in the American system is 42Mpa.

Butt-welding flange is also called high neck flange. It is different from flat welding flange in that there is a long and inclined high neck from the welding point of flange and pipe to the flange plate. The wall thickness of this section of high neck gradually transits to the pipe wall thickness along the height direction, which improves the discontinuity of stress and thus increases the flange strength.

Butt-welding flanges are mainly used in situations where the working conditions are relatively harsh, such as situations where the stress at the flange is large or the stress changes repeatedly due to the thermal expansion of the pipeline or other loads, pipelines with large fluctuations in pressure and temperature, or pipelines with high temperature, high pressure and low temperature below zero. Butt-welding flange is not easy to deform, has good sealing, and is widely used. The nominal pressure is PN1.0MPa~PN25.0MPa.

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    1.Professional manufactory.
    2.Trial orders are acceptable.
    3.Flexible and convenient logistic service.
    4.Competitive price.
    5.100% testing,ensuring the mechanical properties
    6.Professional testing.

    1.We can guarantee the best material according to related quotation.
    2.Testing is performed on each fitting before delivery.
    3.All packages are adapt for shipment .
    4. Material chemical composition is conformed with international standard and environment standard.

    A) How can I get more details about your products?
    You can send an email to our email address. We will provide catalogue and pictures of our products for your reference.We can also supply pipe fittings, bolt and nut, gaskets etc. We aim to be your piping system solution provider. 

    B) How can I get some samples?   
    If you need, we will offer you samples for free, but new customers are expected to pay express charge. 

    C) Do you provide customized parts? 
    Yes, you can give us drawings and we will manufacture accordingly. 

    D) To which country have you supplied your products?
    We have supplied to Thailand, China Taiwan, Vietnam, India, South Africa, Sudan, Peru , Brazil, Trinidad and Tobago, Kuwait, Qatar, Sri Lanka, Pakistan, Romania, France, Spain, Germany, Belgium, Ukraine etc. (Figures here only include our customers in latest 5 years.). 

    E) I can’t see the goods or touch the goods, how can I deal with the risk involved?  
    Our quality management system conforms to the requirement of ISO 9001:2015 verified by DNV. We are absolutely worth your trust. We can accept trial order to enhance mutual trust.

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