JIS B2220 JIS B2238 Welding Plate Flange 5K 10K 20K 50A-300A

Short Description:

Name:Slip on Plate flange
Standard:AWWA C207, JIS B2220, BS 3293, SANS 1123
Material:Stainless Steel, Carbon Steel
Specifications:1/2"-24" DN15-DN1200
Scope of application: PN2.5~PN40; Class150~Class1500
Connection mode:Welding
Production method:Forging
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

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Product introduction

Flat welding flange refers to a flange connected with vessels or pipes by fillet weld. There are two types of flange ring: with neck and without neck. Compared with the neck butt welding flange, the flat welding flange has simple structure and low material consumption. The flat welding flange is widely used for the connection of medium and low pressure vessels and pipelines.


1. The flat welding flange not only saves space and reduces weight, but also ensures that the joint will not leak and has good sealing performance. The reason why the size of the compact flange is reduced is that the diameter of the seal is reduced, which will reduce the section of the sealing surface.
2. The flange gasket has been replaced by the sealing ring to ensure that the sealing face matches the sealing face. In this way, only a small pressure is required to compress the sealing surface.
3. Flat welding flange is a relatively high-quality flange product, which reduces the quality and space and plays an important role in industrial use.

Material and Process

Stainless steel flange: ASTM A182 F304, 304L, F316, 316L 

Production processes: sawing, heat treatment, die forging, machining


PN0.25MPa, PN0.6MPa, PN1.0MPa, PN1.6MPa, PN2.5MPa,PN4.0MPa


JIS B2220

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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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