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Large Diameter Flat Flange

flat welding flange refers to a flange that is connected with a container or pipeline by fillet welds. It is an arbitrary flange. When designing, according to the integrity of the connection between the flange ring and the straight cylinder section, check according to the integral or loose flange respectively.

Flange rings are available with or without a neck. Compared with the butt welding flange with neck, the flat welding flange has a simple structure and saves materials, but the rigidity and sealing performance are not as good as that of the butt welding flange with neck. Flat welding flanges are widely used in the connection of medium and low pressure vessels and pipelines.

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Product Details

Flat welding flanges are suitable for pipeline systems with relatively low pressure levels and no serious pressure fluctuations, vibrations and shocks. The advantage of the flat welding flange is that the flat welding flange is easier to align during welding and assembly, and the price is relatively cheap, so it has been widely used.

Reference Standard

Plate Flat Welded Steel Pipe Flanges

Ministry of Chemical Industry Standard:

HG20593-2009

HG20615-2009

National standard: GB/T9119-2010

GB/T2555-81

Mechanical Department Standard: JB/T81-94

JB/T74-94

JB/T75-94

Marine Standard:

Large flat welding flange

CB M1001-81

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

Product Category Full Flat Panel Flange (FF), Raised Panel Flange (RF)

Manufacturing materials stainless steel (304, 316, etc.), carbon steel (20# 25#, etc.)

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Product Parameter：

Cetificates		SGS, GB/T19001-2016/ISO9001:2015, Material Cert, etc.
Capabilities		3D printing, CNC machining, Mold manufacturing, Injection Molding, etc.
Drawing, File Formats		SolidWorks, Pro/Engineer, STP, IGS, STEP, AutoCAD(DWG, DXF), PDF, JPG, etc.
Machinable Tolerance		±0.005mm, 100% QC inspection before delivery, providing test report
Heat Treatment		Quenching, Tempering, Annealing, Normalizing, etc. (Rockwell Hardness)
Surface Treatment		Powder Coating, Painting, Zinc/ Chrome/ Nickel Plating, PVD, Polishing, Brushing, Sand Blasting, Anodizing, Passivating, Rubber Coating, etc.
Logo, Color, Grain		Customizable (Pantone Color Card, AI Vector Picture)
Quality Control		CMM, Projector，Image Measurement Instrument, Tool Microscope, Marble Platform, Roughness Measurement, Hardness Tester, Salt Spray Tester, Micrometer, Automatic Height Gauge, Go-No Go Fixed Gauge, Micrometer, Vernier Caliper, etc.
Package		Wooden Pallet/ Wooden Case/ Carton/ Foam Box With Bubble wrap/ Plastic Bag/ Plastic Film/ Pearl Cotton/ Paper Piece, depending On Specific Project
MOQ		For injection molding service, small parts ≥1,000 pcs big parts ≥ 500 pcs
Lead Time		7-12 working days if mass production quantity ≤ 10,000 pcs
Transportation		By Express/ Sea/ Air/ Land
Payment Terms		T/T, PAYPAL, Western Union, VISA, Mastercard, E-Checking, APPLE_PAY, GOOGLE_PAY, etc.

Product Inspection Certificate:

Global Customer:

After-Sales Service:

1.Technical Support by phone Whatsapp or email around the clock

2.Problems will be dealt with as soon as possible according to the situation

Packaging：

To better ensure the safety of your goods, professional, environmentally friendly, convenient and efficient packaging services will be provided.

Factory Display ：

Factory Display.jpg

FAQ：

1.Q: Are you a trading company or a manufacturer?

A: we are manufacturer，We have our own factory, located in Shandong，welcome to contact us!

2.Q: What is the quality of your products?

A: We have high quality and best products, our products get some good feedback from customers around the world. Once you get our product, there are some issues in guarantee, we will provide help in the first place.

3.Q: Do you have ready stock?

A: Yes, we have large ready stock can meet your urgent request.

4.Q: Which countries do you export to?

A:So many, like Iran, Bangladesh, Indonesia, Philippines, Argentina, Nepal...