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20MM Thickness 1/2' OD 165mm DN50 Flat Welding Flange

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20MM Thickness 1/2' OD 165mm DN50 Flat Welding Flange

20MM Thickness 1/2' OD 165mm DN50 Flat Welding Flange
20MM Thickness 1/2' OD 165mm DN50 Flat Welding Flange

Large Image :  20MM Thickness 1/2' OD 165mm DN50 Flat Welding Flange

Product Details:
Place of Origin: China
Brand Name: Flat welding flange
Certification: ISO9001
Model Number: LJ-PF316
Payment & Shipping Terms:
Minimum Order Quantity: 100pcs
Price: Negotiation
Packaging Details: Export standard packaging
Delivery Time: Depends on the quantity of goods
Payment Terms: L/C, T/T
Supply Ability: Annual output 50000 tons

20MM Thickness 1/2' OD 165mm DN50 Flat Welding Flange

Product Name: Flat Welding Flange Material: Carbon Steel
Standard: DIN,ANSI,ASTM,JIS,GB Size: 1/2' ~ 6'
Packing: Wooden Case Usage: Steel Pipe,Oil Gas Water
High Light:

DN50 Flat Welding Flange


OD 165mm Flat Welding Flange


DIN ANSI Carbon Steel Flanges


Flat welding flange is a kind of excellent pipeline construction component, which is very common in pipeline construction, and there are many kinds of flange, among which the flat welding flange is relatively famous.

Flat welding flange refers to the flange with neck and pipe transition. Welding flange is not easy to deform, so it has corresponding rigidity and elasticity requirements and reasonable welding thinning transition. It is usually used to connect pipelines and valves with PN more than 2.5MPa. Flat welding flange is also used to transport flammable and explosive media.



Size:1/2' ~ 6'

Usage:Steel pipe,Oil Gas Water


The flat welding flange is suitable for the connection of steel pipe with nominal pressure less than 2.5MPa. The sealing surface of Chongqing flange can be of lubricating type. There are concave convex type and tenon groove type, lubricating flat welding flange is widely used, and the medium condition is relatively loose, it can be used.

The raw material of flange is the steel plate produced by regular enterprises, and the raw material is relatively regular. Generally, there are many small apertures, simple processing, flat tread and low cost. It is low cost to train embryos with waste pin.

The flat welding flange is easy to obtain materials, easy to manufacture, low cost and widely used. But the rigidity is poor. Therefore, the supply and demand of chemical process piping system and height which are easy to burn, easy to explode and require high vacuum degree, and the types of sealing surface include plane and protruding surface.

Flange is generally cut with steel plate heating winding, raw material is also very good. The welding interface can not be seen after processing, but the density of flange forged with high pressure piping is very high, and the processing is very troublesome. Only one interface is welded in the middle, and the quality is very good.

Technical data sheet

Carbon Steel Flanges Flat welding flange technical data sheet as below:

Nominal diameter 16kg=l. 6MPa
outer diameter Bolt hole distance Bolt diameter Bolt hole number Flange thickness
DN10 90 60 14 4 14
DN15 95 65 14 4 14
DN20 105 75 14 4 16
DN25 115 85 14 4 16
DN32 140 100 18 4 18
DN40 150 110 18 4 18
DN50 165 125 18 4 20
DN65 185 145 18 4 20
DN80 200 160 18 8 20
DN100 220 180 18 8 22
DN125 250 210 18 8 22
DN150 285 240 22 8 24
DN200 340 295 22 8 26
DN250 405 355 26 12 29
DN300 460 410 26 12 32
DN350 520 470 26 16 35
DN400 580 525 30 16 38


a. Plastic bubble bag package b.Wove bag package c.Pallet d. Customized.

Delivery time

Our Steel flat factory have high ability for production, the delivery time is 20 days for small quantity, or if you are hurry for that, we can arrange and meet your shipping date.

Contact Details
Xi'an Longjoy Foreign Trade Co.,Ltd

Contact Person: Rachel Zhang

Tel: 13679287344

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