Haihao Group

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  Weld Neck Flange

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  Slip On Flange

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  Threaded Flange

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  Blind Flange

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  Plate Flange

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  Socket Weld Flange

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  Loose Flange(Lap Joint Flange)

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  Orifice Flange

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  Integral Flange(Long Weld Neck Flange)

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  Spectacle Flange

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  Non-Standard Flange

Forged flange:

A flange is a rib or rim used for strength, guiding or attachment to another object such as a pipe,steam cylinder,pressure vessel,etc.Pipes,tubes or vessels can be easily assembled or disassembled by using it. Besides,flanges are fit to many other compenonts,such as valves,wheels,bellows.

In different projects and designs,flanges are used in different types,commonly,including:

Welding neck flanges (WN FLANGES)
Slip-on flanges (SO FLANGES)
Plate flanges (PL FLANGES)
Threaded flanges (THR FLANGES)
Lap joint flanges (LJ FLANGES)
Tongue and groove flanges (T FLANGES/ G FLANGES)
Blind flanges (BL FLANGES)
Socket weld flanges (SW FLANGES)
Male-and-female flanges (M FLANGES/ F FLANGES)
Ring joint flanges (RJ FLANGES)
Lovekin flanges (LK FLANGES)
HEBEI HAIHAO GROUP supply flanges used extensively with pipe fittings in all kinds of industrial applications,including:natural gas,chemical,petroleum,ship building,marine,paper making,metallurgy,electric,power,boiler,etc.
Depending on different applications, we have the following materials for the flanges:

Carbon steel: ASTM A105,ASTM A105N,GB 20,C22.8.

Alloy steel: ASTM/ASME A234 WP 1-WP 12-WP 11-WP 22-WP 5-WP 91-WP 911

Stainless steel: ASTM/ASME A403 WP 304-304L-304H-304LN-304N

ASTM/ASME A403 WP 316-316L-316H-316LN-316N-316Ti

ASTM/ASME A403 WP 321-321H ASTM/ASME A403 WP 347-347H

Low temperature steel: ASTM/ASME A402 WPL 3-WPL 6

High performance steel: ASTM/ASME A860 WPHY 42-46-52-60-65-70

Our flanges are usually according to different standard for different customers and projects:

America standard: ANSI B16.5,ANSI B16.47,ETC.

German standard: DIN 2573/DIN 2576/DIN 2631/DIN 2632/DIN 2633/DIN 2634/ DIN2635/DIN 2527

Japen standard: JIS B2220

Europe standard: BS4504/BS 10/UNI 2276 UNI 2277/UNI 2278/ UNI 6089/UNI 6090/EN 1092.

We also manufacture other un-standard flanges according to customers’requirements, and some forgings. These products have passed the ISO9000, ISO14001, GB/T28001, and Q/SY1002.1 certification. Due to our high quality and low prices, our products are well received in the global market, in countries such as the USA, Italy, Belgium, Chile, Bolivia, United Arab Emirates, Brazil, South Korea, India and more.

For more information, please feel free to contact us!