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Forged Welding Neck (WN) Carbon Steel Flanges

Basic Info

Model No.:  wn flange

Product Description

Model NO.: wn Flange Type: Blind Flange Structure: Flanges Sealing Surface: RF Size: 1/2"-200" Package: Wooden Case or Wooden Pallet Certificate: ISO9001:2008, SGS, BV, API etc QA & Doc: Product Certificate, Chemical Composition Report Specification: ASME/ ANSI B16.5, ASME/ ANSI B16.45 HS Code: 73079100 Standard: ANSI, DIN, GB, JIS, GOST, BSW Material: Carbon Steel Connection: Welding Manufacturing Way: Forging Application: Low and Middle Pressure Fluid Pipeline, Boiler Pressure Rating: Class 150, 300, 600, 900, 1500 Client: Turkey, Italy, France, Spain, South Africa Trademark: yhipec Origin: Cangzhou, Hebei, China
DN15 (1/2") to DN5000 (200")

1>. Carbon Steel Flange: ASTM A105, ASTM A350 LF2, ASTM A694 F42-F52-F60-F65- F70, C22.8, C21, Rst37.2, S235JRG2, P355NH, SS400
2>. Stainless Steel Flange: ASTM A 182 F304-304L-304H, ASTM A182 F321-321H, ASTM A182 F347-347H, ASTM A182 F316-316L-316H
3>. Alloy Steel Flange: ASTM A182 F1--F5- F9-F11, F12, F22, F51, 16Mo3, 1Cr5Mo, 15CrMo, 42CrMo, 12Cr1MoV, TStE355,4130, 4140, 4317, 4142, 4340, UNS440, 34CrNi3Mo, 25Cr2Ni4MoV, 18CrNiMo530CrMo, 9Cr2W, 9Cr2Mo, 9Cr3Mo, 60CrMoV, CK45, 5CrMnMo, 40Cr, 20Cr2Ni4, 5CrNiMo, 15CrNiMo, 20CrNiMo, 35CrMo, 40CrNiMo
4>. Duplex Stainless Steel: ASTM A182 F44, F45, F51, F53, F55, F60, F61
5>. Nickel Alloy: UNS 2200 (NICKEL 200), UNS 4400 (MONEL 400), UNS 8825 INCONEL (825), UNS 6600 (INCONEL 600), UNS 6601 (INCONEL 601), UNS 6625 (INCONEL 625), UNS 10276 (HASTELLOY C 276), UNS 2201 (NICKEL 201), (ALLOY 20 / 20 CB 3)
6>. Claded materials: ASTM B898, B263, B264 or closer explosion cladding, making materials of 2 in 1 or 3 in 1.

ASME/ ANSI B16.5, ASME/ ANSI B16.45, ASME/ ANSI B16.47
API 605,API 6L
CSA Z245.12
DIN2573, DIN2576.
BS1560, BS 4504,BS 10
AFNOR NF E29-200-1
JIS B2220
UNI 2276.UNI 2277.UNI 2278 .UNI 6089 .UNI 6090

1>. Weld neck flange(WN)
1, Preferred for high-pressure, subzero or elevated temperature
2, Hub is tapered and bored to match pipe's inside diameter so flow is not restricted, preventing turbulence and reducing erosion
3, Easily radiographed and provides excellent stress distribution

2>. Blind Flange (BL)
1, Used to close ends of piping
2, Has no bore
3, Permits access to sealed lines

3>. Lap Joint Flange (LJ)
1, Used where bolt alignment or access for cleaning is required
2, Similar to slip-on flange when used with lap joint stub end
3, Radius at intersection of flange face and bore to match lap joint stub end

4>. Slip On Flange(SO)
1, Not normally used in high-stress applications due to low hub and weld attachment
2, Silps over outside of pipe
3, Inside of flange welded at hub and end of pipe

5>. Socket Welding Flange (SW)
1, For small-diameter chemical processes, hydraulic and stream distribution lines
2, Similar to slip-on flange
3, Counter bore matches pipe bore, allowing unrestricted flow
4, Counter bore from hub side fits pipe's outer diameter -  can insert pipe in socket with fillet weld at hub

6>. Thread Flange (TH)
1, Used where welding would would be hazardous
2, Designed for low-pressure and non-cyclic applications
3, Bore is threaded to match pipe thread
4, Tapered to seal pipe and flanges

7>. Other flanges
Orifice, Expander, Reducing, Lightweight, Studding Outlets, Long Weld Necks,Metric, Navy Drawings


Transparent oil, rust-proof oil, hot galvanizing

Butt Weld & Socket Weld & Thread

Low and middle pressure fluid pipeline,boiler, petroleum and natural gas industry, drilling, chemical industry, Refinery Company, fertilizer industry, power station, shipbuilding, onshore platform.

Delivery Time:
within 25-30 days after we have confirmed your order

wooden cases or wooden pallets or as per customer's requirement

Pressure Rating:
Pressure Ratings: Class 150, 300, 600, 900, 1500 and 2500
Pressure Ratings: PN 6, PN 10, PN16, PN25, PN40 and PN64
Pressure Ratings: JIS 5K, 10K, 16K and 20K

ISO9001:2008, SGS, BV, API etc

Our main clients are from Turkey, Italy, France, Spain, South Africa, Moroco, Dubai, Iran, Syria, Singapore, Vietnam, Austria, USA, Canada, Mexico, Korea, Thailand, India, Bulgaria, Russia and so on

Product Certificate, Chemical Composition Report, Mechanical Properties Report, UT Report, Heat Treatment Report, Dimensions Check Report.

Jim Green
Export Manager
Hebei Yupeng Heavy Pipeline Equipment Manufacturing Co.,LTD.
T: +86 317 5105595
Mobile: +86 13373237018
Fax: +86 317 3067761
Web: or
ADD: Zhenggang Industry Zone, Yanshan County, Cangzhou, Hebei, China 061300

Contact us if you need more details on Flange. We are ready to answer your questions on packaging, logistics, certification or any other aspects about Carbon Steel Flange、Stainless Steel Flange. If these products fail to match your need, please contact us and we would like to provide relevant information.

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