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Product > Flange > Weld Neck Flanges

Weld Neck Flanges

Weld Neck Flanges can be differentiated from all other types of flange by their long tapered hub. In addition, there is also a gentle transition of thickness in the region of the butt weld that joins them to pipe or a fitting.

Weld Neck Flanges are best suited for severe service conditions, whether loading conditions are substantially constant or fluctuate between wide limits.

Size

3/8"~120"
DN10~DN3000

Pressure

American Series	European Series
CLASS 150	PN 2.5
CLASS 300	PN 6
CLASS 400	PN 10
CLASS 600	PN 16
CLASS 900	PN 25
CLASS 1500	PN 40
CLASS 2500	PN 63
-	PN 100
-	PN 160
-	PN 250
-	PN 320
-	PN 400

Flange Facing Types

American Series	European Series
Flat Face(FF)	Type A(Flat Face)
Raised Face(RF)	Type B(Raised Face)
Tongue(T)	Type C(Tongue)
Groove(G)	Type D(Groove)
Female(F)	Type E(Spigot)
Male(M)	Type F(Recess)
Ring Joints Face(RJ)	Type G(O-Ring Spigot)
-	Type H (O-Ring Groove)

Materials

Carbon Steel	ASTM A105
Alloy Steel:	ASTM A182 F1/F5/F9/F11/F22/F91/F92 Etc
Duplex Steel:	Duplex F51 2205 UNS S31803, Super Duplex 2507 (UNS S32750), F55 (UNS S32760)
Stainless Steel:	ASTM A182 F304 F304L F304H F309 F310 F310S F316 F316L F316 F316Ti F317 F317L F321 F347 F347H
Duplex Stainless Steel:	ASTM A182 F51/F53/F55/F60
Nicke alloys:	Nickel 200, Monel 400, Inconel 600/625, Incoloy 825/800
Cu-Ni:	90/10,70/30

Standards

( Red can be available to download standard )

ASME B16.5-2013	ASME B16.47-2011	API 605-1988
MSS SP-44-2010	EN 1092-1-2007	EN 1759-1-2004
AS 2129-2000	CSA Z245.12-13-2013	ISO 7005-1-1992
GB/T 9112-2010	GB/T 9115-2010	GB/T 13402-2010
HG/T 20592-2009	HG/T 20615-2009	HG/T 20623-2009
SH/T 3406-2013	GOST- AFNOR- BS- DIN	-

Industrial Processes

Forging, Machining

Packaging

Plywood pallet or cases and according to customer's requirment

Usage

Oil Field, Offshore, Water System, Shipbuilding, Natural Gas, Electric Power, Pipe Projects etc.


Sleeved into plastic bag individually, pieces wrapped with water-proof material, bundled with nylon rope.Clear labels are tagged on the outside of the package for easy identification of the quantity and product I.D. Great care is taken during operation and transportation.During transportation items are tagged, packed in plastic bags and closed in carton boxes or seaworthy wooden cases,Prevent any damage.

Company Information

JNFIT INDUSTRIES LIMITED. is a professional pipe elbow manufacturer and supplier. Our pipe elbow has passed ISO 9000, Pressure Equipment Directive 97/23/EC (PED 97/23/EC), AD2000 Merkblatt W0, and API certification is under applying. It is widely used by Petrobras, Pemex, CNPC, Sinopec, CNOOC, and are well accepted by customers in many countries, including Italy,Russia, Spain, Germany, France, the United States, Brazil, Iran, India, and others. We welcome both domestic and international customers to choose our industrial pipe fittings which include industrial flange, forged fittings, steel pipes and high pressure tubing etc.
We are looking forward to working with you!

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