ANSI/ASME B16.5 ASTM A182 F316 RF Long Weld Neck Flange

ANSI/ASME B16.5 ASTM A182 F316 RF Long Weld Neck Flange

Followings are the definition, information and application of  various types of flanges:

Weld Neck Flange Slip On Flange Blind Flange Threaded Flange
Plate/Plain Flange Socket Weld Flange Orifice Flange Spectacle Blind Flange
Lap Joint/Loose Flange Long Weld Neck Flange Reducing Flange Rolled-Forging Ring Flange
Flange-Olet Tube Sheet/Tubesheet Anchor Flange Non-Standard/Custom Flange

The long weld neck flange should be butt welded with the pipes,it means the neck dimensions is same with the matching pipe,same diameter and wall thickness,commonly the long weld has a plain end, not a bevel end for welding.Except the neck, the LWN flange has a same dimensions with the welding neck flange. In addition,there are also the type LWN Heavy Barrel (HB) and the Equal LWN Barrel (E);they have a different shape and a thicker “Wall” which name is Nozzle.

ANSI/ASME B16.5 ASTM A182 F316 RF Long Weld Neck Flange

ANSI/ASME B16.5 ASTM A182 F316 RF Long Weld Neck Flange

Data Of Long Weld Neck Flange:

Standard:   ANSI/ASME B16.5, ANSI/ASME B16.47,BS4504,BS3293,EN 1092,DIN2631,DIN2632,DIN2633,DIN 2634,DIN2635,DIN2636,DIN2637,DIN2638,JIS B2220,SABS/SANS 1123,GOST/ГОСТ 12821-80 Flange,MSS SP-44 FLANGE,API 6A,6B,6BX weld neck flange,ISO 7005 weld neck flange.NFE 29203 weld neck flange,KS B1503,UNI 2280-67,UNI 2281-67,UNI 2282-67,UNI 2283-67,UNI 2284-67,HG20595,AS2129.

Size:  1/2″-160″.DN15 – DN4000mm

Pressure: Class 75, Class125, Class 150, Class 300, Class 400, Class 600, Class 900, Class 1500,Class 2500,

               3000 PSI, 5000 PSI, 10000 PSI, 20000 PSI.

               PN2.5, PN6, PN10, PN16, PN25, PN40, PN64, PN100, PN160.

               5K, 10K, 15K, 20K, 30K.

Sealing face:  Raised Face(RF), Flat Face(FF), Ring Type Joint(RTJ). 

Flange face finishing, MSS-SP-6, such as: Stock finishing, Spiral serrated finishing, concentric serrated finishing, smooth finishing etc. 

Coating:  Black paint, Yellow paint, Vanish oil etc.

Certificate:  BS EN10204 3.1 MTC, ABS, PED 97-23-EC, CE, ISO, API approved.

Application: Water Treatment, Shipbuilding industry, sea Platform, Petrochemical & Gas industry, Power plant, Valve industry, Construction, Chemical industry, General piping system etc.

Packing:  Wooden case, Plywood case, Pallet.

Marking: MSS-SP-25, necessary information of flange specification, Customized marking is available. 

The long weld neck flange could be in many materials, carbon steel ,alloy steel or stainless steel .Hebei haihao group can supply the long weld neck flange as per customers’ requirements.