Long Weld Neck Flange Definition:
Long weld neck flange(LWN flange) is also call integral flange,it means a welding neck flange has a very long neck.Commonly, the welding neck flange has a tapered neck and a bevel end which is going to butt welding with the matching pipe.But the long weld neck flange,has a straight short pipe as the neck of a long weld neck flange.
Dimensions of Long Weld Neck 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.
Sealing Face of the Long Weld Neck Flange:
The sealing face of the long weld neck flange is same with the weld neck flange,so it could be raised face(RF),flat face(FF) or ring type joint(RTJ),the long weld neck flange is suitable to be used for the high pressure application.
The long weld neck flange could be in many materials,carbon steel,alloy steel or stainless steel.Jiangsu Gangyu Pipeline EquipmentCo., Ltd can supply the long weld neck flange as per customers’ requirements.
GERNERAL INFORMATION ABOUT FLANGE
Size range: 1/2" to 80" DN10 to DN2000
Design: welding neck, slip on, blind, socket welding, threaded, lap-joint
Pressure: PN2.5,PN6,PN10,PN16,PN25,PN40, class150, class300, class600, class900, class1500, class2500.
Wall thickness for welding neck flange: STD, SCH40, SCH80, SCH160. SCHXXS
Material: carbon steel , stainless steel ,alloy steel
Coating: black paint, yellow transparent paint, cold and hot dip galvanized
| Size |
1/2"-80"
|
| Type |
Weld Neck, Slip-On, Blind, Socket Weld, Lap Joint, Threaded, Orifice Flange,
Swivel Flange, Spectacle Blind,Etc.
|
| Standard |
ANSI, ASME ,MSS, API, DIN, JIS, BS. AWWA and GB
|
| Pressure |
ANSI 150LBS-2500LBS,
|
|
DIN PN6-PN100
|
|
BS PN0.25-PN25 PN2.0-PN42.0
|
|
ISO7005-1,PN2.5-PN40
|
| Materials |
ASTM:SA105N/A105
|
|
Low Temperature Carbon Steel: ASTM SA350 LF2
|
|
High Strength Steel: ASTM SA694 F42/46/52/56/60/65
|
| ASTM A182 F304/304L/316/316L |
| ASTM A182 F1/F5/F9/F11/F22/F91/Etc. |
| ASTM A182 F51/F53/F55/F60 |
| Nickel 200, Monel 400, Inconel 600/625, Incoloy 825/800 |
| 90/10,70/30 |
Advantage description:
PROVIDING ASME / EN / JIS / GB CODE & NON CODE INDUSTRIAL FLANGES FOR:
The Petrochemical, Process, and Waterworks industries. ANSI, API, AWWA pipe flanges in carbon steel , stainless steel , alloys and chrome steel. Weld Neck, Slip on, Blind, Threaded, Socket Weld, Lap Joint, Orifice Flanges, Ring, and custom flanges in sizes 1/2" to 203". Pressure classes - 75, 125, 150, 175, 250, 300, 350, 400, 600, 900, 1500, 2500, 5K, 10K, 15K, 20K. High Yield - Low Temp.
