Long Weld Neck Flange
Courte introduction:
Flanges include integral flanges, loose flanges and arbitrary flanges, of which long weld neck flanges are a form of integral flanges, while loose flanges and arbitrary flanges can also be designed with long neck flange.
Long weld neck flange is also called long welding neck flange, long welded flange or long neck flange.
Difference Between Neck Butt Welding Flange and Integral Flange:
Neck butt welding flanges and integral flanges are welded by butt welding, and both have a long neck. How to distinguish between necked butt welding flanges and integral flanges in terms of appearance size and use? From the appearance point of view, the overall flange pipe end is thicker than the butt welding flange pipe end, and the inner diameter of the overall flange is the same as the nominal diameter except for PN1.6MPa and DN450 or more. The height of the neck of the overall flange is higher, and the thickness of the wall thickness is relatively thick, which can be clearly seen by the reference standard of the flange. From the application point of view, the integral flange is the flange that is connected with the equipment, such as the flange on the valve. This flange is integral with the valve and is not connected by welding. Integral flanges are mostly used in the manufacture of equipment, and are hardly used in pipeline design. The butt welding flange with neck is used in conjunction with valves, pumps and other equipment, and is welded to the pipeline. The size of the tail interface is consistent with the outer diameter and wall thickness of the corresponding pipeline/piece, and can be directly butt welded.
Types of Flange :
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Flanges
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WN(welding-neck);SO(slip-on);PL(Plate);BL(Blind);TH(Threaded);SW(socket-welding);LF/SE(lapped flange/stub end);LWN(long welding neck);Orifice flange; Reducing flange; API flange; Integral/Compact flange; Spectacle blind ,Lind spade and spacer, Paddle blind, Paddle spacer ;Orifice plate; Pipe plate ,Bleed ring.
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Advantage of Our Company :
1. Our flanges are produced with exquisite craftsmanship, high-strength welding, fast and reliable. The products are all customized processing, which can fully meet the needs of different working conditions of customers.
2. High precision, high finish, well-made, beautiful appearance and high cost performance.
3. Bevel welding is adopted, which is convenient for on-site construction.
As a professional manufacturer with 16 years experience of energy saving equipment, our product range is not only including plate heat exchanger, shell&tube heat exchanger, air heat exchanger, water chiller and cooling tower, but also including the accessories of seamless tube, flange, pipe fittings and so on. Our production line of accessories can meet our own demand for heat exchanger and projects as well as our customer's demand. Besides, we have advantage of very cost-efficient price, good quality and satisfying after-service.
Standard:
ANSI B16.5/ B16.47/ B16.36/ API605, 6A, 6B/ MSS SP44/ AWWA C207
DIN 2527/ 2528/ 2561/ 2565/ 2566/ 2573/ 2576/ 2627/ 2630/ 86029/ 86030 etc.
BS 4504 PN16/PN40, BS10 TABLE E/TABLE D
JIS/KS 5K, 10K, 16K, 20K, 30K
UNI 2253/2254/2276-2278/2281-2284/6083/6084/6089-6093
GOST 12820/12821
Material Available:
Carbon steel (ASTM A105 A350LF2 LF3 A694 A36 Q235 A3 20# 45# 20Mn 16Mn Q345 etc.);
Stainless steel (SS316, SS304, SS316L, SS304L, SS321 SS317 F51 F53 316Ti etc.);
Alloy steel (A182F5 A182F11 F22 15CrMo 30CrMo 35CrMo 40CrMO 42CrMo 4130 4140 etc.)
PN: 1.0--------58.0
American Series : CLASS 150, CLASS 300, CLASS 400, CLASS 600, CLASS 900, CLASS 1500, CLASS 2500
European Series : PN 2.5, PN 6, PN 10, PN 16, PN 25, PN 40, PN 63, PN 100, PN 160, PN 250, PN 320, PN 400
Flange Facing Types:
Flat Face (FF), Raised face (RF), groove (G), female(F), ring joints face(RJ)
Traitement de surface:
Transparent oil, rust-proof black oil or hot galvanized treatment.
Emballage:
Fumigation pallet, plywood cases or customer special demands
Applications range:
The long weld neck flanges are widely used in petroleum, chemical, nuclear power plants, food manufacturing, construction, shipbuilding, papermaking, medicine and other industries.
Produits connexes:
Elbows, tees, reducers, pipe caps, flanges, seamless steel pipes, ERW, LSAW, and etc...
We sincerely welcome you to contact us for any doubt, question or inquiry. Merci.
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