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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.Long weld neck flange (LWN flange), is used for high pressure situations, integral hub weld neck flanges are used and for very high pressure cases Long Welding Neck flanges are preferred. In this case, the weld are far from the ring to avoid bending stresses and weld stress being combined.
Stainless steel: F304 F304L F316 F316L 316Ti, copper, etc.
Temperature range
Temperaturtemperatur: - 20 ° C to 200 ° C
Temperatur: - 50 ° C to 230 ° C
Nitrile rubber: -30°C to 110°C
EVAC metal seal: -270°C to 150°C
Application:
Lwn flanges are primarily used in the petroleum and chemical industries, but can also be expected in residential and commercial buildings with temperature fluctuations and high stress, such as primary water and gas sources. Flanges are used for piping or piping to cause piping to bend or for water or air source flanges to be used for or piping to cause piping to bend or to repeat and change. Because long neck flanges are used for applications. The neck flanges are connected using a V-weld known as a butt weld.
Packing:
No Fumigate or Fumigate Plywood/Wood Pallet or Case
FAQ
Q1. Are you trade company or factory?
A: We are trading company in shanghai, but we have five branch factories which can supply the best quality pipes, tubes, fittings flanges and related accessories. Welcome to visit us.
Q2: Do you provide free samples? If not, how do you charge for it?
A: Yes, we could offer the sample for free charge but do not pay the cost of freight.
Q3. What can you buy from us?
A. The main forgings are the design forging processing of mechanical parts for automobiles, railroad forgings, agricultural machinery forgings,hole forging of valve body, connecting nut of oil pipeline, rigging ect.
Q4. Why is forged metal stronger than cast or machined metal?
This stems from the grain flow caused through forging. As the metal is pounded the grains deform to follow the shape of the part, thus the grains are unbroken throughout the part. Some modern parts take advantage of his for a high strength-to-weight ratio
Q5. How long is your delivery time?
A. Lead time is about 10-25 days. Orders with numerous kinds of parts will take more days.
Customers at home and abroad are welcome to write and talk about business.
TOBO GROUP sales head offce in Shanghai.
We are one of the Professional manufacturers Exporter Pipeline products in China .Our company was established in 1998, the plant covers 550, 000 square meters and a construction area ... TOBO GROUP sales head offce in Shanghai.
We are one of the Professional manufacturers Exporter Pipeline products in China .Our company was established in 1998, the plant covers 550, 000 square meters and a construction area ...