Zhengzhou Huitong Pipeline Equipment Co.,Ltd.
Zhengzhou Huitong Pipeline Equipment Co., Ltd.
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Welding Neck Flanges are easy to recognize at the long tapered hub, that goes gradually over to the wall thickness from a pipe or fitting.
The long tapered hub provides an important reinforcement for use in several applications involving high pressure, sub-zero and / or elevated temperatures. The smooth transition from flange thickness to pipe or fitting wall thickness effected by the taper is extremely beneficial, under conditions of repeated bending, caused by line expansion or other variable forces.
These flanges are bored to match the inside diameter of the mating pipe or fitting so there will be no restriction of product flow. This prevents turbulence at the joint and reduces erosion. They also provide excellent stress distribution through the tapered hub and are easily radiographed for flaw detection.
This flange type will be welded to a pipe or fitting with a single full penetration, V weld (Buttweld).
DETAILS OF WELDING NECK FLANG
1. Weld Neck flange 2. Butt Weld
3. Pipe or Fitting
2. About Nickel 200
Nickel 200 is normally limited to service at temperatures below 600° F. At higher temperatures Nickel 200 products can suffer from graphitization which can result in severely compromised properties. When operating temperatures are expected to exceed 600° F, carbon content becomes critical. The lower carbon content of Nickel 201 makes the material resistant to graphitization and therefore less subject to embrittlement. Nickel 200 & 201 are approved for construction of pressure vessels and components under ASME Boiler and Pressure Vessel Code Section VIII, Division 1. Nickel 200 is approved for service up to 600° F while Nickel 201 is approved for service up to 1230° F. Melting point is 2615-2635° F.
Nickel 200 (UNS N02200) Chemical Composition, %
| Ni | Fe | Cu | C | Mn | S | Si |
|---|---|---|---|---|---|---|
| 99.0 min | .40 max | .25 max | .15 max | .35 max | .01 max | .35 max
|
3. Packing:
Export Standard packing with woven cloth, carton/strong plywood case/woden box for safety
Bar &forgings,Pipes &pipe fittings, Sheet,Strip: Packed in Nylon Poly cloth first,then woden box if needed.
The goods can also be packed as the clients' demand.
4. Delivery time:
If we have stocks for your demanded size, we can deliver within 3 days.
For customised sizes and in quantity over100 kg (Some materials are allowed MOQ 50 kg),we can guarantee delivery within 3 weeks or 25 days.
5. HT promise best quality,competitive price and professional service.
Free sample is available.
Mill Test Certificate is supplied with shipment.
The third party inspection is accepted.