Lap Joint Flange Nickel Alloy Steel Alloy 20 UNS N08020 4' SCH80 Forged For Industry
1. Alloy 20 bleed ring product introduction:
It appears that there is no difference between a Bleed Ring and a Drip Ring. The vast majority of companies call them bleed rings because they allow bleeding pressure or mount pressure gauges or other sensors into a piping system.
A bleed ring is a ring section with one or more radial pipe connections designed to fit between standard flanges within the bolt circle, using conventional gasket material. The ring normally comes with a 1/2 inch socket weld or 3/4 inch tapped for connecting with valves and instruments. The face of the ring can also be made to matched with any flange type, and has different sizes based on the ASME flange rating of the process piping.
Bleed Rings can provide a beneficial way of draining piping, taking samples, attaching instruments or even bleeding of a valve. They can also be used with a valve and/or blind flange, this allows you to reduce and dispose of the pressure for your valve before you remove the flange. This is usually done with a replacement for a leaky valve.
The bleed ring can come in any material or size, and is designed for connecting valves and instruments. The face of the bleed ring can be manufactured to match with any flange type. The standard sizes for a bleed ring are NPS 1 to NPS 24 and ASME Pressure Classes 150 through 1500. It comes in many different materials such as carbon steel, stainless steel etc.
2. UNS N08020 vent ring material introduction:
UNS N08020, also known as Alloy 20 is one of the “super” stainless steels developed for maximum resistance to acid attack, because of this, there are various uses for it in both the stainless and nickel industries. Alloy 20 seems to fall in-between both the stainless and nickel categories, as it does contain characteristics of both; however, the unified numbering system (UNS) does ultimately recognize it as a nickel based alloy, hence the UNS N08020 number.
Alloy 20 is an austenitic nickel-iron-chromium based alloy with additions of copper and molybdenum. Its nickel content aids in its chloride ion stress and corrosion resistance. The addition of copper and molybdenum provides resistance to hostile environments, pitting and crevice corrosion. Chromium adds to its resistance of oxidizing environments, such as nitric acid, and columbium (or niobium) reduces the effects of carbide precipitation. Most welding methods can be used when working with Alloy 20, except for oxyacetylene welding. It can also be hot formed using the same forces required to hot work austenitic stainless steels. In terms of machineability, outstanding finishes are possible using the same set-up and process speeds used for austenitic stainless steels, such as Stainless Steels 316 or 317.
CHEMISTRY ANALYSIS
| C |
MN |
P |
S |
SI |
CR |
NI |
MO |
CU |
OTHER |
M/NM |
| .07 Max |
2. Max |
.045 Max |
.035 Max |
1. Max |
19. – 21. |
32. – 38. |
2. – 3. |
3. – 4. |
|
NM |
3. Alloy 20 test ring drawing
DIMENSIONS BLEED RINGS - NPS 1 TO NPS 12
ASME 31.3, B16.5, B16.20
| NPS |
ID |
Pressure Class |
| 150 |
300 |
600 |
900 |
1500 |
| 1 |
28.6 |
63.5 |
69.9 |
69.9 |
76.2 |
76.2 |
| 1.1/2 |
41.3 |
82.6 |
92.1 |
92.1 |
95.3 |
95.3 |
| 2 |
54 |
101.6 |
108 |
108 |
139.7 |
139.7 |
| 2.1/2 |
63.5 |
120.7 |
127 |
127 |
161.9 |
161.9 |
| 3 |
79.4 |
133.4 |
146.1 |
146.1 |
165.1 |
171.5 |
| 4 |
104.8 |
171.5 |
177.8 |
190.5 |
203.2 |
206.4 |
| 6 |
155.6 |
219.1 |
247.7 |
263.5 |
285.8 |
279.4 |
| 8 |
203.2 |
276.2 |
304.8 |
317.5 |
355.6 |
349.3 |
| 10 |
257.2 |
336.6 |
358.8 |
396.9 |
431.8 |
431.8 |
| 12 |
304.8 |
406.4 |
419.1 |
450.9 |
492.1 |
514.4 |
| |
Notes:
- Dimensions are in millimeters unless otherwise indicated.
- C - 1/2 inch or 3/4 inch threaded or socket weld taps are standard. Multiple taps can be provided but must be orientated by customer. Thickness of ring may be affected if larger taps are required.
- X - Depending on the inside diameter of pipe or fitting.
- Standard finish of gasket surface shall be machined to 125-250 Serrated finish. Other surface finish must be specified by customer.
4. Alloy 20 BLEED RING install
Product Attribute
| Place of Origin |
China |
Brand Name |
BOYUE |
| Standard |
ASME B16.5 |
Type |
lap joint flange |
| Material |
Carbon Steel/Stainless Steel/Alloy Steel |
Thickness |
#150,#300,#600.#900 |
| Packing |
Ply-Wood Cases |
Payment |
30%TT+70% Balance |
Supply Ability:40000Pieces / per Month
Packaging & Delivery
Packaging Details:Generally plywooden case or following customer's requirement.
Port:Shanghai/Tianjin
Commerce Clause
| Minimum Order Quantity: |
1pcs |
| Price: |
Depending on quantity |
| Payment Terms: |
T/T or Western Union or LC |
| Supply Ability: |
40000pcs per month |
| Delivery Time: |
10-100 days depending on quantity |
| Packaging Details: |
PLY-WOODEN CASE OR PALLET |
FAQ
Q1: Are you a factory or a trade company?
A1: We are a professional manufacturer for designing and producing of Large-size products.(View Mor)
Q2: Do you make customized products or finished parts?
A2: All parts are custom made only, and in stock, we can produce based on your drawings.
Q3: Will my drawing be safe after you get it?
A3: Yes, we will not release your design to third party unless with your permission.
Q4: What is the MOQ?
A4: Small order is acceptable, but the more, the cheaper.
Q5: How about the samples?
A5: We are happy to make prototype part or sample for clients to ensure quality standard, but it’s charged according to your drawing.
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