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Your Location: Home > Types of Flanges > Spectacle Blind Flanges > API 6A A182 F51 RTJ Spectacle Blind Flange 3-1/8 Inch 5000PSI R35
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API 6A A182 F51 RTJ Spectacle Blind Flange 3-1/8 Inch 5000PSI R35

  • FOB PriceUSD 1 - 1,900/Piece
  • PortNingbo or Shanghai Port
  • MOQ1 Piece
  • Supply Ability1000 Pieces Per Day
  • Payment TermsL/C,T/T,Western Union,MoneyGram
  • PackagingSeaworthy plywood cases or pallets
  • Delivery2 - 10 days

Detailed description

Quick Details

  • Size: 4" (DN86)
  • Material: F51 (2205/UNS S31803/UNS S32205)
  • Place of Origin: Zhejiang, China (Mainland)
  • Brand Name: Yaang
  • Standard or Nonstandard: Standard
  • Technics: Forged
  • Standard: API 6A
  • Type: F51 RTJ Spectacle Blind Flange

Packaging & Delivery

Packaging Details: Seaworthy plywood case or as customer requests
Delivery Detail: 2 - 10 days after receiving the deposit

Specifications

API 6A F51 RTJ Spectacle Blind Flange 3-1/8 Inch 5000PSI
1. Material: F51 (2205/UNS S31803/UNS S32205)
2. Size: 3 1/8" (DN86)
3. Standard: API 6A

4. Pressure Ratings: 5000PSI

Spectacle blind flange, is made by a steel spade and spacer, united by a welded handle. Spectacle blind may have a different type of joint face (RR Raised Face, FF Flat Face, RTJ Ring Joint), depending the type of flange.

The rtj spectacle blind flange is usually used on the oil line with two different function:

If the spade is put in between the flanges, it stops the fluid’s passage;

If the spacer is put in between the flanges, the passage of the fluid is allowed.

The rtj spectacle blind flange is inserted between two flanges: in order to guarantee a perfect waterlight two gaskets are normally mounted, one on each side of rtj spectacle blind flange.

China Spectacle Blind Manufacturer Yaang supplies API 6A F51 RTJ Spectacle Blind Flange, 3-1/8 Inch, 5000PSI.

Composition ranges for 2205 (F51) grade stainless steels

Grade

 

C

Mn

Si

P

S

Cr

Mo

Ni

N

2205 (S31803)

Min

Max

-

0.030

-

2.00

-

1.00

-

0.030

-

0.020

21.0

23.0

2.5

3.5

4.5

6.5

0.08

0.20

2205 (S32205)

Min

Max

-

0.030

-

2.00

-

1.00

-

0.030

-

0.020

22.0

23.0

3.0

3.5

4.5

6.5

0.14

0.20

Type

F51 RTJ Spectacle Blind Flange

Size

4" (DN100)

Standards

SO, WN, SW, TH, LJ, BL, PL, etc

Material

Carbon Steel: ASTM SA105N/A105, ASTM SA350 LF2,etc

Stainless Steel: ASTM A182 F304/304L/316/316L, etc

Alloy Steel: ASTM A182 F1/F5/F9/F11/F22/F91, Etc.

Duplex stainless steel: ASTM A182 F51, etc

Super Duplex Stainless Steel: S32750/2507/F53/F55, UNS32760, etc

Nicke alloys: Nickel 200, Monel 400, Inconel 600/625, Incoloy 825/800, 

                     Hastelloy C276, Hastelloy C276, Hastelloy B1/B2/B3, Alloy 20, etc

Cu-Ni: 90/10,70/30, etc

Applications

Petroleum,chemical,power,gas,metallurgy, shipbuilding, construction, etc

RTJ Spectacle Blind Flange Drawing

A spectacle blind flange is machined from a single piece of metal that is cut to match the pipe size, fit between two pipe flanges and requires an additional gasket when it is installed. Also, the bolts will need to be lengthened depending on what piping class and size blind is used. The thickness of the spectacle blind is specified based on the line pressure and pipe size.

API and ASME/ANSI flanges - comparing dimensions and pressure ratings

Although the dimensions of ASME and API flanges may sometimes be compatible for bolting - using the same bolt circle and the same number of bolts - they do not share the same pressure rating system.

ASME rates the pressure of a class based on the material of construction and the design temperature

API specifies allowable materials and gives it a specific pressure rating

The difference between ASME/ANSI and API is the fabrication material and a higher rated API operating pressure.

ASME/ANSI flanges are commonly used in industrial process systems handling water, steam, air and gas. API flanges are manufactured for high strength operating refinery systems with products such as oil and explosive gases.

The flange standards API 6A and ASME/ANSI B16.5 have the same dimensions - but the API 6A flanges are rated for higher pressures as indicated below:

API vs. ASME/ANSI Flanges with the same Dimensions
Flange Pressure Class Rating
(psi)
(kPa)
Nominal Size Range
(inches)
ASME/ANSI B16.5 API 6A ASME/ANSI B16.5 API 6A1)
Weld neck 600 2000 1/2 - 24 113/16 - 11
900 3000
1500 5000
Blind and Threaded 600 2000 113/16 - 211/4
900 3000 113/16 - 203/4
1500 5000 113/16 - 11

1) In the old API standard, flanges ranged from 1 1/2 to 10(20) inches.

  • 1 inch = 25.4 mm


Applications Of API 6A F51 RTJ Spectacle Blind Flange:            

1. petrochemical industry

2. Pharmaceutical industry 

3. Food industry

4. Aviation and aerospace industry

5. Architectural decoration industry

6. Oil and gas industry

Other Features:

1) Chemical and Physical characteristic: durable, corrosion resistant and high-temperature resistant

2) We also produce flange with special specifications according to customers’ requirements;


Packing

1) Packing Method:

Normal packing: Plastic film or bubble paper wrapped, endings protect  by caps,

then into wooden case or load on fumigation plywood pallet.

Custom product: As per your request.

Spectacle Blind Flange Packing

2) Shipping:

By Sea, By Air, By Train or River-and-Sea Coordinated Transport, according to your request.

Where can we find the high quality API 6A F51 RTJ Spectacle Blind Flange 3-1/8 Inch 5000PSI.

You can visit this website: www.yaang.com (Yaang Pipe Industry Co., Limited).

If any inquiry about products, please feel free to contact us [email protected]

Related products:More>>

Tel No:+86-18267732328 / Email:[email protected]
Address:Longwan District, Wenzhou, Zhejiang Province, China.

Copyright Notice © www.yaang.com Yaang Pipe Industry Co., Limited All rights reserved.
Yaang Pipe Industry Co., Ltd. is an international supplier of piping solutions for flange, butt welding fittings, socket welding fittings and threaded fittings. Our products are widely used in different industrial fields, including oil and gas, chemical industry, petrochemical industry, power plant, pulp and paper industry, environmental and water conservancy engineering, engineering projects, etc.

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