Dimensions of Class 1500 Female Ring-Joint Facing Figure-8 Blanks

Class 1500 Female Ring-Joint Facing Figure-8 Blanks are specialized components used in high-pressure pipeline systems, typically for sealing purposes in conjunction with flanges. These blanks feature a Ring-Joint facing and are designed to provide a tight, leak-proof seal, making them suitable for critical applications in industries such as oil and gas, chemical processing, and power generation.

Dimensions of Class 1500 Female Ring-Joint Facing Figure-8 Blanks:

Dimensions of Class 1500 Female Ring Joint Facing Figure 8 Blanks

Dimensions of Class 1500 Female Ring Joint Facing Figure 8 Blanks

NPS Inside Diameter,B,mm(in.) Outside Diameter,O,mm(in.) Centerline Dimension,A,mm(in.) Thickness,t,mm(in.) Web Width,W,mm(in.)
½ 21 (0.84) 61 (2.38) 80 (3.25) 22.4(0.88) 38 (1.50)
¾ 27 (1.05) 67 (2.62) 90 (3.50) 25.4 (1.00) 45 (1.75)
1 34 (1.32) 71 (2.81) 100 (4.00) 25.4 (1.00) 54 (2.12)
42 (1.66) 81 (3.19) 110 (4.38) 25.4 (1.00) 54 (2.12)
48 (1.90) 92 (3.62) 125 (4.88) 28.4 (1.12) 57 (2.25)
2 61 (2.38) 124 (4.88) 165 (6.50) 35.1 (1.38) 54 (2.12)
73 (2.88) 137 (5.38) 190 (7.50) 38.1 (1.50) 57 (2.25)
3 89 (3.50) 168 (6.62) 205 (8.00) 44.5 (1.75) 73 (2.88)
4 114 (4.50) 194 (7.62) 240 (9.50) 47.8 (1.88) 76 (3.00)
5 141 (5.56) 229 (9.00) 290 (11.50) 53.8 (2.12) 76 (3.00)
6 168 (6.62) 248 (9.75) 315 (12.50) 60.5 (2.38) 79 (3.12)
8 219 (8.62) 318 (12.50) 395 (15.50) 73.2 (2.88) 86 (3.38)
10 273 (10.75) 371 (14.62) 480 (19.00) 82.5 (3.25) 133 (5.25)
12 324 (12.75) 438 (17.25) 570 (22.50) 101.6 (4.00) 133 (5.25)
14 356 (14.00) 489 (19.25) 635 (25.00) 111.3 (4.38) 140 (5.50)
16 406 (16.00) 546(21.50) 705 (27.75) 124.0 (4.88) 146 (5.75)
18 457 (18.00) 613 (24.12) 775 (30.50) 133.0 (5.25) 152 (6.00)
20 508 (20.00) 673 (26.50) 830 (32.75) 142.7 (5.62) 165 (6.50)
24 610 (24.00) 794 (31.25) 990 (39.00) 168.1 (6.62) 178 (7.00)

NOTES:

(1)Hole size(where required due to bolt spacing)shall be the same as the flange bolt hole and located such that it will not interfere with bolting
between two flanges.
(2)Female ring-joint groove dimensions shall be in accordance with ASME B16.5
(3)The thickness of the web (or tie bar)dimension,Wt shall be as determined by para.4.1.

Haihao Group can provide a variety ASME B16.48 standard flange,as follows:

Materials and Construction

Class 1500 Female Ring-Joint Facing Figure-8 Blanks are typically made from high-strength, corrosion-resistant materials that ensure their performance in demanding environments. Common materials used include:

  • Carbon Steel: Often used for general-purpose applications, offering a balance of strength, durability, and cost-effectiveness. It is suitable for use in moderate pressure systems or non-corrosive environments.
  • Stainless Steel: More commonly chosen for its resistance to corrosion and high-temperature properties. Stainless steel blanks are ideal for applications involving corrosive fluids or gases, as well as those subjected to high-temperature conditions.
  • Alloy Steel: Alloy steels with higher strength and resistance to thermal and mechanical stresses may be used for the most extreme environments, such as those found in high-pressure steam systems or petrochemical refineries.

Applications of Class 1500 Female Ring-Joint Facing Figure-8 Blanks

These blanks are widely used across industries where safety and performance under high pressure are critical. Some of the typical applications include:

Oil and Gas Industry:

Sealing off pipeline systems: During maintenance, repairs, or when isolating parts of a pipeline, these blanks provide a secure closure to prevent leaks of hazardous substances.

Exploration and production: In offshore drilling platforms or oil rigs, where pipelines are exposed to harsh conditions, Class 1500 Female Ring-Joint Facing Figure-8 Blanks ensure that pressure systems remain sealed and operational.

Chemical Processing:

High-temperature reactors and pressurized vessels in chemical plants often require reliable sealing components to isolate specific sections of pipelines during maintenance or while switching out gaskets. The female ring-joint design ensures that these sections remain safe from leaks.

Power Generation:

Steam piping systems: In power plants, steam pipes are often under extreme pressure and temperature. Ring-joint facing blanks ensure that the flange joints remain secure, preventing leaks and ensuring the safe operation of the plant.

High-pressure gas systems: Similar to steam, high-pressure gas systems used in turbines and compressors rely on leak-proof connections, making these blanks essential for performance.

Refining and Petrochemical:

In refineries, where pipelines may carry flammable, toxic, or corrosive substances, these blanks are essential for sealing off sections during maintenance or when modifying the piping layout. Figure-8 blanks also offer enhanced sealing and stress resistance, which is vital when working with volatile materials.

For detailed project requirements or precise dimensions for a specific application, it’s recommended to consult the ASME B16.48 standard or contact professional supplier like Haihao Group. Email:sales@haihaogroup.com

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