Custom-Made Special-Shaped Fasteners

The porous flange is a ring-shaped connecting piece with multiple bolt holes, used for the sealing connection of pipes, valves or equipment. Its porous design (commonly 4-24 holes) achieves high-pressure sealing through evenly distributed bolts. The material can be carbon steel, stainless steel or aluminum alloy. According to the sealing surface, it can be classified as flat (FF), convex (RF), etc. and is widely used in pipeline systems in industries such as petroleum, chemical engineering, and power. It has high pressure resistance (PN10-PN100), easy disassembly and maintenance features, and complies with international standards such as national standard (GB/T) and American standard (ANSI). It also supports non-standard customization of hole diameter and thickness.

Product Features:

1. Structural design features: Adopt a ring-shaped disc structure, with multiple bolt holes (4-24 holes) evenly distributed around the periphery, standardized hole spacing design to ensure alignment accuracy, providing various sealing surface forms such as flat (FF) and convex (RF)

2. Performance features: High-pressure sealing performance (PN10-PN100 grades), excellent pressure resistance and deformation resistance, good corrosion resistance (depending on material)

3. Material selection: Carbon steel series: Economical and practical, high strength; Stainless steel series: Strong corrosion resistance (304/316, etc.); Special alloys: Suitable for extreme conditions

4. Application advantages: Convenient installation and disassembly, easy maintenance and repair, stable and reliable connection, good leak prevention performance, strong adaptability, compatible with various pipe fittings and valves for use

5. High standardization: Complies with international standards such as GB, ANSI, DIN, JIS, etc., supports non-standard customization, flexibly meeting special requirements

6. Surface treatment process: Zinc plating, spray painting and other anti-corrosion treatments are available; Precision processing of sealing surfaces to ensure sealing effect

Product Application:

The perforated flange disc, as the core connection component of the pipeline system, has extensive application scenarios in the industrial field. The following are its main application areas and characteristics:

1. Petrochemical industry

Application scenarios: **Oil/gas pipeline transportation, reaction vessels, storage tanks, heat exchangers, etc.

2. Power and energy sector

Application scenarios: Steam pipelines in thermal power plants, cooling systems in nuclear power plants, hydraulic pipelines for wind power

3. Municipal water supply and drainage projects

Application scenarios: Water supply pipelines, sewage treatment equipment, pump stations

4. Pharmaceutical and food industries

Application scenarios: Clean pipelines, fermentation tanks, fluid transportation systems

5. Shipbuilding and marine engineering

Application scenarios: Ship pipelines, seawater desalination equipment, offshore platforms

6. Special industrial applications

Semiconductor industry: High-purity gas pipelines, using EP-grade polished flanges

Aerospace: Titanium alloy flanges, balancing lightweight and high strength

Low-temperature engineering: LNG pipelines, special flanges for -196℃ cryogenic conditions

Product advantages:

1. Excellent sealing performance: Utilizing precisely machined sealing surfaces (flat surfaces/convex surfaces/circular connection surfaces) with evenly distributed multiple bolt holes, ensuring balanced pressure transmission.

2. Strong adaptability to working conditions: A wide range of material options: from carbon steel Q235 to super duplex steel S32750, with a wide temperature application range: -196℃ to +800℃ (depending on the material).

3. Convenient installation and maintenance: Standardized hole spacing design for quick and precise alignment.

4. Safety and reliability guarantee: Strictly adhering to international standards such as ASME B16.5 and GB/T.

5. Customization service capability: Supports non-standard size customization.

FAQ:

Q1: What are the standard specifications for perforated flanges? How can one choose the appropriate one?

A1: International standards and the American standard (ANSI/ASME B16.5) are applicable to the petroleum and chemical industries, with pressure ratings ranging from Class 150 to 2500.

The European standard (EN 1092-1/DIN) is commonly used in the European market, with PN6 to PN100. The Chinese standard (GB/T 9119) is commonly used in China.

Q2: Can the flange be customized?

A2: Yes, non-standard sizes (extra-large/unique-shaped flanges) and special sealing surfaces (such as anti-corrosion linings) are available.

Q3: What materials are used for flanges? How to choose?

A3: Carbon steel (Q235, A105): Cost-effective, suitable for general water and steam pipelines

Stainless steel (304, 316): Corrosion-resistant, suitable for chemical and food industries

Alloy steel (16Mn, CrMo): Resistant to high temperature and high pressure, suitable for power stations and petrochemical industries

Stainless Steel Special-Shaped Fasteners

Special-Shaped Fastener