Types and standard specifications of nickel flanges

Nickel flanges come in various types and standard specifications to suit different applications and operating conditions. Here are some common types of nickel flanges along with their standard specifications:

1. Weld Neck Flanges (WN):

• Standard Specifications: ANSI/ASME B16.5, ANSI/ASME B16.47 Series A & B, MSS SP-44
• Description: Weld neck flanges feature a long tapered hub that facilitates smooth transition from the pipe to the flange. They are welded to the pipe, providing strength and stability, particularly in high-pressure and high-temperature applications.

2. Slip-On Flanges (SO):

• Standard Specifications: ANSI/ASME B16.5, ANSI/ASME B16.47 Series A & B, MSS SP-44
• Description: Slip-on flanges have a slightly larger diameter than the pipe they are intended to fit over. They are slipped onto the pipe and then fillet-welded to provide a strong, leak-proof connection.

3. Blind Flanges (BL):

• Standard Specifications: ANSI/ASME B16.5, ANSI/ASME B16.47 Series A & B, MSS SP-44
• Description: Blind flanges are solid disks used to block off a pipeline or to create a dead-end. They are typically used for pressure testing or where the end of the line needs to be sealed.

4. Socket Weld Flanges (SW):

• Standard Specifications: ANSI/ASME B16.5, ANSI/ASME B16.47 Series A & B, MSS SP-44
• Description: Socket weld flanges have a socket (or bore) that allows for easy alignment of the pipe during welding. They are welded on the outside and socketed on the inside to provide smooth flow and excellent sealing.

5. Threaded (Screwed) Flanges:

• Standard Specifications: ANSI/ASME B16.5, ANSI/ASME B16.47 Series A & B, MSS SP-44
• Description: Threaded flanges have tapered threads to create a seal between the flange and pipe. They are used in low-pressure applications where welding is not feasible or required.

6. Lap Joint Flanges (LJ):

• Standard Specifications: ANSI/ASME B16.5, ANSI/ASME B16.47 Series A & B, MSS SP-44
• Description: Lap joint flanges consist of two parts: a stub end and a backing flange. The stub end is welded to the pipe, while the backing flange is free to rotate around the stub end. They are used in applications requiring frequent dismantling or where alignment of the bolt holes is critical.

7. Orifice Flanges:

• Standard Specifications: ANSI/ASME B16.36
• Description: Orifice flanges are used in orifice metering systems for measuring the flow rate of fluids in a pipeline. They feature pairs of pressure taps and provide access to the orifice plate for inspection or replacement.

8. Spectacle Blind Flanges:

• Standard Specifications: ANSI/ASME B16.48
• Description: Spectacle blind flanges consist of two metal discs attached to each other by a small section of metal. They are used in piping systems to isolate sections for maintenance or repair work.

9. Swivel Ring Flanges:

• Standard Specifications: API 6A
• Description: Swivel ring flanges are used in subsea and offshore applications where rotation of the flange is required to align bolt holes with mating flanges. They allow for easy installation and alignment in challenging environments.

10. Expander Flanges:

• Standard Specifications: ASME B16.5
• Description: Expander flanges are used to increase the bore size of the pipeline. They feature a larger internal diameter than standard flanges and are commonly used in pipeline expansions or transitions.

11. Nipoflanges:

• Standard Specifications: DIN 86029
• Description: Nipoflanges, also known as nipoflange fittings, combine the functions of a flange and a nipple. They are used in applications where a branch connection is required, such as in pipelines or vessels.

These are just a few examples of the types of nickel flanges available. Each type has its own unique design and application suitability, and it's essential to select the appropriate flange type based on the specific requirements of the piping system or application. Additionally, the choice of standard specifications ensures compatibility and compliance with industry standards and regulations.

Ms. Vivian (王宁宁)Sales Manager
Shaanxi Qianyi Tuoda Technology Co., Ltd
Email:qy002@sxqytd.com
Phone/WhatsApp/ Wechat: +8618829679311
Address: Building 4, Hi-tech Development Zone,
Baoji City, Shaanxi Province, China
Website:www.sxqytd.com

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