Stainless Steel Flange Plug

Our Qihong stainless steel flange plugs are suitable for various media scenarios, meeting the pipeline sealing needs under different pressures and temperatures. They offer multiple advantages, including high corrosion resistance, high sealing performance, and easy installation. Our company has focused on stainless steel fasteners and raw materials for many years, providing high-quality products at competitive prices, making us a trustworthy stainless steel flange plug supplier.

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Product Description

Qihong high quality stainless steel flange plugs are made of 304 and 316 stainless steel, resisting corrosion from humid, acidic, and alkaline media, and are not prone to rust. They can be used in harsh or high-cleanliness environments, such as the chemical industry, food industry, and marine environments. The products feature O-rings, metal sealing surfaces, and threaded fastening, effectively preventing gas and liquid leaks. They can withstand certain high-pressure and high-temperature conditions, ensuring reliable sealing.

Furthermore, our products are very easy to install and disassemble. Because we use both external and internal hexagonal caps, installation requires no welding and can be done directly with a regular wrench. Therefore, frequent installation and disassembly are not a problem, saving you significant labor and time costs.

In addition to the above characteristics, our Qihong stainless steel flange plugs have high hardness and pressure resistance, making them resistant to deformation and damage in piping systems. They can withstand impact and pressure, exhibiting excellent stability.

Below is our selection parameter , hoping to provide you with products that match your needs.

Parameter	Details
Material	Commonly used stainless steel materials include 304, 304L, 316, and 316L. 304 has good corrosion resistance, while 316 further improves upon 304's resistance to acid and alkali corrosion. 304L and 316L are low-carbon versions with better resistance to intergranular corrosion.
Nominal diameter (DN)	DN10~DN2000, etc. Different specifications are suitable for pipes of different diameters. For example, a DN100 flange plug can be used for pipes with an inner diameter of 108mm.
Nominal pressure (PN)	PN0.6~PN16.0MPa, or American system Class 150, Class 300, etc. For example, PN1.6MPa means that the flange plug can withstand a pressure of 1.6 MPa.
Sealing Surface Types	Raised Face (RF), Faceless Face (MFM), Tongue and Groove (TG), Flat Face (FF), Ring Joint (RJ), etc. RF is widely used; MFM and TG are suitable for applications with high sealing requirements; RJ is used in high-pressure scenarios.
Connection Methods	Flat Face (PL), Necked Flat Face (SO), Necked Butt Face (WN), Socket Weld (SW), Threaded (TH), Blind Flange (BL), etc. Flat Face is low-cost and suitable for medium and low pressure; Necked Butt Face has high rigidity and is suitable for high-pressure, high-temperature, and toxic/hazardous media applications.
Applicable Temperature Range	The applicable temperature range varies depending on the material of the stainless steel flange plug. For example, 304 stainless steel is generally suitable for -20℃ to 400℃, while 316 stainless steel is suitable for approximately -196℃ to 600℃.
Bolt Specifications	The bolt specifications and number vary depending on the size and pressure rating of the flange plug. For example, a DN100, PN1.6MPa flat-face welding flange plug may use 8 M16 bolts.
Dimensions	These include outer diameter, inner diameter, and thickness. For example, a DN100, PN1.6MPa flat-face welding flange plug may have an outer diameter of 220mm, an inner diameter of 108mm, and a thickness of 20mm.