Customized design: Personalized production can be carried out based on customer provided drawings and parameters (such as pressure, temperature, medium) to meet special working conditions.

Diverse materials: Supports the use of stainless steel such as 304, 316L, 321, as well as carbon steel, alloy steel, nickel based alloys (such as Inconel 625), etc., to adapt to corrosive, high temperature, and high pressure environments.

Advanced technology: using forging, slitting processing, CNC precision machining and other technologies to ensure product strength and accuracy, with an annual production capacity of over 2000 tons.

Widely applicable: Suitable for complex pipeline systems in industries such as petroleum, chemical, pharmaceutical, pressure vessel, shipbuilding, and food.

Quality assurance: Passed ISO9001:2000 quality management system certification, and some manufacturers provide EN 10204 3.1 material certification documents.

Non standard flanges are flanges customized according to specific equipment or engineering requirements, which do not fully follow the universal dimensions of national or international standards, and have the characteristics of high customization and strong adaptability.

Hongguan non-standard flange optional material

mainIncluding austenitestainless steel、Dual phase steel, titanium alloyHastelloy, Monel, Inconel, and customized special metals.

Sealing surface form, non-standard flanges can be customized with multiple sealing surfaces as needed to match different sealing requirements:

Flat (FF): Suitable for low-pressure systems, commonly used for matching cast iron flanges.

RF (RF): The most common type, which enhances the clamping force of the gasket and is suitable for medium voltage applications.

Concave convex surface (MFM): prevents the gasket from being squeezed out, suitable for high pressure and easily leaking media.

Mortise and tenon surface (TG): Excellent sealing performance, used in flammable, explosive or toxic medium systems.

Ring Connection Surface (RJ): Metal ring gaskets are used to achieve line sealing, suitable for high temperature and high pressure conditions, such as deep-sea oil and gas pipelines.

execution standard

Although it is "non-standard", it can still be designed and tested according to mainstream standard systems:

Chinese standards: GB/T 9112-2010, HG20592-2009, JB/T 79-94, etc.

American standards: ANSI B16.5, ASME B16.5 (Class series).

German standards: DIN2573, DIN2576, etc.

Japanese standards: JIS 5K, 10K, 16K, etc.

Note: Although non-standard flanges do not fully comply with the above standard dimensions, their pressure rating, sealing surface definition, or material specifications are often referenced as design basis.

Dimensions‌

Nominal diameter (DN): Wide range, from DN10 to DN6000 (240 ").

Outer diameter range: 75mm -2190mm, bolt hole center circle diameter 50mm -2130mm.

Bolt configuration: The number of bolt holes is 4-48, with a diameter of 11-30mm and thread specifications of M10-M27.

Flange thickness: 12-58mm, high-pressure or large-diameter flanges can be thicker to enhance pressure bearing capacity.

pressure rating‌

PN system (Europe/China): covering PN0.25 to PN42.0 (approximately 0.6-32 MPa).

Class system (America): Supports Class150 to Class2500, suitable for ultra-high voltage scenarios (such as CL1500).

Lb unit: commonly 150Lb-2500Lb, corresponding to the maximum allowable working pressure at different temperatures.