En 1092-1 Blind Flanges

Your Professional En 1092-1 Blind Flanges Supplier

Shanxi Hongkai Forging Co., Ltd. is located in China Energy Heavy Chemical Industry Base. Dingxiang County, the hometown of forging in Shanxi Province. Mainly produce flanges and forgings of various specifications. Application in piping installation, pressure vessel, equipment accessories.

Why Choose Us

Our Service
With strong technical force, advanced production technology, perfect quality inspection, and reliable after-sales service, it provides a basis for supervision and cooperation for many customers at home and abroad.

Our Certificate
The company Excellent Supplier of 2019 Safety production standardization certificate Quality management system certification.

Production Market
The products are mainly exported. It is exported to Europe, America and other countries and regions. The product quality is good, and the service is attentive. It is deeply appreciated and trusted by customers and users at home and abroad, and has won a high reputation. They have become one of the largest flange and forging suppliers in China.

Our Factory
Shanxi Hongkai Forging Co., Ltd. is located in China Energy Heavy Chemical Industry Base. Dingxiang County, the hometown of forging in Shanxi Province. Convenient transportation, abundant coal and power resources, fast communication and superior environment.

Advantages of En 1092-1 Blind Flanges

High strength

With its non-porous design, the Blind Flange can withstand high pressure in the system, making it suitable for high-pressure situations.

Multiple materials available

Blind Flanges can be manufactured from various materials such as carbon steel, stainless steel, and alloy steel, making them suitable for diverse media and environmental conditions.

Easy installation and disassembly

Blind Flanges can be easily installed and disassembled using bolts, making them ideal for pipeline systems that require frequent maintenance or expansion.

Isolation function

In multi-product pipeline systems, Blind Flanges can temporarily or permanently isolate different fluids, ensuring the safety and stability of the system.

En 1092-1 Blind Flanges Dimensions

Flanges DN	Pipe	Flanges				Screws		Flanges Weight
Flanges DN	Pipe	d1	k	D	b	d2	Bolt holes	KG
15	21,3	22,0	55	80	12	11	4	0,401
20	26,9	27,5	65	90	14	11	4	0,590
25	33,7	34,5	75	100	14	11	4	0,716
32	42,4	43,5	90	120	16	14	4	1,153
40	48,3	49,5	100	130	16	14	4	1,344
50	60,3	61,5	110	140	16	14	4	1,478
65	76,1	77,5	130	160	16	14	4	1,850
80	88,9	90,5	150	190	18	18	4	2,944
100	114,3	116,0	170	210	18	18	4	3,247
125	139,7	141,5	200	240	20	18	8	4,301
150	168,3	170,5	225	265	20	18	8	4,741
200	219,1	221,5	280	320	22	18	8	6,862
250	273,0	276,5	335	375	24	18	12	8,893

Materials of En 1092-1 Blind Flanges

EN 1092 flanges are made from a range of materials to suit different media and environmental conditions. The most common materials are carbon steel, stainless steel, alloy steel, and non-ferrous metals such as brass and bronze. The selection of materials depends on factors such as the fluid or gas being transported, the temperature and pressure rating, the corrosion resistance, and the cost. For corrosive media, materials such as Hastelloy, Monel, and Duplex stainless steel may be used.

Process of En 1092-1 Blind Flanges

Material Selection: Use certified steel plates or forgings with material test certificates.

Blank Cutting: Cut circular blanks from hot-rolled plates or bars, depending on the required thickness and flange type.

Forming/Machining:
Plate Cut (Type 05): Machining the blank's inner/outer diameter, thickness, and bolt holes directly.
Forged (Common for higher PN/sizes): Forging the material into shape, then machining.

Facing & Sealing Surface: Machining the flange face to the specified type (e.g., Type A Flat Face, Type B Raised Face with specific height 'f').

Drilling: Precisely drill bolt holes according to the standard's diameter (d) and count (n) for the given PN and DN.

Heat Treatment: Some materials may require heat treatment, though often not for plate-cut flanges.

Finishing & Marking: Deburr, clean, and mark with standard (EN 1092-1), PN, DN, material, heat number, details.

Inspection: Visual and dimensional checks to meet tolerances for dimensions, bolt circle, and face finish.

Applications of En 1092-1 Blind Flanges

En 1092-1 Blind Flanges are widely used in industries where system integrity and safety are paramount. Key applications include:

Oil and Gas:

Sealing pipelines during maintenance or expansion, ensuring leak-proof connections in high-pressure environments.

Petrochemical:

Blocking valves and vessels for inspection, reducing downtime during system upgrades.

Power Generation:

Facilitating access to turbines and boilers for routine checks, enhancing operational efficiency.

Water Treatment:

Isolating sections of piping for repairs, preventing contamination and ensuring compliance with safety standards.

Shipbuilding:

Providing secure sealing in marine environments, resisting corrosion from saltwater exposure.

FAQ

Q: How does a blind flange work?

A: A blind flange (also called a 'closure plate flange') is installed at the end of a piping system to terminate a pipe. It has no centre hole (bore), so there is no flow through the flange. A blind flange may be used for isolating a pipe, valve, or pressure vessel.

Q: What is the EN 1092 1 flange standard?

A: The EN 1092-1 Flanges standard covers flanges of different types including PN designated steel flanges and circular flanges. It also specifies the requirements for weights and stud bolts. These specifications are equivalent to DIN flange standards.

Q: Do blind flanges have a schedule?

A: Blind Flange, 4", PVC Construction, Schedule 80, 150 PSI Maximum Internal Pressure Rating @ 73°F. PVC is the most commonly used plastic material for manufacturing plastic pipe. It has a relatively high tensile strength and module of elasticity.

Q: What is the flange facing process?

A: The process of flange facing involves the machining of flange mating surfaces on pipe and vessel connectors to produce a tight, leak-proof seal when assembled.

Q: What is en 1092-1 equivalent ASME?

A: The nominal pressure ratings, such as PN20, PN50, PN110, PN150, PN260, and PN420 for steel En 1092-1 Type 01 Plate Flanges, are designed to be interchangeable with flanges based on American standards, such as ANSI/ASME B16.

We're well-known as one of the leading en 1092-1 blind flanges manufacturers and suppliers in China. If you're going to wholesale high quality en 1092-1 blind flanges with competitive price, welcome to get more information from our factory. Also, customized service is available.

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