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You are here: Home » Products » Forged Steel Flange » Class 300 Blind Flange
Tel:(+86)372-2155516
 
Mobile: (+86)18625862121
 
 
Contact: Jerry Zhao
 
Address: No 888 Xigangshen Road Jiading Shanghai
 

Size Range: 1/2" -  80" / DN15 - 2000

Thickness Schedule: SCH 10 - SCH 160, XXS

 

Standard: ANSI / ASME B16.9 / MSS SP 43

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Size Range: 1/2" -  80" / DN15 - 2000


Thickness Schedule: SCH 10 - SCH 160, XXS


Standard: ANSI / ASME B16.9 / MSS SP 43
 

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Size Range: 1/2" - 48" / DN15 - 1200

Thickness Schedule: SCH 10 - SCH 160, XXS


Standard: ANSI / ASME B16.9

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We are a manufacturer, supplier and exporter of ASME B16.9 butt weld equal and reducing tee in China.

ANSI / ASME B16.9 steel pipe tee dimensions and weight chart is free for you.

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Shape Type: Equal and Reducing 

Size Range: 1/2" - 80" / DN15 - 2000

Thickness Schedule: SCH 10 - SCH 160, XXS

Standard: ANSI / ASME B16.9

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Type: Long Pattern (LP) and Short Pattern (SP)

Size Range: 1/2” - 24” / DN15 - 600

Thickness Schedule: SCH 10 - SCH 160, XXS

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Size Range: 3/4" - 60" / DN20 - 1500

Thickness Schedule: SCH 10 - SCH 160, XXS

Standard: ANSI / ASME B16.9 / MSS SP 43

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Size Range: 3/4" - 60" / DN20 - 1500

Thickness Schedule: SCH 10 - SCH 160, XXS

Standard: ANSI / ASME B16.9 & MSS SP-43

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Size Range: 1/2" - 48" / DN15 - 1200

Thickness Schedule: SCH 10 - SCH 160, XXS

Standard: ANSI / ASME B16.9

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Type: 90 Degree and 45 Degree

Shape: Straight and Reducing Elbow

Size: 1/8” – 4” / DN6 - DN100

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Shape: Equal and Reducing Tee

Size: 1/8"- 4" / DN6 - DN100

Pressure: Class 3000LBS, 6000Lbs, 9000lbs.

Standard: ASME B16.11, BS3799

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Shape: Equal Cross Tee and Reducing Cross Tee

Size Range: 1/8” – 4” / DN6 - DN100

Pressure Rating: Class 3000lbs, 6000lbs, 9000lbs.

Standard: GB/T 14383, ASME B16.11, BS3799

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Type: Full Coupling and Half Coupling

Shape: Straight Coupling and Reducing Coupling

Size Range: 1/8” – 4” / DN6 - DN100

Pressure Rating: Class 3000lbs, 6000lbs, 9000lbs

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Size Range: 1/8” - 3” / DN6 - DN80

Pressure Rating: Class 3000lbs


Standard: MSS SP-83

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Type: 90 Degree and 45 Degree Elbow

Shape: Straight and Reducing Elbow

Thread Type: NPT, PT, BSPP, BSPT, PF

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Shape: Equal and Reducing Tee

Size Range: 1/8” – 4” / DN6 - DN100

 

Pressure Rating: Class 2000 lbs, 3000 lbs, 6000 lbs

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Shape: Equal and Reducing

Size: 1/8" -  4" / DN6 - DN100

 

Pressure: Class 2000 lbs, 3000 lbs, 6000 lbs

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Type: Full and Half Coupling

Shape: Straight and Reducing Coupling

Thread Type: NPT, PT, BSPP, BSPT, PF

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Size Range: 1/8” – 4” / DN6 - DN100

Pressure Rating: Class 3000lbs, 6000lbs

 

Standard: ASME B16.11, BS3799, EN 10241

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Size Range: 1/8” - 3” / DN6 - DN80

Pressure Rating: Class 3000lbs

 

Standard: MSS SP-83

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Class 300 Blind Flange

Sealing Face: RF, FF, FTJ

Size Range: 1/2" - 60" / DN15 - DN1500

Pressure Rating: Class 150, 300, 600, 900, 1500, 2500lb
Availability:
Quantity:

What is a Blind Flange

blind-flanges-dimentions

Blind flange (BL) is used to close off a pipe or an opening in a system.Blind flanges serve a crucial role in maintaining the integrity of piping systems, preventing leaks, and enabling safe pressure testing.

Class 300 Blind flanges are an essential component in piping systems, often used to close off the ends of pipes and vessels. These flanges do not have a centre bore, making them ideal for applications where flow or pressure does not need to be controlled. They are typically made from carbon steel, stainless steel, or other alloy materials and can withstand high temperatures and pressures.

When using Class 300 blind flanges, proper gasket selection, accurate bolt torquing, and adherence to installation procedures are important to ensure a reliable and secure seal.

Specification

Material

DUPLEX STAINLESS STEEL,NICKEL ALLOY,INCOLOY,INCONEL,HASTELLOY,MONEL

STANDARD

ASME/ANSI/DIN/GB/HG/JIS/JPI/ISO/BS,etc.

CONNECTION

FF,RF,RTJ,T&G,M&F

SIZE RANGE

1/2" - 120" (DN15-DN3000)

PRESSURE(CLASS)

150-2500

MANUFACTURING PROCESS

Cutting,Die Forging/Free Forging,Heat treatment,CNC Machining

SURFACE TREATMENT

Anti-rust Paint,Oil Black Paint,Yellow transparent,Zinc Plated,Cold and Hot Dip Galvanized

TESTS

Chemical Component Analysis, Mechanical Properties,UT,PT

Function

Class 300 blind flanges are used to close the end of a pipeline or piping system. They are commonly used in areas that require temporary or permanent isolation of lines. In temporary isolation, these flanges test pressure and detect leakage in pipelines before they become operational. They are also used to ensure that sections of pipelines are not contaminated during maintenance.

Types of Blind Flange

Class 300 blind flanges are made of different materials, such as stainless steel, carbon steel, nickel, and alloy. There are different blind flanges, each designed to meet specific operational requirements, such as reducing turbulence and maintaining flow rate. The most common blind flanges include raised faces, flat faces, and ring joints. Raised face blind flanges come with a lip or a raised surface on the face. This ensures that the gasket fits securely in place. Flat-face blind flanges, on the other hand, have a flat surface that makes them ideal for low-pressure applications. Lastly, ring joint blind flanges are designed for high-pressure piping systems.

Application

Blind flanges are used in different industries, including oil and gas, chemical, petrochemical, and pharmaceutical industries. They are used in high-pressure and low-pressure applications to isolate piping systems during maintenance and testing. These flanges can also be used to separate fluids and gases in pipelines to ensure that the quality of the product is not compromised or contaminated.

Installation

Blind flanges are installed using bolt holes that are drilled around the outside of the flange. The number of bolts to secure the flange varies depending on the size and pressure rating. Before installation, it is important to ensure that the correct type and size of the flange are used to prevent leakage. Proper placement of gaskets is also important to ensure the flange is securely sealed.

ASME B16.5 Blind Flange

ASME B16. 5 is limited to flanges and flanged fittings made from cast or forged materials, and blind flanges and certain reducing flanges made from cast, forged, or plate materials. Also included in this Standard are requirements and recommendations regarding flange bolting, flange gaskets, and flange joints. ASME B16. 5 provides seven pressure classes for flanges. They are Classes 150, 300, 400, 600, 900, 1500, and 2500.

Class 300 blind flange have same similar function as plug or cap, all of them are used to block off a section of piping system. It is different as the others flanges, there is no hub and bore in the center. Forged steel flange is a disc-shaped piece of equipment used to connect a pipe to fittings or valve or other component to form a pipework system. Usually flange has been attached to pipe or tube end to, and then a gasket is inserted in the middle to form a seal. Finally they are joined together with bolts and nuts.

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Tel: (+86) 372-2155516
Mobile: (+86) 18625862121
Email:order@zzsteels.com
Contact: Jerry Zhao
Address: No 888 Xigangshen Road Jiading Shanghai

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