BLIND FLANGE
Blind Flange is a solid disc-shaped pipe flange without a center hole. It is used to close the end of the pipe or to block a section of the pipe. It is detachable. Blind flange is an indispensable component for end blocking or maintenance isolation in the pipeline system.
STRUCTURAL ADVANTAGES
Complete Sealing And Isolation Capability:
The blind flange is a solid structure with no center hole. It can completely block the pipeline fluid and achieve complete sealing. It is the most reliable sealing component at the end of the pipeline or the isolation section, which can prevent the leakage of the medium, seepage, or the entry of foreign impurities.
The Structure Is Extremely Simple, And The Strength Is High:
The blind flange is directly processed from a solid metal plate, which effectively avoids the structural weaknesses of conventional flanges such as center holes and openings. The overall force is more uniform, and the strength is higher than that of the perforated flanges of the same specifications, which is more suitable for pressure-bearing occasions.
Easy To Install And Disassemble:
It is consistent with the appearance of the standard flange plate, and can be tightened or loosened with the other flange by bolts at any time. It is quick and convenient to install, repair, or replace, and is suitable for frequent disassembly and temporary closure applications.
TECHNICAL PARAMETERS |
Products |
Steel Flange |
Flange Size |
1/2"-24"; DN15-DN600 |
Flange Class |
150#; 300#; 400#; 600#; 900#; 1500#; 2500# |
Flange Material |
Carbon Steel; Stainless Steel; Duplex Steel; Copper Nickel Etc. |
Flange Material Grade |
ASTM A105,ASTM A350 LF1. LF2, LF6,16MN, ASTM A182,F1,F5,F9,F11,F22, ASTM A182 F304/304L, F316/316L, F316Ti, F321, F904, UNS N08020, UNS N06625, HAS C276 etc. |
Flange Standard |
ANSI /ASME B16.5/16.47;DIN;BS;EN 1092-1;GOST;JIS;AWWA C207 etc. |
Flange Type |
Weld Neck; Slip On; Lap Joint; Blind Flange; Socket Flange; Spectacle Blind Flange; Orifice Flange; Long Weld Flange Etc. |
Flange Surface Treatment |
Anti-Rust Oil; Electricle Galvanized; Hot Dipped Galvanized; Painting Etc. |
Flange Connection |
Welding; Lap Joint; Threaded |
Flange Heat Treatment |
Normalizing; Annealing; Quenching+Tempering |
Application Industry |
Oil&Gas; Water Treatment; Electric Power; Chemical |
VERSATILE COMPATIBILITY
Compatible with a wide range of industry standards and flange types, blind flanges can be paired with various pipelines and equipment.
ADAPTABLE TO MULTIPLE SEALING TYPES
Available in a variety of sealing face options-including flat face, raised face, and ring joint-to meet diverse pressure and sealing requirements.
IDEAL FOR PRESSURE TESTING AND ISOLATION
Perfect for temporarily sealing off pipes during hydrostatic or pneumatic pressure testing, system expansion, or future connections.
RELIABLE IN HIGH-PRESSURE AND CRITICAL APPLICATIONS
The solid design ensures excellent resistance to high pressure, impact, and vibration, making them dependable in demanding environments.
WIDE RANGE OF MATERIAL OPTIONS
Blind flanges are available in carbon steel, stainless steel, alloy steel, and special alloys to suit various media, temperature, and corrosion conditions.



Q1: Do you produce directly?
A: Yes! We are a manufacturer-based company with complete equipment.
Q2: What is your minimum order quantity?
A: The minimum order quantity is 1 piece, and the price is affected by quantity, size, and material.
Q3: Are there free samples?
A: Yes, but customers need to pay for shipping.
Q4: Do you need to check before shipment?
A: Yes, all shipments must be checked for size, PMI, and quantity; any third-party inspection, please inform us before placing an order.