Stainless Steel Blind Flanges

Stainless Steel Blind Flanges

Stainless Steel Blind Flanges are used in closed-end ductwork and are designed to bolt to the end of a pipe or fitting, effectively sealing the pipe and preventing the flow of fluid or gas. Offers excellent corrosion resistance, mechanical strength and durability. Commonly used in oil and gas, petrochemical, chemical, pharmaceutical, food and beverage, water treatment and other industries.

  • SUS
  • ASTM
  • SAE
  • UNS
  • AISI
  • JIS
  • BSEN
  • DIN

Production Process:

  • Alloying & Smelting
  • Casting
  • Quality Control & Testing
  • Extrusion
  • Polishing
  • Pickling
  • Passivation

Production Technology:

  • Melting
  • Casting
  • Hot rolled
  • Cold Rolled
  • Heat Treatment
  • Cutting
  • Machining
  • Surface Treatment

Available, welcome to consult

A) Packaging Details: Standard export seaworthy packing or as required.
B) Delivery Time: 30-50 days, 7 days for stock goods.
C) Loading Port: Shanghai, Tianjin, Qingdao.
D) Offer Ability: 5000MT/Per Month.
E) MOQ: 1 Pcs.

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Stainless Steel Blind Flanges Supplier Provides Rich Grade/Size

Gnee is a leading ISO certified Stainless Steel Blind Flanges supplier, manufacturer, exporter, manufacturer, wholesaler, distributor in China. We offer superior quality Blind Flanges and manufactured as per the highest industry standards. With prompt delivery, professional technical support and competitive pricing, our Steel Blind Flanges are available in a variety of grades and sizes and can be customized to your exact requirements. Gnee is your reliable partner to meet your stainless steel pipe needs, welcome to contact us!

Stainless Steel Blind Pipe Flange Specification
Product NameBlind Flange
Size1/2”(15 NB) to 48”(1200NB)
Class150lbs, 300lbs, 400lbs, 600lbs, 900lbs, 1500lbs, 2500lbs
TypesBlind Pipe Flange, Blind Flange
StandardANSI B16.5, ANSI B16.47 eries A and B, MSS SP44, ASA, API-605, AWWACustom Drawings
PressureClass 150, Class 300, Class 400, Class 600, Class 900, Class1500, Class 2500PN6,PN10,PN16,PN25,PN40,PN64 etc.
PackingNo Fumigate or Fumigate Plywood/Wood Pallet or Case
Surface TreatmentAnti-rust Paint, Oil Black Paint, Yellow Transparent, Zinc PlatedCold and Hot Dip Galvanized
Flange Face TypeFlate Face (FF), Raised Face (RF), Ring Type Joint (RTJ)
Blind Pipe Flange Common Grades In Large Stock
  • Oil Field
  • Offshore
  • Water System
  • Shipbuilding
  • Natural Gas
  • ElectricPower
  • Pipe Projects
Why Choose Gnee Blind Flange Company?

Gnee, as a Chinese stainless steel supplier with 15 years of history, exports to 60+ countries. We provide various shapes of stainless steel, including plates, coils, pipes, bars, and fittings. Gnee is committed to providing comprehensive stainless steel solutions, with excellent after-sales service, we support customization and ensure product quality.

In addition, our stainless steel has been successfully exported to more than 60 countries such as Singapore, Malaysia, The United Arab Emirates, Oman, Turkey, Nigeria, Egypt, Kuwait, Indonesia, Qatar, and Kenya. Many regular customers come to visit our company and factory and make multiple orders.

What‘s The Feature Of Stainless Steel Blind Flange?

Stainless Steel Blind Flanges are designed to seal the end of a pipe or vessel, providing a solid barrier to prevent the flow of fluid or gas. They effectively close off the system, ensuring containment and preventing leaks.

Blind Flanges have a solid, flat disc-like design without an opening in the center. This design allows for a complete seal and eliminates the possibility of flow through the flange.

Stainless Steel Blind Flanges can have either a raised face or a flat face on the flange’s sealing surface. The choice of face type depends on the specific application and the requirements for sealing and gasket compatibility.

Blind Flanges typically have bolt holes around the perimeter to allow for easy installation and securing of the flange to the pipe or equipment. The number and size of bolt holes vary based on the flange size and pressure rating.

Stainless Steel Blind Flanges are made from corrosion-resistant stainless steel materials, such as 304 or 316 grades. This ensures durability and protection against corrosion, making them suitable for use in various environments.

Blind Flanges are available in a wide range of sizes, pressure ratings, and materials to accommodate different piping system requirements. They can be used in industries such as oil and gas, chemical processing, petrochemical, water treatment, and more.

Stainless Steel Blind Flanges are manufactured in accordance with industry standards such as ASME B16.5 and ASME B16.47, ensuring dimensional compatibility and interchangeability with other flange components.

Blind Flanges are relatively easy to install and remove. They are secured to the pipe or equipment by tightening the bolts, providing a tight and secure seal.

What Services Does Gnee Provide?

Gnee can provide the following measurement services for stainless steel:

Dimensional Measurement: Measure dimensional parameters such as length, width and thickness by measuring instruments to ensure that the stainless steel is qualified and meets the design requirements.
Surface Measurement: Measure parameters such as flatness, bumpiness and surface roughness of the stainless steel surface to help ensure that the quality and surface condition of the stainless steel meets the requirements.
Thickness Measurement: Use thickness gauges to accurately measure the thickness of the stainless steel to ensure it meets the design requirements.
Material Measurement: Use material analysis instruments to measure the chemical composition and mechanical properties of the stainless steel to ensure that the quality and properties of the stainless steel meet the requirements.
Bending And Deformation Measurements: Use tools such as bending gauges and displacement sensors to measure and monitor the degree of bending and deformation of stainless steel to ensure that it is within the allowable range.

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Gnee can customize the size and shape of your stainless steel for your specific project needs. Custom design of stainless steel is carried out by a team of professional engineers and designers. Based on the project requirements and constraints, they will use calculation and simulation tools combined with experience and technical knowledge to optimize the stainless steel design to meet the specific needs of your different projects

● Adjustment of the thickness, width and length of stainless steel based on load calculations and strength requirements for structural design.
● The shape of the stainless steel can be designed according to the demand characteristics.
● If the convenience of installation and maintenance is considered, we can also add openings and passages for easy access and operation in the design for areas that require frequent maintenance.

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Sourcing Gnee stainless steel can provide the following further processing services. We can customize to meet the specific needs of our customers for different projects.

Cutting Service: Stainless steel can be custom cut to obtain the desired shape and size according to the customer’s needs. For example, flame cutting, plasma cutting, laser cutting, etc., can cut stainless steel into desired plates, blocks, shaped pieces, etc.
Bending & Forming: Stainless steel is bent and formed by applying stress and appropriate processes to obtain the desired shape.
Welding Services: Stainless steel can be subjected to various types of welding services, including manual arc welding, gas-shielded welding, laser welding, etc.
Hole Turning And Machining: Stainless steel is turned and holes are machined through the use of machining equipment. These processes produce smooth surfaces, precise holes and threads to meet specific assembly requirements.
Surface Treatments: Surface treatments can be applied to improve the corrosion resistance and aesthetics of the stainless steel. This includes methods such as painting, hot dip galvanizing, and electroplating to add a protective layer and provide corrosion resistance.

Ask Deep Processing Services

Gnee stainless steel can provide testing and the following third-party inspection services. These third-party testing services provide independent and objective verification of stainless steel’s compliance with relevant standards and regulations.

Mechanical Property Testing: Used to determine whether the strength, toughness, ductility and other mechanical properties of stainless steel meet the specified requirements.
Chemical Composition Analysis: Quantitative determination of elements on stainless steel samples through spectral analysis, atomic absorption spectroscopy, inductive coupling and other technologies.
Corrosion Performance Test: Common corrosion performance test methods include salt spray corrosion test, acid-base corrosion test and electrochemical corrosion test.
Tensile Strength Test: Through the tensile test, the parameters such as yield strength, tensile strength and breaking strength of stainless steel during the tensile process are measured.
Non-Destructive Testing: Non-destructive testing is used to evaluate hidden defects, cracks and looseness in stainless steel materials. Common methods include ultrasonic testing, magnetic particle testing, eddy current testing, and radiographic testing.
Pressure Test: By exposing stainless steel products to a specific pressure, it is tested whether there are problems such as leakage or deformation to ensure that its pressure resistance meets the requirements.
Surface Quality Test: Used to evaluate the surface flatness, smoothness and oxide layer of stainless steel products.
Welding Performance Test: Check the appearance, mechanical properties and metallographic microstructure of the weld to ensure that the quality of the stainless steel welded joint meets the requirements.
Metallographic Inspection: Through metallographic inspection, the structure, grain size, non-metallic inclusions, etc. of stainless steel are checked to evaluate its quality and performance.

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