🔹 Product Overview
Stainless Steel Blind Flanges are solid flanges without a bore, designed to completely close the end of a piping system or pressure vessel opening.
They provide reliable sealing and allow easy access for future inspection, maintenance, and system expansion. Compared with carbon steel blind flanges, stainless steel blind flanges offer superior corrosion resistance, oxidation resistance, and long service life, making them suitable for harsh and corrosive service conditions.
Manufactured from high-quality stainless steel such as ASTM A182 F304, F304L, F316, and F316L, our blind flanges comply with major international standards including ASME B16.5, ASME B16.47, EN 1092-1, DIN, JIS, and GOST, ensuring compatibility with global piping projects.
🔹 Key Features
• Material: Stainless Steel ASTM A182 F304 / F304L / F316 / F316L
• Type: Blind Flange (BL Flange)
• Connection: Bolted flange joint
• Pressure Rating: Class 150 – Class 2500 / PN10 – PN400
• Facing Type: RF / FF / RTJ
• Standards: ASME, EN, DIN, JIS, GOST
• Excellent corrosion and oxidation resistance
• Solid forged structure for high mechanical strength
• Reliable sealing performance
• Easy installation and removal for system maintenance
🔹 Materials & Grades
Common stainless steel grades include:
• ASTM A182 F304 / F304L
• ASTM A182 F316 / F316L
• ASTM A182 F321
• ASTM A182 F347
• EN 1.4301 / 1.4307 / 1.4401 / 1.4404
• DIN X5CrNi18-10 / X2CrNiMo17-12-2
• JIS SUS304 / SUS316
• GOST 08Cr18Ni10 / 12Cr18Ni10Ti
🔹 Size & Technical Range
• Size range: 1/2” – 60” (DN15 – DN1500)
• Pressure class: Class 150 / 300 / 600 / 900 / 1500 / 2500
• Facing: RF / FF / RTJ
• Manufacturing: Forged and CNC machined
• Custom dimensions according to drawings
🔹 Surface Treatment (Optional)
• Pickling & passivation
• Sand blasting
• Polished finish
• Anti-rust oil
• Epoxy coating (optional)
🔹 Applications
Stainless Steel Blind Flanges are widely used in piping systems that require corrosion resistance and secure isolation, including:
• Chemical and petrochemical plants
• Oil & gas pipelines
• Offshore platforms
• Power generation systems
• Water treatment and desalination plants
• Marine and shipbuilding industry
• Pressure vessels and heat exchangers
They are ideal for closing pipe ends, isolating pipeline sections, and allowing future system modification or inspection.
🔹 Quality Control & Certification
• Chemical composition analysis
• Mechanical property testing
• Dimensional inspection
• Visual inspection
• PMI testing (optional)
• NDT testing (UT / MT / PT upon request)
• EN 10204 3.1 / 3.2 certificates available
🔹 Packaging & Delivery
• Packed in seaworthy wooden cases or pallets
• Protective plastic covers on flange faces
• Anti-rust oil coating
• Clear marking: size, pressure class, material grade, heat number
• Short lead time for standard sizes
🔹 Why Choose Our Stainless Steel Blind Flanges
• Professional manufacturer and exporter for global B2B customers
• Full compliance with ASME / EN / DIN / JIS / GOST standards
• Stable quality and competitive pricing
• Custom fabrication based on drawings or project specifications
• Fast quotation and technical support
🔹 Request a Quote
To receive an accurate quotation, please provide:
• Size (DN or inch)
• Pressure rating (Class or PN)
• Material grade (304 / 316 / 316L, etc.)
• Standard (ASME / EN / DIN / GOST)
• Facing type (RF / FF / RTJ)
• Quantity
• Application or project details
Our technical sales team will respond quickly with a professional quotation.