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F304L 26”Series B Blind Flange (BL) Stainless Steel 75-900# ASME B16.47

Pressure Ratings:
75lbs
150 lbs
300 lbs
400lbs
600 lbs
900 lbs
NPS:
26"
28"
30"
32"
34"
36"
38"
40"
42"
44"
46"
48"
Material：:
304
304L
316
316L
Custom
Quantity:
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ASME B16.47 Series B Blind Flange (BL)
Standard: ASME B16.47
Material Standard: ASME A182
Manufacturing Facility Standard: ISO 9001:2015 , GB/T19001-2016
Certification: Material Test Reports (MTRS) and Certificates of Conformity (COC) are available upon request.

Product Overview

F304L 26”Series B Blind Flange (BL) Stainless Steel 75-900# ASME B16.47

The F304L 26”Series B Blind Flange (BL) Stainless Steel 75-900# ASME B16.47 is a high-quality industrial piping component manufactured to meet stringent international standards. Designed for critical applications across various industries, this flange offers exceptional performance, reliability, and longevity.

Our stainless steel flanges are precision-engineered using advanced manufacturing techniques and premium-grade materials. Each flange undergoes rigorous quality control and testing to ensure compliance with dimensional tolerances and pressure ratings specified by international standards.

This high-performance stainless blind flange provides reliable pipeline termination and pressure containment for industrial systems. Manufactured to ASME B16.47 Series B standards, this durable blind pipe flange ensures superior sealing capability across pressure ratings from 75 to 900#. The robust construction of this stainless blind flange guarantees excellent corrosion resistance and structural integrity in demanding environments. Ideal for chemical processing, oil and gas applications, this versatile blind pipe flange facilitates easy system maintenance and future expansion. The precision-machined sealing surface of this stainless blind flange ensures bubble-tight sealing when properly installed. This essential blind pipe flange delivers long-term reliability where pressure isolation and system safety are critical requirements in piping infrastructure.

Key Features

  • Premium Quality Materials: Manufactured from certified stainless steel grades ensuring excellent corrosion resistance and durability
  • Precision Engineering: CNC machined to exact specifications with tight tolerances meeting international standards
  • Comprehensive Size Range: Available in multiple sizes and pressure ratings to suit various piping applications
  • Industry Compliance: Fully compliant with ASME, EN, DIN, JIS, and other international standards
  • Versatile Applications: Suitable for oil & gas, chemical processing, power generation, water treatment, and other industrial applications
  • Quality Assurance: 100% inspection and testing with comprehensive documentation and traceability
  • Customization Available: Custom manufacturing services available for special requirements and non-standard dimensions
  • Global Supply: Worldwide shipping with experienced logistics support ensuring safe and timely delivery

Dimensions & Sizes

​​​​stainless blind flange

Dimensions & Sizes

PipeFlange DataHub DataRaised FaceDrilling DataRadius
Nominal Pipe SizeOverall DiameterWNF FlangeThickness minBlind FlangeThickness minOverall LengthWNFDiameter at Weld BevelHub DiameterFace DiameterNumber of HolesBolt Hole DiameterDiameter of Circle of HolesFillet
inininininininininin
mmmmmmmmmmmmmmmmmmmm
2630.00 762.001.31 33.271.31 33.272.31 58.6726.06 661.9226.62 676.1527.75 704.85360.75 19.0528.50 723.900.31 7.87
2832.00 812.801.31 33.271.31 33.272.44 61.9828.06 712.7228.62 726.9529.75 755.65400.75 19.0530.50 774.700.31 7.87
3034.00 863.601.31 33.271.31 33.272.56 65.0230.06 763.5230.62 777.7531.75 806.45440.75 19.0532.50 825.500.31 7.87
3236.00 914.401.38 35.051.44 36.582.75 69.8532.06 814.3232.62 828.5533.75 857.25480.75 19.0534.50 876.300.31 7.87
3438.00 965.201.38 35.051.50 38.102.88 73.1534.06 865.1234.62 879.3535.75 908.05520.75 19.0536.50 927.100.31 7.87
3640.69 1033.51.44 36.581.67 42.423.38 85.8536.06 915.9236.81 934.9738.00 965.20400.88 22.3539.06 992.120.38 9.65
3842.69 1084.31.50 38.101.75 44.453.50 88.9038.06 966.7238.81 985.7740.00 1016.0400.88 22.3541.06 1042.90.38 9.65
4044.69 1135.11.50 38.101.75 44.453.62 91.9540.06 1017.540.81 1036.5742.0 01066.8440.88 22.3543.06 1093.70.38 9.65
4246.69 1185.91.56 39.621.88 47.753.75 95.2542.06 1068.342.81 1087.3744.00 1117.6480.88 22.3545.06 1144.50.38 9.65
4449.25 1251.01.69 42.931.94 49.284.12 104.6544.06 1119.144.88 1139.9546.25 1174.8361.00 25.4047.38 1203.50.38 9.65
4651.25 1301.81.75 44.452.00 50.804.25 107.9546.06 1169.946.88 1190.7548.25 1225.6401.00 25.4049.38 1254.30.38 9.65
4853.25 1352.61.81 45.972.12 53.854.38 111.2548.06 1220.748.88 1241.5550.25 1276.4441.00 25.4051.38 1305.10.38 9.65
Class75

Notes:

ASME B16.47 Series B flanges are API 605 flanges. API 605 has been cancelled.

Class 400 Series A dimensions at NPS 38 and larger also apply to Class 400 Series B flanges.

Dimension B is to be specified by the purchaser. It corresponds to the pipe inside diameter.

Flat face flanges may be provided at full thickness, C, or with raised face removed (the latter is nonstandard).

WNF = Weld Neck Flange. -The large end of the hub may be straight or tapered.

This flange is available in a comprehensive range of sizes and pressure ratings to accommodate diverse piping system requirements. Our manufacturing capabilities allow us to produce both standard and custom dimensions.

Available Sizes: Wide range from small bore to large diameter

Pressure Ratings: Multiple pressure classes available (Class 150, 300, 600, 900, 1500, 2500, and PN ratings)

Connection Types: Suitable for welding, threading, or slip-on connections depending on flange type

For detailed dimension tables and technical drawings, please contact our technical support team. We can provide comprehensive dimensional specifications according to your required standard (ASME, EN, DIN, JIS, etc.).

Applications

This flange is ideal for use in:

  • Oil & Gas Industry: Upstream, midstream, and downstream applications
  • Chemical & Petrochemical: Process piping, reactors, and storage systems
  • Power Generation: Conventional and renewable energy facilities
  • Water Treatment: Municipal and industrial water systems
  • Pharmaceutical: Sanitary process applications
  • Food & Beverage: Hygienic piping systems
  • Marine & Offshore: Shipbuilding and offshore platforms
  • General Industry: Manufacturing, HVAC, and building services

Quality Assurance

We maintain the highest standards of quality control throughout the manufacturing process:

  • ISO 9001:2015 certified manufacturing facility
  • 100% material traceability with heat number tracking
  • Comprehensive testing including chemical analysis, mechanical testing, and non-destructive examination
  • Third-party inspection available (TPI, LPI, SGS, BV, etc.)
  • Complete documentation package including MTC 3.1, test certificates, and dimension reports

FAQ

1. What materials are used for F304L 26”Series B Blind Flange?

Our F304L 26”Series B Blind Flange is manufactured from high-quality stainless steel grades including F304, F304L, F316, F316L, and other equivalent materials according to international standards. Material certificates are provided with each order.

2. What standards does this flange comply with?

This flange is manufactured in compliance with major international standards including ASME B16.5, ASME B16.47, EN 1092-1, DIN standards, JIS B2220, and HG/T standards. We can provide third-party inspection certificates upon request.

3. What is the delivery time?

Standard sizes are typically available from stock with 3-7 days delivery. Custom orders require 15-30 days depending on specifications and quantity. Rush orders can be accommodated with additional coordination.

4. Can you provide custom dimensions?

Yes, we offer custom manufacturing services. We can produce flanges according to your specific drawings and requirements. Our engineering team can also assist with design optimization.

5. What quality certifications do you provide?

We provide comprehensive documentation including Material Test Certificates (MTC), Third-Party Inspection Reports (TPI), Dimension Reports, and Pressure Test Certificates. All products comply with international quality standards.

Why Choose Our Flanges?

With decades of experience in manufacturing industrial piping components, we have established ourselves as a trusted supplier of high-quality flanges worldwide. Our commitment to excellence is reflected in:

  • Technical Expertise: Experienced engineering team providing technical support and custom solutions
  • Manufacturing Excellence: State-of-the-art facilities with advanced CNC machining and testing equipment
  • Quality Focus: Rigorous quality control at every stage from raw material to finished product
  • Customer Service: Responsive support team ensuring smooth order processing and after-sales service
  • Competitive Pricing: Direct manufacturer pricing with no intermediary markups
  • On-Time Delivery: Efficient production planning and reliable logistics partnerships

CONTACT US

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