ASME B16.47B Class 900 blind flange is a high-pressure, large-diameter pipe closure component. It is a solid disk without a bore, mainly used to seal the end of piping systems, isolate pipeline sections, or block unused nozzles, ensuring the safety and integrity of high-pressure industrial operations. HT PIPE supply all different types and scales of flanges. Please feel free to contact us for further product information and pricing.
Core Advantages of Our ASME B16.47B Class 900 Blind Flange
Strict Quality Control
Adopt precision forging and CNC machining processes to ensure dimensional accuracy and surface finish, with no defects such as cracks, pores, or inclusions. Each product undergoes strict testing, including chemical analysis, tensile testing, ultrasonic testing (UT), and eddy current testing (ET), with EN 10204 Type 3.1 or 3.2 inspection certificates provided to ensure product qualification.
Cost-Effective Design
As part of ASME B16.47 Series B, it has a thinner profile and lighter weight compared to Series A, balancing performance and economy in less demanding high-pressure setups, reducing material and transportation costs while ensuring pressure-bearing capacity.
Easy Installation and Maintenance
Designed with standard bolt holes and matching dimensions, it can be quickly bolted to mating flanges without complex installation tools or professional skills. It can be easily removed for pipeline inspection, pressure testing, or future expansion, reducing maintenance time and labor costs.
Wide Application Compatibility
Suitable for oil and gas distribution, refineries, chemical processing plants, power utilities, offshore platforms, and nuclear power plants, adapting to various harsh working environments such as high pressure, high temperature, and corrosive media.
Long Service Life
High-quality materials and precision manufacturing ensure excellent wear resistance, corrosion resistance, and pressure resistance, reducing the frequency of replacement and maintenance, lowering long-term operation costs for customers.
ASME B16.47B Class 900 blind flange Size
NOTES:
Dimensions are in millimeters unless otherwise noted.
(1) The minimum flange thickness does not include the raised face thickness.
(2) The length of the stud bolt does not include the height of the points.
(3) Bolt lengths not shown in the table may be determined in accordance with Nonmandatory Appendix D .
