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JF Engineering Products LLP

ANSI/ASME B16.5 BLIND FLANGES - Stainless Steel ASTM A182 316L, 321

Stainless Steel ASTM A182 F316/316L/316H Blind Flanges , Monel ASTM A564 400/K500 Blind Flanges , Nickel 200/201 Blind Flanges , ANSI B16.5 ASTM A182 Inconel 600/601/625 Blind Flanges , Incoloy 800/800H/800HT Blind Flanges , Titanium Gr1/Gr2/Gr5/gr11 Blind Flanges , SS ASTM A182 321, 904L Blind Flanges , SS ASTM A403 309S/310S/317L Blind Flanges , Carbon Steel ASTM A105 Blind Flanges, Duplex Steel ASTM A182 F44/F45/F51 Blind Flanges , Duplex Steel ASTM A182 F53/F55/F56 Blind Flanges , Alloy Steel F11/F22/F91 Blind Flanges

Blind Flanges are used for testing the flow of gas or liquid through a pipeline or vessel. It helps to close the end of piping systems or vessel openings. It allows easy access to the pipeline when there is a requirement to work done inside the line. They are used in high pressure applications available in all grades, materials, size and specifications.

Blind pipe flanges are typically provided with a raised face, flat face, or RTJ facing. The standard height is 1/16" when a raised face is required under 400#. The standard height is 1/4".for blind pipe flanges of 400# and above. JF Engineering manufactures blind pipe flanges in various materials such as stainless steel, carbon steel, alloy steel and monel according to the various standard ANSI/ASME/ASTM according to the customer requirement.

Specification - ASME B16.5 Blind Flange

Blind Flange

Size: 1/2"NB TO 24"NB IN
Class: 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS DIN Standard ND-6,10, 16, 25, 40 Etc.
Materials: Monel :
Grade: Monel 400, Monel K500, Monel R-405
Nickel :
Grade: Nickel 200, Nickel 201
Inconel :
Grade: Inconel 600, Inconel 601, Inconel 625, Inconel 718
Incoloy :
Grade: Incoloy 800, Inconel 800H, 800HT
Hastalloy :
Grade: Hastalloy B2, Hastalloy B3, Hastalloy C22, Hastalloy C276, Hastalloy X
Titanium :
Grade: Gr1, Gr2, Gr3, Gr5, Gr7, Gr11
Stainless Steel :
Grade: ASTM A182 F202, F304/304L/304H, F316/316L, F316H, F316TI, F310, F321, F904L
Carbon Steel :
Grade: ASTM A105/A105N, A350 LF1, LF2 CL1/CL2, LF3 CL1/CL2, A694 F42, F46, F48, F50, F52, F56, F60, F65, F70, A516.60, 65, 70 (Spectacle Blind Flange, Spacer Ring/Spade Flange), Steel RST37.2, C22.8
Duplex Steel:
Grade: ASTM / ASME A/SA 182 UNS F44, F45, F51, F53, F55, F60, F61
Alloy Steel:
Grade : ASTM A182 F1, F5, F9, F11, F22, F91
Value Added Service: CNC Machine, Customized Flanges
Coating/Surface Treatment: Anti-rust Paint, Oil Black Paint, Yellow Transparent, Zinc Plated, Cold and Hot Dip Galvanized
Dimension - ASME B16.5 Blind Flange

NPS 1/2

CL 150 300 600 900 1500 2500
90 95 95 120 120 135
B 9.6 12.7 14.3 22.3 22.3 30.2
11.2 14.3 20.7 28.7 28.7 36.6
35.1 35.1 35.1 35.1 35.1 35.1
60.3 66.7 66.7 82.6 82.6 88.9
4 4 4 4 4 4
15.9 15.9 15.9 22.2 22.2 22.2
Stud Bolts Diameter x Length
1/2 1/2 1/2 3/4 3/4 3/4
55 65 75 110 110 120
Other Diameters
NPS 1/2 3/4 1 2
3 4 6 8 10 12
14 16 18 20 24    


  • Dimensions are in millimeters unless otherwise indicated.
  • The length of the Stud Bolt does not include the height of the chamfers (points).

Marking and Packing

Products are packaged to ensure that there is no damage during transit. In case of exports, standard export packaging is done in wooden cases. All flanges are marked with Grade, Lot No, Size, Degree and our trade mark. On special requests we can also, make custom marking on our products.

Quality Assurance

At JF Engineering Products LLP, all fittings and flanges are subject to strict inspection at each stage of the production process, from starting material purchasing to product dispatch. They are visually examined for conformity to ASTM, ASME, MSS, DIN, EN, and JIS codes and standards. Upon request, official certified Inspection Agencies can be called in to witness the material reports, dimensions and quality conformity of products.

Test Certificates

Manufacturer Test Certificate as per EN 10204 / 3.1B, Raw Materials Certificate, 100% Radiography Test Report, Third Party Inspection Report

Shipping Policy

Delivery time and delivery dates are based on the "type and quantity" of steel ordered. Our sales team will provide a delivery schedule when quoting to you. On rare occasions the delivery schedule may change so please check with our sales department when placing any orders.

Orders will be sent out within 2-3 business days, and may take up to 5-10 business days in transit. If Flange is out of stock, orders may take up to 2-4 weeks to ship. JF Engineering Products LLP will notify buyer if this situation occurs..

Uses & Application

JF Engineering Products LLP take immensure pleasure in introducing itself as one of the leading Manufacturer & Exporter of high quality ASME B16.5 Blind Flange to meet the customer ultimate requirements in the fields of:

Chemical Oil Mills Petrochemical Mining Refineries Construction
Fertilizers Shipbuilding Power Plant Steel Plant Nuclear Power Offshore
Oil & Gas Defence Paper Ports Breweries Railway
Cement Engineering Co. Sugar & Government Org. etc.

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