ASME B16.5 Industrial Flanges: Dimensions | Specifications | Material Grade | Standards | About Industrial Flange | All Product Types
Nutech Overseas is a reliable manufacturer and exporter of industrial flanges in Bahrain, offering high-quality products for refinery, marine, and industrial applications. Our flanges are designed to meet global standards, ensuring strength, durability, and corrosion resistance.
Industrial flanges connect piping systems and provide leak-proof joints essential for industrial operations.
We supply all major flange types including Slip-On, Weld Neck, Blind, Socket Weld, Threaded, RTJ, Lap Joint, and Spectacle Blind.
Flanges are used in Bahrain’s refineries, marine systems, and industrial plants.
Available in Carbon Steel, Stainless Steel, Alloy Steel, Duplex, and Nickel alloys.
ASME, ANSI, EN, DIN, ISO compliant.
We export flanges to Bahrain with complete documentation.
Given Bahrain's island geography and its extensive maritime and offshore oil activities, our industrial flanges are heavily utilized in marine environments. We specialize in supplying Cupro-Nickel (Copper-Nickel 90/10 and 70/30) and Monel 400 flanges which provide unparalleled resistance to seawater corrosion, biofouling, and stress corrosion cracking in desalination plants and offshore platforms.
Bahrain is home to one of the world's largest aluminum smelters. To support this key industry, we provide industrial flanges that can withstand the abrasive and aggressive chemicals used in the refining of bauxite and the smelting process. Our heavy-wall flanges and specialized alloy flanges ensure continuous, safe operation of the piping systems within these massive industrial complexes.
In all structural and piping assemblies, dimensional accuracy is crucial for quick and stress-free installation. Our flanges undergo rigorous automated inspections. The bolt hole pitch circle diameter (PCD), flange thickness, and hub tapers are verified to be strictly within the tolerances specified by ASME B16.5, reducing fit-up time and welding costs for contractors across Bahrain.
To support emergency maintenance, shutdowns, and turnaround projects (TAR) in Bahrain's refineries, we offer rapid response manufacturing. We maintain an extensive inventory of raw steel billets and forgings, allowing us to quickly machine and dispatch flanges, minimizing costly downtime for our clients and keeping essential industrial operations running smoothly.
For complete technical details, including dimensions, pressure rating classes, weight charts, sizes, tolerances, and material specifications of our ANSI B16.5 Industrial Flanges, please download the full Catalog PDF below.
| Specification | Details |
|---|---|
| Type | Slip-On Flange (SO), Raised Face (SORF), Flat Face (SOFF), RTJ (Ring Type Joint) |
| Design Standard | ASME B16.5, ANSI B16.5, ASME B16.47 Series A & B, MSS-SP-44, BS 4504, EN 1092-1, DIN |
| Size Range | ½″ NB to 48″ NB (DN15 to DN1200) |
| Pressure Ratings | Class 150, 300, 600, 900, 1500, 2500 (PN6 to PN400 in EN standard) |
| Face Type | Raised Face (RF), Flat Face (FF), Ring Type Joint (RTJ) |
| Flange Thickness | As per ASME B16.5 / B16.47 or EN 1092-1 dimensional standards and pressure class |
| Bore & Hub Design | Slip-on design with pipe inserted before welding; beveled or smooth bore as per requirement |
| Welding Type | Fillet weld on both inner and outer side of pipe-to-flange connection |
| Surface Finish | Stock finish (3.2–6.3 μm), Smooth finish, Serrated concentric or spiral finish as per RF/FF |
| Gasket Compatibility | Spiral wound, Ring gaskets, Full face or raised face gaskets based on flange type |
| Drilling Template | Conforms to ANSI B16.5 or other applicable flange drilling standards |
| Coating / Protection | Rust preventive oil, Black paint, Yellow transparent varnish, Hot-dip galvanized (on request) |
| Dimensional Tolerances | As per ASME B16.5, EN 1092-1, MSS-SP-44 or client drawing/specifications |
| Testing & Inspection | Dimensional check, Hydrostatic test, PMI, Visual inspection, NDT (UT/MPI as required) |
| Certification | EN 10204 Type 3.1 / 3.2, IBR Approval, ISO 9001, PED 2014/68/EU, NACE MR0175 / ISO 15156, ISO 9001 |
| Application Industries | Oil & Gas, Petrochemical, Power Generation, Water Treatment, Pulp & Paper, Shipbuilding, HVAC, Offshore |
| Origin | Made in India (by Nutech Overseas) |
| Export Network | USA, Europe, and Middle East |
| Material Category | Slip-On Flange Grades |
|---|---|
| Stainless Steel Slip-On Flange | ASTM A182 F304 / F304L / F304H, F316 / F316L / F316Ti, F310, F309S, F317 / F317L, F321 / F321H, F347 / F347H, F904L, ASTM A351 CF3 / CF3M / CF8 / CF8M / CF8C, DIN 1.4301, 1.4306, 1.4307, 1.4311, 1.4401, 1.4404, 1.4408, 1.4409, 1.4541, 1.4571, 1.4550, 1.4435, 1.4539 |
| Duplex Steel Slip-On Flange | ASTM A182 F51 / F52 / F53 / F54 / F55 / F57 / F59 / F60 / F61, UNS S31803 / S32205 |
| Super Duplex Steel Slip-On Flange | ASTM A182 F53 / F55 / F57 / F59 / F60 / F61, UNS S32750 / S32760 |
| Carbon Steel Slip-On Flange | ASTM A105 / A105N, ASTM A350 LF2, ASTM A694 F52 / F56 / F60 / F65 / F70 / F80, ASTM A216 WCB, DIN 1.0460 / 1.0402 / 1.0619, Die Steel, Mild Steel |
| Alloy Steel Slip-On Flange | ASTM A182 F5 / F9 / F11 / F12 / F22 / F91, AISI 4130 / 4140 |
| Nickel Alloy Slip-On Flange | Nickel 200 / 201, ASTM B564 |
| Monel Slip-On Flange | Monel 400 (UNS N04400), Monel K500 (UNS N05500), ASTM B564 |
| Inconel Slip-On Flange | Inconel 600 / 601 / 625 / 690 / 718 / 783 / X750, ASTM B564 |
| Incoloy Slip-On Flange | Incoloy 800 / 800H / 800HT (UNS N08800), Incoloy 825 (UNS N08825), Incoloy 925, ASTM B564 |
| Hastelloy Slip-On Flange | Hastelloy C276 (UNS N10276), C22 (UNS N06022), C4, C2000, B2, B3, X, ASTM B564 |
| Alloy 20 Slip-On Flange | Alloy 20 / 20Cb-3, Carpenter® 20, ASTM B462 |
| 254 SMO Slip-On Flange | SMO 254 / 6Mo, UNS S31254, DIN 1.4547, ASTM A182 |
| Copper Nickel Slip-On Flange | Copper Nickel 90/10 (C70600), 70/30 (C71500), UNS C71640, ASTM B61 / B62 / B151 / B152 |
| Copper Slip-On Flange | TP1, TP2, T1, T2, C10100–C12300, C14200–C17200, C21000–C71520, including C10930, C11000, C11400, C12000, C12200, C26000, C28000, C33000, C44300, C70600, etc. |
| Brass Slip-On Flange | Grades 3602, 2604, H59, H62, etc. |
| Aluminium Slip-On Flange | Aluminium Grades 5052, 6061, 6063, 2017, 7075, etc. |
| Titanium Slip-On Flange | ASTM B381 Gr.1 / Gr.2 / Gr.4 / Gr.5 / Gr.7, UNS R50250 / R50400 / R50550 / R50700 / R52400 / R53400 / R56320 / R56400 |
| Other Special Grades | Al6XN, Tin Bronze, Aluminium Bronze, Lead Bronze, Nimonic 75 / 80A / 90 |
Industrial flanges connect piping systems securely.
We supply flanges across Bahrain with full export support.