Bhansali Enterprises is a notable manufacturer and supplier of Duplex and Super Duplex fasteners in Mumbai, India. Duplex and Super Duplex Fasteners are types of corrosion-resistant fasteners that find extensive use in various industries due to their superior mechanical properties and resistance to corrosion in challenging environments. Duplex stainless steels are characterized by a two-phase microstructure consisting of both austenitic (chromium-nickel) and ferritic (chromium-molybdenum) phases. This dual-phase structure imparts a unique combination of high strength and excellent corrosion resistance.

Common types of Duplex and Super Duplex fasteners include studs, bolts, nuts, washers, and screws, each serving specific purposes in construction and engineering applications.

Duplex fasteners typically include grades such as UNS S31803 (2205) and UNS S32205, among others. These fasteners are known for their durability and are commonly used in applications where resistance to chloride stress corrosion cracking is essential. They are widely employed in chemical processing, oil and gas, and marine engineering.

Super Duplex fasteners take corrosion resistance to the next level by incorporating even higher levels of chromium, molybdenum, and nitrogen. Grades like UNS S32750 (2507) and UNS S32760 offer outstanding corrosion resistance in aggressive environments, such as those containing acids, seawater, and other harsh chemicals. The superior strength and corrosion resistance of Super Duplex fasteners makes them suitable for use in demanding applications, including offshore and subsea oil and gas operations, chemical processing plants, and desalination facilities.

Duplex Steel Nuts

The features of Duplex and Super Duplex fasteners include high tensile strength, excellent corrosion resistance, good weldability, and a cost-effective balance of properties compared to other stainless steel grades. These fasteners exhibit enhanced toughness and durability, making them ideal for use in environments with high temperatures, corrosive media, and high stress.

Applications of Duplex and Super Duplex fasteners span a wide range of industries. In the oil and gas sector, they are commonly used in pipelines, offshore platforms, and subsea equipment. Chemical processing plants utilize these Duplex fasteners for their resistance to corrosive chemicals. The marine industry benefits from their ability to withstand the harsh conditions of seawater. Additionally, Super Duplex fasteners find applications in desalination plants, pulp and paper mills, and various other industrial settings where corrosion resistance and high strength are paramount.

Bhansali Enterprises Specifications Of Duplex Steel Fasteners

Standard ASTM A479 / SA 479
Bolt / Screw Size M3 – M56 | 3/6″ to 2″ | Custom Sizes
Nuts Size M3 – M56 | 3/6″ to 2″ | Custom Sizes4
Washers Size M3 – M56 | 3/6″ to 2″ | Custom Sizes
Machine Screws Size M1.6 – M12
Self Tapping Screw Size No.2 – No. 14
Length 3 mm to 200 mm
Threads UNF, BSW, BSF, METRIC, UNC, or as required
Fasteners DIN : DIN 934, DIN 931, DIN 970, DIN 933,
ISO : JIS standards, ISO 4033, ISO 4032,
ANSI – American National Standards Institute ASME B18.5, ANSI B 28.2.4 1M, as per defined in ASME B16.5 standard SS Stud Bolt length ANSI B 18.2.4 2M, as per defined in ASME B18.2.2 SS Hex nuts
Form Hex, Threading, Square, Round as per Gauge Etc.
Threads Configuration ASME B1.1 2A/3A – 2B/3B Inch Unified Threads and B1.13M 6h-6G Metric Coarse Threads
Certification Dual Certified As per ASTM & ASME Codes
Threads Unless otherwise specified, the threads shall be rolled or cut and tapped horizontally or vertically
Test Certificate as per EN 10204 / 3.1 Manufacturer Test Certificate
Additional Certifications PED 97/23/EC Certified, Merkblatt AD 2000 W2 Certified
Production process M24-M100: hot forging , M2-M24: Cold Forging, for custom-made connecting element machining and CNC
Grades Duplex-S31803, S32205, Super Duplex-S32750, S32760, S32950

Bhansali Enterprises Available Variations in Super Duplex Steel Fasteners

Duplex Steel Nuts


Duplex Steel Nuts

Duplex Steel Bolts


Super Duplex Steel Bolts

Duplex Steel Washers


Duplex Steel Washers

Duplex Steel Screws


Super Duplex Steel Screws

Duplex Steel Stud Bolts

Stud Bolts

Duplex Steel Stud Bolts

Duplex Steel Anchor Bolts

Anchor Bolts

Duplex Steel Anchor Bolts

Bhansali EnterprisesOther Types Of Duplex Steel Fasteners

  • Duplex Fasteners Manufacturer
  • Duplex 2205 Fasteners
  • Super Duplex 2507 Fasteners
  • Super Duplex Fasteners
  • Duplex 2205 Bolt Threded Fasteners
  • Duplex Fastener
  • Super Duplex 2507 Fasteners
  • Duplex Steel Fasteners
  • Duplex Fasteners
  • Super Duplex Stainless Steel Fasteners
  • Duplex Steel Fasteners Grade
  • Duplex Stainless Steel Bolts
  • Duplex 2205 Fastener
  • Duplex Fasteners Manufacturers In India

Bhansali EnterprisesDuplex Steel Fasteners Technical Data

Bhansali EnterprisesDuplex Steel Fasteners Industrial Application

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  • Oil & Gas Industry

  • Power Plant Generation

  • Marine Industry

  • Petrochemical Industry

  • Chemical Industry

  • Aerospace Industry

  • Sugar Industry

Bhansali EnterprisesDuplex Steel Fasteners Price Details

Prices for Duplex Steel Fasteners Products are very affordable. Please click on the request a quote button or Click Here to request the updated price list and ready stock information along with your requirement. Bhansali Enterprise Duplex Steel maintains a stock of all standard items and can export them at the best price ASME SA479 Duplex Steel Fasteners, Stud, Bolts, Nuts, Washer, Screw etc.

Bhansali EnterprisesWe Supply Super Duplex Steel Fasteners in the following Cities & Countries

India UAE Australia Canada Germany Russia France Indonesia Kuwait United Kingdom (Uk) Turkey
Mumbai Dubai Melbourne Ottawa Berlin Moscow Paris Jakarta Hawally London Istanbul
Delhi Abu Dhabi Sydney Quebec City Hamburg Saint Petersburg Lyon Bandung Al Ahmadi Liverpool Antalya
Bangalore Sharjah Brisbane Toronto Munich Kazan Lille Makassar Al Jahra Birmingham Izmir
Hyderabad Al Ain Perth Montreal Augsburg Chelyabinsk Strasbourg Surabaya Salmiya Bristol Trabzon
Ahmedabad Ajman Adelaide Winnipeg Cologne Novosibirsk Rouen Medan Fahaheel Newcastle upon Tyne Fethiye
Chennai Fujairah Hobart Mississauga Düsseldorf Omsk Nice Jayapura Fintas Manchester Ankara
Kolkata Khor Fakkan Darwin Vancouver Dortmund Krasnodar Bordeaux Yogyakarta Sabah Al-Salem Edinburgh Bursa
Lucknow Ruwais Ballarat Brampton Essen Volgograd Marseille Batam Mahboula Oxford Edirne
Bhopal Ghayathi Bendigo Hamilton Bremen Saratov Lyon Banjarmasin Abdali Southampton Konya
Navi Mumbai Hatta Mackay Surrey Dresden Barnaul Toulouse Denpasar Jabriya Glasgow Denizli

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