Apple Steels is a prominent manufacturer and supplier of Duplex and Super Duplex Fasteners. Committed to quality and reliability, we offer a comprehensive range of fastening solutions tailored to diverse industrial needs. From bolts to nuts, trust us for top-notch products engineered for performance and durability.

Sumit Impex is a Supplier of Duplex & Super Duplex Fasteners, Biggest Stockist of Duplex & Super Duplex Fasteners as per Standards in Mumbai, India.

Duplex Fasteners, Superduplex Fasteners, Duplex Bolts, Duplex Steel Fasteners in Best Price, Duplex Nuts, Duplex Screws, Duplex Washers, Superduplex Washers, Duplex & Super Duplex Bolts

Duplex and Super Duplex fasteners are highly corrosion-resistant, making them ideal for harsh environments such as marine and chemical industries. They find extensive use in offshore drilling rigs, oil and gas pipelines, desalination plants, and chemical processing facilities where corrosion resistance is critical. These fasteners offer superior strength and durability, ensuring long-term performance in demanding applications.

At Sumit Impex, we manufacture high-quality Duplex and Super Duplex fasteners. Our products undergo rigorous testing, including micro and macro tests, flaring tests, and pitting resistance tests, ensuring superior performance and durability. We also conduct PMI testing for material identification and 100% radiography tests to detect defects. With a dedication to quality and precision, we deliver reliable fastening solutions that meet the stringent requirements of various industries.

Duplex & Super Duplex Fasteners

Standard Specification For Duplex & Super duplex Fasteners

Specifications ASTM F467 / ASME SF467
Fasteners size Bolt / Screw Size : M3 – M56 | 3/6″ to 2″ | Custom Sizes
Nuts Size : M3 – M56 | 3/6″ to 2″ | Custom Sizes
Washers Size : M3 – M56 | 3/6″ to 2″ | Custom Sizes
Machine Screws Size : M1.6 – M12
Self Tapping Screw Size : No.2 – No. 14
Fasteners Length 3 mm to 200 mm
Fastener Threads UNF, BSW, BSF, METRIC, UNC or as required
Standard of Stainless Steel Fasteners DIN : DIN 934, DIN 931, DIN 970, DIN 933
UTS : UNEF, NPT, UNC, UNS, UNF, NPTF
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
Dimensions DIN 931, 933, 934, 7991, 976, 125, ASME B18.2.1, B18.3
Surface Coating Ptfe Coated Stainless Steel Fasteners
Phosphate Coating
Teflon Coating
Zinc Coating
Hot Dipped Galvanizing Coating
Cadmium Coating
Xylon Coating
Fasteners Finishing Stainless steel : Self-Colour, Passivated, Bright Zinc Plated (BZP), Hot Dip Galvanised (HDG), Stainless Steel, Sherardized, some special one like DACROMET Geometry and Mechanically Applied coating ,Dacroment, nickel plated, anodizing, plated zinc-nickel
Zinc (blue, black, yellow, white), black oxide.

Duplex & Super Duplex Fasteners Types

Stud Bolts

Stud Bolts

Bolts

Bolts

Nuts

Nuts

Washers

Washers

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Duplex & Super Duplex Fasteners Applications

Export & Supply Destinations Of Duplex & Super Duplex Fasteners

Mongolia, United Arab Emirates, Bangladesh, China, Nepal, Singapore, Qatar, Japan, Bahrain, Malaysia, Russia, Kyrgyzstan, Iran, Turkey, Philippines, Vietnam, Thailand, Macau, Armenia, Bhutan, Israel, Iraq, Azerbaijan, Taiwan, Saudi Arabia, Kuwait, Maldives, Afghanistan, Lebanon, British, Egypt, India, South Korea, North Korea, Myanmar, Sri Lanka, Indonesia, Hong Kong, Oman, Jordan.

Germany, Switzerland, Czechia/Czech Republic, Malta, Austria, Cyprus, Liechtenstein, Denmark, Belgium, Croatia, Poland, Estonia, Russia, Spain, Luxembourg, Bulgaria, Ukraine, Sweden, Turkey, Finland, Greece, France, Monaco, Latvia, Serbia, Norway, United Kingdom, Romania, Slovakia, Italy, Azerbaijan, Belarus, Netherlands, Hungary, Lithuania, Moldova, Ireland, Portugal.

Madagascar, Zambia, Tunisia, Cameroon, Central African Republic, Nigeria, Egypt, Seychelles, Algeria, Zimbabwe, Burkina Faso, Mozambique, Niger, Burundi, Mauritius, Tanzania, Uganda, Rwanda, Libya, Kenya, Morocco, Namibia, Angola, Liberia, South Africa, Senegal, Eswatini, Gambia, Ethiopia, Mauritania, Botswana.

Trinidad and Tobago, United States of America, Panama, Saint Vincent and the Grenadines, Honduras, Dominica, Barbados, Bahamas, Costa Rica, Guatemala, Antigua and Barbuda, Grenada, Saint Lucia, El Salvador, Jamaica, Dominican Republic, Cuba, Mexico, Belize, Canada, Nicaragua, Haiti.

Brazil, Guyana, Venezuela, Paraguay, Suriname, Peru, Uruguay, Colombia, Bolivia, Argentina, Chile, Ecuador.