Sumit Impex is a leading manufacturer, supplier, and exporter of Duplex 31803 Nuts, providing customers with various options globally. Our range includes standard-sized nuts and customized dimensions to suit specific requirements. Additionally, we ensure superior quality by adhering to rigorous manufacturing standards, ensuring that our nuts meet the highest industry standards with a commitment to excellence and customer satisfaction.

Sumit Impex is a Supplier of Duplex Steel 31803 Nuts, Biggest Stockist of S31803 DSS Nuts as per Standards in Mumbai, India.

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DSS S31803 Nuts, Duplex Steel 31803 Hex Nuts, DSS 31803 Dome Nuts, Duplex S31803 Hex Head Nuts, UNS S31803 Heavy Hex Nuts, Duplex Steel S31803 Eye Nuts, Duplex Steel S31803 Nylon Insert Nuts, Duplex Steel 31803 Nuts Manufacturer.

Duplex 31803 nuts are fasteners made from Duplex 31803, a stainless steel alloy known for its excellent corrosion resistance and high strength. These nuts find extensive use in industries such as offshore, chemical processing, and marine engineering due to their outstanding performance in challenging environments. With a balanced microstructure containing both austenitic and ferritic phases, Duplex 31803 nuts offer exceptional resistance to corrosion, pitting, and stress corrosion cracking, making them ideal for critical applications where reliability is essential.

At Sumit Impex, we prioritize quality, subjecting all our materials to thorough testing before delivery. These include Hardness Test, Chemical Analysis, PMI Testing, Micro and Macro Test, Flaring Test, Pitting Resistance Test. Additionally, we provide essential paperwork such as invoices, packing lists, and a legally recognized Certificate of Origin. To ensure complete client satisfaction, we also offer third-party inspection certificates.

Duplex Steel 31803 Nuts

Duplex Steel S31803 Nuts Specifications

Specifications ASTM A479 & ASME SA479
Nut (DIA)
  • Metric: M6 – M110
  • Inch: 1/4″ – 4.5″
Nuts International Standard IS, ANSI, ASTM DIN, ISO, JIS, GB, ASME, BS, UNI
Threads BSF, UNF METRIC, UNC, UNEF, BSW or as required
ASME/ ANSI – American Standard
  • ANSI B 28.2.4 1M
  • ANSI B 18.2.4 2M
  • ASME B18.5
  • ASME B18.2.2
DIN German Standard DIN 933, DIN 931, DIN 970, DIN 934
ISO Standard ISO 4033, : ISO 4032, JIS standards
Head Drive style Phillips/ Slot, Phillips, Oval, Flat 82 degree, Pan, flat undercut, Round, Truss, flat head 100 degree, binding, fillister head, indented hex head, Slotted, Six-Lobe
MTC (Manufacturer Test Certificate) EN 10204 / 3.1
Finishing 
  • Zinc white, (yellow, black, blue), black oxide,
  • Dacroment, Geometry, plated zinc-nickel, anodizing, nickel plated,
  • Stainless steel: Passivated Self-Colour, Bright Zinc Plated (BZP),
  • Hot Dip Galvanised (HDG), Sherardized, DACROMET and Mechanically Applied coating
Production Process
  • M2-M24: Cold Forging, hot forging
  • M24-M100, machining and CNC for Customized connecting element
Nuts Coating
  • Xylon Coated Fasteners
  • Phosphate Coated Fasteners
  • Hot Dipped Galvanizing Coated Fasteners
  • Teflon Coated Fasteners
  • Zinc Coated Fasteners
  • Cadmium Coated Fasteners
  • Ptfe Coated (Teflon) Fasteners
Packing Wooden Pallet, Canton, Carton / Small Box or as required

Duplex Steel 31803 Nuts Types

Heavy Hex Nuts

Heavy Hex Nuts

Square Nuts

Square Nuts

Wing Nuts

Wing Nuts

Coupling Nuts

Coupling Nuts

Acorn Nuts

Acorn Nuts

Panel Nuts

Panel Nuts

Nyloc Nuts

Nyloc Nuts

Self Locking Nuts

Self Locking Nuts

Duplex Steel S31803 Nuts Equivalent Grades

STANDARD UNS WNR.
Duplex Steel S31803 S31803 1.4462

Duplex Steel S31803 Nuts Chemical Composition

Grade C% Mn% Si% P% S% Cr% Ni% Mo% N%
S31803 0.030 2.00 1.00 0.030 0.020 21.0-23.0 4.5-6.5 2.5-3.5 0.08-0.20

Duplex Steel 31803 Nuts Mechanical Properties

Tensile Strength, ksi 90 min
0.2% Yield Strength, ksi 65 min
Elongation, % 25 min
Hardness [HRC] 293 max

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S32205 Duplex Steel Nuts Applications

Food Processing Industry

Hydraulic Applications

Offshore Pipelines & Pipe Works

Oil & Gas Industrires

Petrochemical Industry

Piping Systems

Power Plant Industry

Pulp & Paper Industry

Refining Industry

shipbuilding-industries

Chemical Industries

Construction Industries

Export & Supply Destinations Of DSS 31803 Nuts

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

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

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

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

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