[email protected]

9920228653

Linkedin
Instagram
317L Round Bar

Duplex Fasteners

Home 9 FASTENERS 9 DUPLEX 9 DUPLEX FASTENERS
DUPLEX FASTENERS

Duplex Stainless Steel Fasteners Manufacturer in India, UNS S31803 Bolts, ASTM A479 UNS S31803 Bolts, Buy Duplex 2205 Bolts, Duplex Fasteners Manufacturers in India

Detailed Information:

Ratna Exports specializes in manufacturing and supplying ASTM A479 UNS S31803 Duplex Steel Bolts crafted from high-grade stainless steel. Duplex steel has gained popularity as a replacement for other steel types due to its exceptional mechanical properties, cost-effectiveness, and corrosion resistance. Our range includes various Duplex 2205 Fasteners such as bolts, nuts, washers, screws, and more, all meeting ASTM A182 and A479 standards.

These fasteners, graded as F51, adhere to dimensions outlined in standards like DIN 931, 912, and 975, among others, with configurations compliant with ASME B1.1 2A/3a. Duplex Stainless Steel Washers are designed to withstand high pressure, temperature, and wear, boasting excellent corrosion resistance properties. Our products can be cold forged, hot forged, or machined from bar stock, offering versatility in application.

Duplex Stainless Steel Bolts are available in sizes ranging from M6 to M100, with lengths spanning from 10mm to 1000mm. The material exhibits a melting point of 1350 ℃. It comprises carbon, manganese, silicon, phosphorus, sulfur, chromium, molybdenum, nickel, nitrogen, and iron. These bolts feature a minimum tensile strength of 800MPa and a minimum yield strength of 550MPa.

We offer various fasteners, including the Duplex 2205 Threaded Rod, facilitating connections between components without requiring two nuts. For further information on our products, such as Alloy 2205 Screws, and pricing details, please don’t hesitate to contact us. Ratna Exports is your trusted partner for high-quality duplex steel fasteners.

Duplex Stainless Steel Bolts, Duplex Fasteners Manufacturers, Duplex 2205 Fasteners, Duplex 2205 Nuts, Duplex Steel UNS S32205 Threaded Rod, Duplex 2205 Round Head Bolts Manufacturer, 2205 Duplex Stainless Fasteners Price in India

At Ratna Exports, we provide an extensive array of Duplex Steel 2205 Fasteners, including Bolts, Nuts, Washers, Screws, Threaded Rods, and more. Our range caters to diverse needs, with options available in various sizes, shapes, specifications, and thicknesses tailored to our clients’ requirements. These Duplex Steel Fasteners find widespread application across industries such as Oil and Gas, Construction, Offshore, and Onshore.

Our Duplex Steel Fasteners are meticulously crafted to meet the highest quality standards, ensuring reliability and durability in demanding environments. Whether you need bolts for structural support, nuts for secure fastening, washers for distributing load, screws for precise fastening, or threaded rods for versatile connections, we have you covered.

With Ratna Exports, you can trust our commitment to delivering top-notch Duplex Steel Fasteners that meet your specific needs and exceed your expectations. Contact us today to discuss your requirements and explore our comprehensive range of products.

Duplex Fasteners Specification

 

Duplex Fasteners Material Specification 2205 Duplex Bolts, UNS S31803 Bolts
Standard DIN, UNI, ISO, JIS, GB, IS, BS, ASME, ANSI, ASTM, and all International Standards
Duplex Fasteners/ Bolts Size M2, M2.5, M3, M4, M5, M6, M8, M10, M12, M14, M16, M20, M24, M30, M36 to M160
Length 3 mm to 200 mm
Duplex Bolts, Studs Threads: METRIC, BSW, BSF, UNC, UNF, or as required
Duplex Steel Fasteners Standard:

ANSI – American National Standards Institute

 

  • ANSI B 18.2.4 2M
  • ANSI B 18.2.4 1M
  • Duplex Steel, Stud Bolt length, is defined in ASME B16.5 standard
  • Duplex Steel Hex nuts defined in ASME B18.2.2
  • ASME B18.5

DIN: DIN 931, DIN 933, DIN 934, DIN 970

UTS – Unified Thread Standard: UNC, UNF, UNEF, UNS,

ISO – International Organization for Standardization: ISO 4032, ISO 4033, JIS standards
SCOPE OF MANUFACTURE
  • Hot Forged Duplex Fasteners, Nut / Bolt; up to M36 / 1-1/2” Dia, up to 1100mm long
  • CNC Machined Duplex Fasteners, Nut / Bolt; up to M100 / 4” Dia, up to 1500mm long
Duplex Fasteners in the form of: Hex, Square, Round, Threading as per Gauge Etc.
Head drive: Phillips, Slotted, Phillips/Slot, Six-Lobe, etc
Duplex bolting Test Certificate: Manufacturer Test Certificate as per EN 10204 / 3.1
Duplex Fasteners finishing:

Zinc (yellow, white, blue, black), black oxide,

Geometry, Dacroment, anodizing, nickel-plated, plated zinc-nickel, Duplex Steel: Passivated

Self-Colour, Hot Dip Galvanised (HDG), Bright Zinc Plated (BZP), Sherardized, Duplex Steel, Mechanically Applied coating, and some special ones like DACROMET
Production process M2-M24: Cold Forging, hot forging M24-M100, machining, and CNC for Customised connecting element
Duplex bolting materials Surface Coating:
  • Teflon Coated Fasteners
  • Phosphate Coated Fasteners
  • Zinc Coated Fasteners
  • PTFE Coated Duplex Steel Fasteners
  • Xylan Coated Fasteners
  • Cadmium Coated Fasteners
  • Hot Dipped Galvanizing Coated Fasteners

All surface finishes offered, including Geomet & PTFE, Galvanised, Zinc, Electroless Nickel, Sherardized, Dacromet
Popular Types of Duplex Steel Bolts Hex Bolts, Flange Bolts, Hex Head Bolts, Lag Bolts, Square Bolts, Eye Bolts, U Bolts, T Bolts, Countersunk Bolts, etc.
Popular Types of Duplex Steel Nuts Eye, Dome, Hex Head Nut, Panel, Lock, Coupling, Square, Acorn, T, Wing, etc.
Popular Types of Duplex Steel Screw Socket Set Fasteners, Anchor Fasteners, Blind Rivet, Threaded Fasteners, Socket Head Fasteners, Machine Fasteners, Concrete Fasteners, Shoulder Fasteners, Panel Fasteners, Hex Head Cap Fasteners, etc.
Popular Types of Duplex Steel Washers Machine Washers, Star Washers, Flat Washers, Lock Washers, Split Washers, Sealing Washers, etc.
Duplex Fasteners Packing: IN BULK: canton, pallet, Small Boxes/carton/pallet, or customer request

 

Duplex Fasteners Chemical Composition

 

Grade

C

Mn

Si

P

S

Cr

Mo

Ni

N

Fe

Duplex S31803

0.030 max

2.00 max

1.00 max

0.030 max

0.020 max

21.0 – 23.0

2.5 – 3.5

4.50 – 6.50

0.18 – 0.20

63.72 min

Duplex S32205

0.030 max

2.00 max

1.00 max

0.030 max

0.020 max

22.0 – 23.0

3.00 – 3.50

4.50 – 6.50

0.14 – 0.20

63.54 min

Duplex S32750

0.030 max

1.20 max

0.80 max

0.035 max

0.020 max

24.00 – 26.00

3.00 – 5.00

6.00 – 8.00

0.24 – 0.32

58.095 min

Duplex S32760

0.03 max

1.00 max

1.00 max

0.030 max

0.010 max

24.00 – 26.00

3.00 – 4.00

6.00 – 8.00

0.20 – 0.30

57.61 min

Duplex Fastener Mechanical Properties

 

Element

TENSILE STRENGTH  ( MPA) Min.

0.2 Per Yield    Strength (MPA) Min.

Elongation (%) Min.

Hardness            ( BHN) Max.

S31803 / S32205

620

448

25

290

S32750 / S32760

800

550

15

310

Equivalent Grades for Duplex Fasteners

STANDARD

UNS

WNR.

Duplex 2205

S31803 / S32205

1.4462

 

Dimensions Chart for Duplex Fasteners

 

Bolt Size

USS

SAE

OD (in.)

ID (in.)

Thickness

OD (in.)

ID (in.)

Thickness

1/8 (#6)

–

–

–

0.375

0.156

.036/.065

5/32 (#8)

–

–

–

0.438

0.188

.036/.065

3/16 (#10)

0.560

0.250

.036/.065

0.500

0.220

.036/.065

7/32 (#12)

–

–

–

0.562

0.250

.051/.080

1/4 (#14)

0.734

0.312

.051/.080

0.625

0.281

.051/.080

5/16

0.875

0.375

.064/.104

0.688

0.344

.051/.080

3/8

1.000

0.438

.064/.104

0.812

0.406

.051/.080

7/16

1.250

0.500

.064/.104

0.922

0.469

.051/.080

1/2

1.375

0.562

.086/.132

1.062

0.531

.074/.121

9/16

1.469

0.625

.086/.132

1.156

0.594

.074/.121

5/8

1.750

0.688

.108/.160

1.312

0.656

.074/.121

3/4

2.000

0.812

.122/.177

1.469

0.812

.108/.160

7/8

2.250

0.938

.136/.192

1.750

0.938

.108/.160

1

2.500

1.062

.136/.192

2.000

1.062

.108/.160

1 1/8

2.750

1.250

.136/.192

2.250

1.250

.108/.160

1 1/4

3.000

1.375

.136/.192

2.500

1.375

.136/.192

1 3/8

3.250

1.500

.153/.213

2.750

1.500

.136/.213

1 1/2

3.500

1.625

.153/.213

3.000

1.625

.153/.213

1 5/8

3.750

1.750

.153/.213

–

–

–

1 3/4

4.000

1.875

.153/.213

–

–

–

1 7/8

4.250

2.000

.153/.213

–

–

–

2

4.500

2.125

.153/.213

–

–

–

2 1/4

4.750

2.375

.320/.248

–

–

–

2 1/2

5.000

2.625

.210/.280

–

–

–

2 3/4

5.250

2.875

.228/.410S

–

–

–

3

5.500

3.125

.249/.327

–

–

–

Size Chart for Duplex Fasteners

 

Fasteners Type SIZE GRADE ASME ISO ASTM
Socket Head Cap Fasteners M1.6 to M64 12.9 B18.3.1 M 4762 A574M
Socket Low Head Cap Fasteners M4 to M20 10.9      
Socket Head Shoulder Fasteners M6 to M24 12.9 B18.3.3M    
Countersunk Socket Head Fasteners M3 to M20 12.9 B18.3.5M 10642 F835M
Button Head Socket Fasteners M3 to M12 12.9 B18.3.4M 7380 F835M
Flange Button Head Socket Fasteners M3 to M10 12.9     F835M
Knurled Point Socket Set Fasteners M3 to M20 45H B18.3.6M 4029 F912M
Flat Point Socket Set Fasteners M6 to M12 45H B18.3.6M 4026 F912M
Point Socket Set Fasteners M3 to M20 45H B18.3.6M 4028 F912M
Cone Point Socket Set Fasteners M3 to M12 45H B18.3.6M 4027 F912M
Plain Point Socket Set Fasteners M3 to M20 45H B18.3.6M 4029 F912M
Taper Pressure Plug M8 to M22 –      

 

Duplex Fasteners Type SIZE PROPERTY CLASS TENSILE STRENGTH STANDARD
Duplex Hex Head Fasteners M4 to M80 10.9 1040N / mm2 min

ISO 4017 (Full Thread)

ISO 4014 (Half Thread)

 

Duplex Nuts Type SIZE PROPERTY CLASS STANDARD
Duplex Hex Nut M6 to M42 10 ISO 4032
Duplex Nylock Nut

M6 to M20 (Gr.8)

M10 to M24 (Gr.10)

 8 & `10 DIN 982
Duplex Nylock Nut

M6 to M20 (Gr.8)

M10 to M24 (Gr.10)

 8 & 10 DIN 985
Duplex Hex Weld Nut M6 to M12 8 DIN 929

 

Duplex Washers Type SIZE HARDNESS STANDARD
Square Section Spring Washer, Duplex 3mm to 39mm HV (430 to 530) DIN 7980
Flat Section Spring Washer, Duplex 3mm to 39mm HV (430 to 530) DIN 127 B
Hardened Washer, Duplex 12mm to 30mm HV (300 to 370) IS 2016
Hardened Steel Washer, Duplex 12mm to 56mm

Rockwell 26 to 45 (HDG)

Rockwell 38 to 45 (Coated)

 ASTM F436M

Application of Duplex Fasteners

  •   Duplex Steel Threaded Rod used in Sea Water Equipment
  •  ASME SA479 Alloy F60 Bolts And Nuts used in Pharmaceuticals
  •  EN 1.4462 Duplex Steel Nuts used in Specialty Chemicals
  •  Duplex Bolts used in Spiral Welded tubes for burner pipes and flues
  •  ASME SA479 2205 Stud Bolts used in Petrochemicals
  •  Duplex Bolts used in Off-Shore Oil Drilling Companies
  •  Duplex Steel F60 Screws used in Gas Processing
  •  DIN 1.4462 Duplex Steel Fasteners used in Aircraft Exhaust Manifolds
  •  Duplex Steel 2205 Fasteners used in Pharmaceutical Equipment
  •  Alloy F60 Flat Washer used in Power Generation
  •  EN 1.4462 Duplex Steel Square Bolts used in Heat Exchangers

 

Other Products

Hot Selling Product

Countries We Export:

Afghanistan, Albania, Algeria, Andorra, Angola, Antigua-Barbuda Argentina, Armenia, Australia, Austria, Azerbaijan, Bahamas, Bahrain, Bangladesh, Barbados, Belarus, Belgium, Belize, Benin, Bhutan, Bolivia, Bosnia-Herzegovina, Botswana, Brazil, Brunei, Bulgaria, Burkina-Faso, Burundi, Côte d’Ivoire, Cabo Verde, Cambodia, Cameroon, Canada, Central African Republic, Chad, Chile, China, Colombia, Comoros, Congo (Congo-Brazzaville), Costa-Rica, Croatia, Cuba, Cyprus, Czechia (Czech Republic), Democratic Republic of the Congo, Denmark, Djibouti, Dominica, Dominican Republic, Ecuador, Egypt, El Salvador, Equatorial Guinea, Eritrea, Estonia, Eswatini (fmr. “Swaziland”), Ethiopia, Fiji, Finland, France, Gabon, Gambia, Georgia, Germany, Ghana, Greece, Grenada, Guatemala, Guinea, Guinea-Bissau, Guyana, Haiti, Holy See, Honduras, Hungary, Iceland, India, Indonesia, Iran, Iraq, Ireland, Israel, Italy, Jamaica, Japan, Jordan, Kazakhstan, Kenya, Kiribati, Kuwait, Kyrgyzstan, Laos, Latvia, Lebanon, Lesotho, Liberia, Libya, Liechtenstein, Lithuania, Luxembourg, Madagascar, Malawi, Malaysia, Maldives, Mali, Malta, Marshall Islands, Mauritania, Mauritius, Mexico, Micronesia, Moldova, Monaco, Mongolia, Montenegro, Morocco, Mozambique, Myanmar (formerly Burma), Namibia, Nauru, Nepal, Netherlands, New Zealand, Nicaragua, North Korea, North Macedonia, Norway, Oman, Pakistan, Palau, Palestine-State, Panama, Papua, New Guinea, Paraguay, Peru, Philippines, Poland, Portugal, Qatar, Romania, Russia, Rwanda, Saint Kitts and Nevis, Saint Lucia, Saint Vincent and the Grenadines, Samoa, San Marino, Sao Tome and Principe, Saudi Arabia, Senegal, Serbia, Seychelles, Sierra Leone, Singapore, Slovakia, Slovenia, Solomon Islands, Somalia, South Africa, South Korea, South Sudan, Spain, Sri Lanka, Sudan, Suriname, Sweden, Switzerland, Syria, Tajikistan, Tanzania, Thailand, Timor-Leste, Togo, Tonga, Trinidad and Tobago, Tunisia, Turkey, Turkmenistan, Tuvalu, Uganda, Ukraine, United Arab Emirates, United Kingdom, United States of America, Uruguay, Uzbekistan, Vanuatu, Venezuela, Vietnam, Yemen, Zambia, Zimbabwe.

Cities We Supply:

London, New-York, Paris, Moscow, Tokyo, Dubai, Singapore, Barcelona, Los-Angeles, Madrid Rome, Chicago, Toronto, San-Francisco, Abu-Dhabi, St-Petersburg, Amsterdam, Berlin Prague, Washington,Istanbul, Las-Vegas, Doha, Seoul, Sydney, Beijing,  Miami, Munich, Milan, San-Diego, Bangkok, Vienna, Dublin, Vancouver, Boston,  Zurich,  Melbourne, Budapest, Houston, Seattle, Montreal, Hong-Kong, Frankfurt, Sao-Paulo, Tel-Aviv, Copenhagen, Calgary, Orlando, Atlanta, Dallas, Hamburg, Osaka, Lisbon, Austin, Phoenix Naples, Oslo, Denver, Stockholm, Riyadh, Delhi, Buenos Aires, San-Jose, Brussels, Portland Philadelphia, Ottawa, Helsinki, Valencia, Brisbane, Warsaw, Minneapolis, Shanghai, Lyon, Adelaide, Edmonton, Marseille, Muscat, Athens, Stuttgart, Rio-De-Janeii, Baltimore, Auckland, Cologne, New-Orlean, Kuwait-City,  Kiev, Hanover, Perth, Minsk, Bucharest, Nashville, Dusseldorf, Manchester, Sacramento, Glasgow, Mexico-City, Salt-Lake-Ci, Raleigh, Cracow