Duplex Steel Fasteners Manufacturers in Mumbai, Duplex Steel Nut Bolt Suppliers Exporters India

Durable Duplex Steel Fasteners in Mumbai

Discover Exceptional Duplex Steel Fasteners for Reliable Solutions

At Randhir Metal And Alloys Pvt. Ltd., we specialize in providing top-quality Duplex Steel Fasteners. Crafted from premium-grade duplex steel, our Duplex Steel Fasteners in Mumbai offer exceptional performance in various applications. Our commitment to excellence is reflected in the superior craftsmanship and durability of our products.

Corrosion Resistance: Duplex steel fasteners are highly resistant to corrosion, making them ideal for use in harsh environments such as marine, chemical, and offshore industries.
High Strength: With a unique duplex microstructure, these fasteners exhibit excellent strength and toughness, ensuring reliable performance even under extreme loads.
Versatility: From bolts and nuts to screws and washers, our duplex steel fasteners come in a wide range of configurations to suit diverse application requirements.

Applications Across Industries

Buy from Duplex Steel Fasteners Manufacturers in Mumbai

Our fasteners play a crucial role in securing critical components and structures, providing unmatched reliability and durability. As leading Duplex Steel Fasteners Manufacturers in Mumbai, we cater to a broad spectrum of industries, including construction, oil and gas, and renewable energy.

Construction: In construction projects, duplex steel fasteners are used to assemble structural elements, ensuring stability and integrity.
Oil and Gas: With their corrosion resistance and high strength, these fasteners are essential for offshore platforms, pipelines, and equipment in the oil and gas industry.
Renewable Energy: From wind turbines to solar panel installations, duplex steel fasteners offer a reliable solution for securing components in renewable energy projects.

Specifications for Precision and Quality Assurance

Looking for Duplex Steel Nut Bolt Suppliers in India?

Our duplex steel fasteners are manufactured to meet stringent specifications, adhering to industry standards for quality and performance. As Duplex Steel Nut Bolt Suppliers in India, we offer a comprehensive range of sizes and configurations to meet the diverse needs of our customers.

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 28.2.4 1M Duplex Steel Stud Bolt length is defined in ASME B16.5 standard Duplex Steel Hex nuts are 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, NPT, NPTF ISO – International Organization for Standardization: ISO 4032, ISO 4033, JIS standards
Source of raw materials	Tata Steel, JSPL, RINL, Usha Martin, Dhamma Steel, Mukund Steel, etc.
SCOPE OF MANUFACTURE	Hot Forged Duplex Fasteners, Nut / Bolt; up to M36 / 1-1/2” Dia, up to 1100mm lg CNC Machined Duplex Fasteners, Nut / Bolt; up to M100 / 4” Dia, up to 1500mm lg
Duplex Fasteners In 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 one like DACROMET
Production process	M2-M24: Cold Forging, hot forging M24-M100, machining, and CNC for Customized connecting element
Duplex bolting materials Surface Coating:	Teflon Coated Fasteners Phosphate Coated Fasteners Zinc Coated Fasteners PTFE Coated Duplex Steel Fasteners Xylon 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 Nut	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 Washer	Machine Washers, Star Washers, Flat Washer, Lock Washer, Split Washer, Sealing Washer, etc.
Duplex Fasteners Packing:	IN BULK: canton, pallet, Small Boxs / 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	22.0 – 23.0	3.0 – 3.5	4.50 – 6.50	0.14 – 0.20	63.72 min
Duplex S32205	0.030 max	2.00 max	1.00 max	0.030 max	0.020 max	21.0 – 23.0	2.50 – 3.50	4.50 – 6.50	0.8 – 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	0.05 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	Density (g/cm 3)	Density (lb/in 3)	Melting Point (°C)	Melting Point (°F)
S31803 / S32205	7.805	0.285	1420 – 1465	2588 – 2669
S32750 / S32760	7.8	0.281	1350	2460

Equivalent Grades for Duplex Fasteners

STANDARD	UNS	WNR.
Duplex 2205	S31803 / S32205	1.4462

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	012.9	B18.3.3M
Countersunk Socket Head Fasteners	M3 to M20	012.9	B18.3.5M	10642	F835M
Button Head Socket Fasteners	M3 to M12	012.9	B18.3.4M	7380	F835M
Flange Button Head Socket Fasteners	M3 to M10	012.9	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
Dog 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

Dimensions Chart for Duplex Fasteners

Bolt Size	USS			SAE
Bolt Size	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	–	–	–

Benefits of Choosing Duplex Steel Nut Bolt

Most Trusted Duplex Steel Nut Bolt Exporters in India

Opting for duplex steel fasteners from us offers numerous advantages, ensuring peace of mind for our customers. We are one of the finest Duplex Steel Nut Bolt Exporters in India. From durability to cost-effectiveness, these fasteners deliver exceptional value and performance.

Durability: Resistant to corrosion, erosion, and stress corrosion cracking, duplex steel fasteners offer long-term reliability in demanding environments.
Cost-Effectiveness: While initially priced higher than conventional materials, the longevity and low maintenance requirements of duplex steel fasteners make them a cost-effective choice in the long run.
Ease of Maintenance: With minimal maintenance requirements, duplex steel fasteners offer convenience and peace of mind for operators and maintenance teams.

Products Related to Duplex Steel Fasteners

Randhir Stainless Steel M30 Super Duplex Nut BSW Thread Plain Surface Finish Super Duplex Grade 1000 Pieces Pack

Brand	Randhir
Material	Stainless Steel
Diameter	30 MM
Size	M30
Type	Super Duplex
Surface Finish	Plain
Fastener Type	Nut
Quantity Per Pack	1000
Material Grade	Super Duplex
Thread Type	BSW
Minimum Order Quantity	1000 Pieces

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Randhir Duplex 2205 31803 Stainless Steel Fasteners 8 MM Mill Finish Silver Color New Only Manufacturers, Suppliers in Mumbai

Randhir Duplex 2205 31803 Stainless Steel Fasteners 8 MM Mill Finish Silver Color New Only

Brand	Randhir
Diameter	8 MM
Material	Stainless Steel
Size	Duplex 2205 / 31803 Fasteners
Type	Duplex 2205 / 31803 Fasteners
Finishing	Mill Finish
Packaging Type	As Per Standard
Material Grade	Duplex 2205 / 31803 Fasteners
Color	Silver
I Deal In	New Only
Steel Grade	Duplex 2205 / 31803 Fasteners
Minimum Order Quantity	100 Pieces

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