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We are deemed as remarkable metal alloy fasteners suppliers and exporters from India. We Produce fasteners at the most economical price with world class quality norms too with our strict parameters of quality process.
Duplex Steel Fasteners are kind of Stainless steel fasteners with best maximum possible hardness in stainless steel. We got good name in the market for the variety of duplex stainless steel fasteners as well as design. These fasteners are made according to the industrial norms and well cleared with quality levels. As the components designed and well checked by experienced engineers and maintained accurate, sturdiness, anti-corrosion etc. so can be used without any problems.
Duplex Steel Fasteners:
Duplex stainless steels Fasteners have a mixed microstructure of austenitic and ferritic in ratio of 50/50 or 40/60 ( Commercial).
Applications:
Duplex Steel Fasteners are widely used in Oil and Gas industries, Construction Industries, Offshore Industries, On Shore Industries etc. The demand for Duplex Steel fasteners are increasing day by day because of its characteristics.
Why Duplex Steel Fasteners Used?
Duplex stainless steels Fasteners have roughly twice the strength compared to austenitic stainless steels Fasteners and also improved resistance to localized corrosion, particularly pitting, crevice corrosion and stress corrosion cracking. Duplex Steel contains high chromium (19–28%) and molybdenum (up to 5%) and lower nickel contents than austenitic stainless steels.
Duplex grades are characterized into groups based on their alloy content and corrosion resistance. Lean duplex refers to grades such as UNS S32101 (LDX 2101), S32304, and S32003. The standard duplex is 22% chromium with S31803/S32205 known as 2205 being the most widely used. Super duplex refers to 25% chromium grades such as S32760 (Zeron 100), S32750 (2507), and S32550 (Ferralium). Hyper duplex refers to higher chromium grades such as S32906. The properties of duplex stainless steels are achieved with an overall lower alloy content than similar-performing super-austenitic grades, making their use cost-effective for many applications.
Duplex Steel |
Hex Bolts, Heavy Hex Bolts, Machine Bolts, Hex Screws, Socket Head Bolts, Allen Bolts, Square Bolts, Stud Bolts, Hex Nuts, Square Nuts, Lag Bolts, Eye Bolts, T Bolts, Grub Screws, Special Screws, Special Bolts, Hex Nuts, Heavy Hex Nuts, Washers, plain Washers
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Manufacturing Process of Duplex Stainless Steel Fasteners
There is a huge varity of fasteners in duplex steel and it depends on type of fasteners you need to manufacture to adopt the manufacturing it. For example stud bolts is a kind of fasteners and for manufacturing it we need plai bar. There are two process to manufacture duplex steel stud bolts one is of thread rolling process and second is chezer threading. Second process is out dated and rarely sued while the first process is universally accepted and quality process.
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Duplex Steel Fasteners
Dimensional Standards For Duplex Steel Fasteners
DIN Standard Duplex Steel Fasteners
ANSI Standard Duplex Steel Fasteners
BS Standard duplex steel Fasteners
ISI Standard Duplex Steel Fasteners
ISO Standard Duplex Steel Fasteners
Type of Fasteners
· Bolts (Eyebolt)
· Stud
· Nuts (Nylock, Lock)
· Washer (Star, Plain)
· Allen Caps
· Screws (CSK, Pen Head, Philip, Mushroom, Cheese)
· Clamp (U, J, L)
· Grab
· Rivet (Pop & Hollo) Etc.
In Form of
· Hex
· Square
· Round
· Threading as per Gauge Etc.
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Material |
Size |
Length |
Specification |
Duplex Steel
Cupro Nickel
Hastelloy
Nickel
Monel
Inconel
Alloy 20 Etc. |
M02 to M30 |
3 mm To 200 mm |
IS
BS
ASTM |
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Super Duplex Steel Fasteners |
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BOLTS
HEX HEAD BOLTS , HEXAGON HEAD SCREW , MUSHROOM HEAD SQURE NECK BOLTS , T- HEAD BOLTS , WING SCREW , EYE BOLT , LIFTING EYE BOLT
SCREW
PAN HEAD SLOTTED SCREWS , CHEESE HEAD SLOTTED SCREWS , COUNTERSUNK HEAD SLOTTED SCREWS , COUNTERSUNK RAISED HEAD SLOTTED SCREWS , PAN PHILLIPSE HEAD SCREW , COUNTERSUNK PHILLIPSE RAISED HEAD SCREWS , SLOTTED CHEESE TRIM HEAD MACHINE SCREWS , SOCKET HEAD ALLEN CAP SCREWS , ALLEN COUNTERSUNK SOCKET HEAD CAP SCREWS , SOCKET HEAD SHOULDER SCREWS , SOCKET HEAD CAP SCREW LOW HEAD , HEXAGON SOCKET SET SCREW WITH FLAT POINT , HEXAGON SOCKET SET SCEWS WITH CONE POINT , HEXAGON SOCKET SET SCREW WITH DOG POINT , HEXAGON SOCKET SET SCREWS WITH DOG POINT , HEXAGON SOCKET SET SCREWS WITH CUP POINT , IMPRIAL SOCKET CAP SCREWS .
NUTS
HEXAGON NUTS , HEXAGON COUPLING NUTS , HEXAGON THIN NUT , SQUARE NUT , HEXAGON CASTLE NUTS , SELF LOCKING NUT , HEXAGON DOMED CAP NUTS.
WASHER
PLAIN WASHER , PLAIN BIG OD WASHER , PLAIN SMALL OD WASHER , SPRING LOCK WASHER , SPRING WASHER HEAVY DUTY , TOOTH WASHER , SERRATED STAR WASHR , TAB WASHER WITH ONE TAB . , TAB WASHER WITH TWO TAB. |
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Stainless Steel |
ASTM / ASME A 193 B 8( 304 )
B 8C( SS 347 )
B 8M( SS 316 )
B 8 T( SS 321 ), A 2 , A 4 // ASTM / ASME A 194 B 8 ( 304 ) , B 8C ( SS 347 ) ,B 8M ( SS 316 ) ,B 8T ( SS 321 ). |
Grades : ASTM A 182 F 304, 304L, 304H, 309, 309H, 310H, 316, 316L, 316Ti, 316H, 316LN, 317H, 317LN, 321, 410, 304L, 304H, 309S, 309H, 310S, 310H, 316, 316TI, 316H, 316LN, 317, 317L, 321, 321H, 347, 347H, 904L.3 304L, 304H, 309S, 309H, 310S, 310H, 316, 316TI, 316H, 316LN, 317, 317L, 321, 321H, 347, 347H, 904L.04L, 304H, 309S, 309H, 310S, 310H, 316, 316TI, 316H, 316LN, 317, 317L, 321, 321H, 347, 347H, 904L |
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