Duplex 2205 DIN 934 Hex Nut Bolt S31803 S32750 Hot Dip Galvanizing ISO9001

Brand Name:HT

Certification:ISO9001

Model Number:Duplex Stainless Steel Fasteners DIN 934 HEX NUT S31803 S32750 Bolt Nut Washer

Minimum Order Quantity:1 pcs

Delivery Time:30-35 working days

Payment Terms:L/C,T/T, Western Union,

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Zhengzhou Huitong Pipeline Equipment Co.,Ltd.

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Location: Zhengzhou Henan China

Address: Room 1703, 17th Floor, Building 5, Jinyin Modern City, Guangdian South Road, Jinshui District, Zhengzhou City, Henan Province, China.

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Product Details

Duplex Stainless Steel Fasteners DIN 934 HEX NUT S31803 S32750 Bolt Nut Washer

1.Duplex 2205 Nuts

Duplex stainless steel nuts provide a higher strength of yield than typical austenitic stainless steel nuts. These complex SAF 2205 nuts also provide increased corrosion resistance and durability. Super duplex stainless steel 2205 nuts provide protection against crevice corrosion, pitting and numerous different types of corrosive cracking and wear. Furthermore, due to their solid heat resistance, duplex stainless steel nuts can be utilized in temperatures up to 570° F.

Alloy 2205 gets the name Duplex because it is composed of two different types of grains. 40-50% of its grain structure is austenite and 50-60% of it is ferrite. It is closely related to, but much more popular than Alloy 255. In most environments, it surpasses 317L in crevice corrosion resistance. Alloy 2205 excels in chloride environments and resists hydrogen sulfide. Alloy 2205 has almost twice the strength of 316L. Due to the lower nickel and molybdenum content, it is less costly than Alloy C276. Among the places where Alloy 2205 is used include pressure vessels, heat exchangers and scrubbing systems.

2.Duplex 2205 Nuts Specification :

Material	Size	Length	Specification
Duplex Stainless Steel	M02 to M30	3 mm to 200 mm	IS BS ASTM

Material:	Duplex Stainless Steel, Super Duplex Stainless Steel.
Standard :	ASTM / ASME F60 / F51/ F61 / F55 / F53
Grade:	UNS S31803, S32205, S32550, S32750, S32760
Type of Fasteners:	Bolts : Bolts stud bolts, hex head bolts, socket hexagon head screw anchor bolts, u-bolts, J bolts, mushroom head square neck bolts, t- head bolts, wing screw, eye bolt, eye bolt, foundation bolts and structural bolts Washer : Plain washer , plain big & small OD washer , spring lock washer , spring washer heavy duty , tooth washer , star washer , tab washer with one & two tab Nuts : Hexagon nuts, hexagon coupling nuts, hexagon thin nut, square nut, hexagon castle nuts, self locking nut, hexagon domed cap nuts 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 screws 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. Other : Threaded rod, as per drawing and customers spec. coating, hot dipped galvanizing, phosphate, Teflon, xylon, zinc, cadmium.
In Form of:	Hex, Square, Round , Threading as per Gauge Etc.

Duplex 2205 Nuts Composition :

Chemical Composition
Typical compositional ranges for grade Duplex 2205 Nuts

	C	Mn	Si	P	S	Cr	Mo	Ni	N
2205 (S31803)	0.03 max	2.0 max	1.0 max	0.03 max	0.02 max	min: 21.0 max: 23.0	min: 2.5 max: 3.5	min: 4.5 max: 6.5	min: 0.08 max: 0.20
2205 (S32205)	0.03 max	2.0 max	1.0 max	0.03 max	0.02 max	min: 22.0 max: 23.0	min: 3.0 max: 3.5	min: 4.5 max: 6.5	min: 0.14 max: 0.20

Mechanical Properties
Typical mechanical properties for grade Duplex 2205 Nuts

Grade	Tensile Strength (MPa) min	Yield Strength 0.2% Proof (MPa) min	Elongation (% in 50mm)	Hardness Rockwell C (HR C)
UNS-S 31803	650-880	448	25
UNS-S 32205	621	448	25	21 max

Physical Properties
Typical physical properties for annealed grade Duplex 2205 Nuts

Density lbm/in3	Electrical Resistivity mW•in	Thermal Conductivity (BTU/hr•ft•°F)	Heat Capacity BTU/lbm•°F	Electrical Resistivity (in x 10-6)
at 68°F	0.278	27.6	8.7	0.112	33.5
at 212°F		26.1	9.2	0.119	35.4
at 392°F		25.4	9.8	0.127	37.4
at 572°F		24.9	10.4	0.134	39.4

Duplex 2205 Nuts Surface Coatings :

Hot Dipped Galvanizing
Epoxy Coating
Electro Polished
Passivation
Zinc Plating
Chrome Plating
Mirror Buffed
Teflon Coating
Oxidized

Company Profile

Huitong Group was established in 1978. After 38 years'development and innovation,by now,Huitong Group has set up multiple subsidiary companies.Among them,Zhengzhou Huitong Pipe Fitting Co.,Ltd.,with the indepent right of import and export, is mainly engaged in exporting steel pipe and pipe fittings for Huitong Group and assisting another subsidiary company of Huitong Group:Zhengzhou Huitong Machanical Equipment Co.,Ltd., in exporting machanical equipment.

Zhengzhou Huitong Pipeline Equipment Co.,Ltd.,with the strong support of Huitong Group,and years'development and innovation, are more and more professional in technical service and can manufacure products with all kinds of material,shape and size. Especially in elbows, tee, reducer, flange and pipe cap etc., we have gained more than 20 product patent, and hundreds of technology patent. Also,we have gradually taken an ireplacable role in High-pressure,high-temperature and anti-corrosion area. With the continuous construction of engery in China,such as petrol gas,electric power,etc.,our company has become the purchasing center of whole set fittings for such projects.In 2009,a foreign trade team established,is manily engaged in oil gas and electric power projects abroad.By now, our products have been exported to

Canada,Malaysia,Parkistan,UAE, Eygpt,the Middle East countries, etc.. We have passed the qualification of ISO9001:2000 and API quality certification system. High-quality products and high-class service are well received by abroad customers in this industry. The unique diversified production line can offer you one-package serive, you can pruchase all complex products from us at one time. What's more, our sufficient material stock and conventional product stock can ensure you receive satisfied product in the shortest time.

With powerful financial strength,advanced managerial concept, excellent marketing service,strict quality control system and integrated marketing team,we would like to develop together with you hand in hand. Adhering to the operation principle of "faith first and clients foremost", we always supply high quality products, complete after-sales service and favorable prices. We sincerely hope to establish long-term cooperation with you on the basis of mutual benefits, reciprocity and common development.