Yaang Pipe Industry: duplex stainless steel pipe

Showing posts with label duplex stainless steel pipe. Show all posts

Wednesday, October 5, 2016

The choice of materials and use of stainless steel pipe

Many variable factors are expressed in terms of corrosive medium characteristics, namely, chemical products and its concentration and atmosphere, temperature, time, so if the media do not understand the nature right to the use of materials, material selection is difficult. However, the following can be used as a guide for selection:

Application direction of duplex stainless steel pipe by yaang.com

One: chemical and petrochemical processing industry in this area involves a wide range, the conditions of complex, diverse media, but also the use of duplex stainless steel earlier and more areas.

Advantages and disadvantages of duplex stainless steel pipe and other stainless steel pipe

So-called duplex stainless steel pipe is a solid solution of tissue iron element in the bulk phase and austenite meet each half, generally at least phase content also need to reach 30% so it both iron element of stainless steel pipe and austenitic stainless steel pipe performance characteristics.
Compared with austenitic stainless steel pipe, the advantages of duplex stainless steel pipe are as follows:

The type of stainless steel pipe By yaang.com

Stainless steel pipe, according to its structure is divided into austenite size stainless steel pipes, iron element markov shape stainless steel pipe, duplex stainless steel pipe, stainless steel pipe and precipitation hardening stainless steel pipe.

Duplex Stainless Steel Pipe Price_Zhejiang Yaang Pipe Industry Co., Limited

Duplex Stainless Steel Pipe Price

FOB PriceUSD 8,00- 30,000/Piece
PortNingbo or Shanghai Port
MOQ1 Piece/Ton
Supply Ability1000 Tons Per Month
Payment TermsL/C,T/T,Western Union,MoneyGram
PackagingSeaworthy plywood cases or pallets
Delivery7- 20 days

Quick Details

Standard:	ASTM,AISI,DIN,EN,GB,JIS	Place of Origin:	China (Mainland)	Brand Name:	Yaang
Model Number:	Duplex Stainless Steel Pipe	Type:	Seamless	Steel Grade:	300 Series
Application:	Construction,chemical, shipbuilding,window, door,balcony railing,etc.	Shape:	round, square, flat	Welding Line Type:	ERW
Thickness:	0.3-120mm	Outer Diameter:	0.6mm-1200mm	Thickness:	0.3mm-120mm
Applications:	fluid and gas transport; structural,machining	Standard:	ASTM, AISI,etc.	Material:	2205, UNS S32750, UNS S31500, UNS S32760, etc
Length:	as required	Surface:	2B,HL,BK,NO.1, NO.4,NO.8,etc.

UNS S31803 2205 Duplex Stainless Steel Pipe_Zhejiang Yaang Pipe Industry Co., Limited

UNS S31803 2205 Duplex Stainless Steel Pipe

FOB PriceUSD 8,00- 30,000/Piece
PortNingbo or Shanghai Port
MOQ1 Piece/Ton
Supply Ability1000 Tons Per Month
Payment TermsL/C,T/T,Western Union,MoneyGram
PackagingSeaworthy plywood cases or pallets
Delivery7- 20 days

Quick Details

Standard:	JIS,AISI,ASTM,DIN,EN	Place of Origin:	Zhejiang, China (Mainland)	Brand Name:	Yaang
Model Number:	Duplex Stainless Steel	Type:	Seamless	Steel Grade:	Duplex Stainless Steel
Application:	Heat exchanger and condenser	Surface:	as customer's required	Welding Line Type:	EFW
Thickness:	SCH5~SCH160	Outer Diameter:	1/8"-48"

UNS S31803 Duplex Stainless Steel Pipe_Zhejiang Yaang Pipe Industry Co., Limited

UNS S31803 Duplex Stainless Steel Pipe

FOB PriceUSD 8,00- 30,000/Piece
PortNingbo or Shanghai Port
MOQ1 Piece/Ton
Supply Ability1000 Tons Per Month
Payment TermsL/C,T/T,Western Union,MoneyGram
PackagingSeaworthy plywood cases or pallets
Delivery7- 20 days

Quick Details

Standard:	JIS,AISI,ASTM, GB,DIN,EN,SUS,SA	Place of Origin:	Zhejiang, China (Mainland)	Brand Name:	Yaang
Model Number:	Duplex Stainless Steel Pipe	Type:	seamless, welded, hot rolled, cold drawn	Steel Grade:	UNS S31803, 2205
Application:	petroleum industry, chemical,building, decorative,automobile,food	End type:	Round,square, rectangular, hexagonal, beveled end	Type:	ERW
Thickness:	Sch5S-SchXXS	Outer Diameter:	1/8"-120"	Finished:	polishing, bright, annealed, 2b,ba, brushed, hair line, mirror, sand blast
Treatment:	Hot rolled,cold drawn

S31803/S31500 Duplex Stainless Steel Pipe , Aneanled Steel Seamless Pipe_Zhejiang Yaang Pipe Industry Co., Limited

S31803/S31500 Duplex Stainless Steel Pipe , Aneanled Steel Seamless Pipe

FOB PriceUSD 800 - 30,000/Piece
PortNingbo or Shanghai
MOQ0.5 Tons
Supply Ability1000 Tons Per Month
Payment TermsL/C,T/T,Western Union
PackagingSeaworthy plywood cases or pallets
Delivery2 - 15 days

Quick Detail:

Name: S31803/S31500 Duplex Stainless Steel Pipe, Aneanled Steel Seamless Pipe

Place of Origin:Zhejiang, China (Mainland) Brand Name: Yaang

Shape: Duplex Stainless Steel Pipe Material: Duplex Stainless Steel

Steel Grade: S31803/S31500/S32750/S32760/S32205 ...

1.4462/2205 Duplex Stainless Steel Pipe Seamless Tube ASTM A789 ASTM A790_Zhejiang Yaang Pipe Industry Co., Limited

1.4462/2205 Duplex Stainless Steel Pipe Seamless Tube ASTM A789 ASTM A790

FOB PriceUSD 800 - 30,000/Piece
PortNingbo or Shanghai
MOQ0.5 Tons
Supply Ability1000 Tons Per Month
Payment TermsL/C,T/T,Western Union
PackagingSeaworthy plywood cases or pallets
Delivery2 - 15 days

Quick Detail:

Name: 1.4462/2205 Duplex Stainless Steel Pipe Seamless Tube ASTM A789 ASTM A790

Place of Origin:Zhejiang, China (Mainland) Brand Name: Yaang

Shape: Duplex Stainless Steel Pipe Material: Duplex Stainless Steel

Steel Grade: S31803/S31500/S32750 ...

Packaging & Delivery

Packaging Detail:	according to customer's require or export's standard
Delivery Detail:	2 - 15 days after confirmation

Specifications:

Characteristic:	High Mechanical Strength, Good Weldability, Good Corrosion Resistance, Low Thermal Expansion	Material Grade:	S31803/S31500/S32750 Etc
Outer Diameter:	6mm - 710mm	Surface Finish:	Pickled And Aneanled
Type:	Duplex Stainless Steel Pipe/Tube	Wall Thickness:	2.5mm - 50mm

Stainless Steel Pipe:

1.Material: S31803/S31500/S32750 ETC
2.O.D: 6mm - 710mm, Thickness: 2.5 - 50mm

3.A999/A999M: Each pipe shall be subjected to the nondestructive electric test or the hydrostatic test, the Thpe of test to be used shall be at the option of the mfg, unless otherwise specified in the PO.

4. The Pipe lengths : Unless otherwise agreed upon, all size from NPS 1/8” TO AND INCLUDING nps 8 are available in a length up to 24ft with the permitted range of 15 to 24 ft. Short length are acceptable and the number and min, length shall be agreed upon between mfg and purchaser.

5. The finished pipe shall be reasonably straight and shall have workmanlike finish, Removal of imperfections by grinding is permitted, provided the W.T are not decreased to the lenss than the permitted in Section 9 of Specification A999/A999M

6. Butt Weld End: According to ANSI B 16.25
7. Pipe Marking: Specified in A999/999M, include “ Logo+Standard+SIZE+Heat No.+Lot No.+H.T/E.T/U.T”

8. Packing: Each Pipe end is protected by Plastic cap. Then packed by Anti - rust steel strip, The outside of the bundle is plastic woven bag, or Plastic film.

9. Packing Mark: SIZE + STEEL GRADE+ QTY OF PIECE/WEIGHT/METRE.

High general, localized, and stress corrosion resistance properties in addition to high strength and excellent impact toughness.

Grade 2205 Duplex (UNS S32205/S31803)

Duplex 2205 is the most widely used duplex (ferritic/austenitic) stainless steel grade. It finds applications due to both excellent corrosion resistance and high strength.

The standard S31803 composition has over the years been refined by many steel suppliers, and the resulting restricted composition range was endorsed as UNS S32205 in 1996. S32205 gives better guaranteed corrosion resistance, but much of the S31803 currently produced also complies with S32205.

2205 is not generally suitable for use at temperatures above 300° C as it suffers from precipitation of brittle micro - constituents, nor below - 50° C because of its ductile - to - brittle - transition.

Chemical Composition, %

Cr	Ni	Mo	C	N
22.0 - 23.0	4.50 - 6.50	3.00 - 3.50	.030 Max	0.14 - 0.20
Mn	Si	P	S	Fe
2.00 Max	1.00 Max	.030 Max	.020 Max	Balance

Applications of Duplex 2205

Chemical process vessels, piping and heat exchangers
Pulp mill digesters, bleach washers, chip pre - steaming vessels
Food processing equipment
Oil field piping and heat exchangers
Flue gas desulfurization equipment

Corronsion Resistance

Excellent general corrosion resistance; superior to Grade 316 in most environments. Excellent resistance to localised corrosion including intergranular, pitting and crevice corrosion; the CPT of 2205 is generally at least 35° C. The grade is also resistant to chloride stress corrosion cracking (SCC) at temperatures of up to about 150° C. Grade 2205 will often perform well in environments which cause premature failure of austenitic grades. It has better resistance to sea water than grade 316.

Heat Resistance

Although 2205 has good high temperature oxidation resistance this grade, like other duplex stainless steels, suffers from embrittlement if held for even short times at temperatures above 300° C. If embrittled this can only be rectified by a full solution annealing treatment. Duplex stainless steels are almost never used above 300° C.