Duplex Stainless Steel Pipe UNS S31803 S32205 S32750 S32760
1. Item: Stainless Steel Tube / SS Pipe
2. Standard: ASTM, AISI, GB, JIS, as customers' request
3. Technique: Annealed and Pickled, Polished, Bright Annealed, Cold Drawn
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Description

Duplex stainless steels are called “duplex” because they have a two-phase microstructure consisting of grains of ferritic and austenitic stainless steel. Standard: ASTM A789,ASTM A790, ASTM A213, A269, A312, A511, A789, A790 and so on .

Introduction:

Product Name: Duplex stainless steel pipe price UNS S31803 S32205 S32750 S32760 

Duplex stainless steels are called “duplex” because they have a two-phase microstructure consisting of grains of ferritic and austenitic stainless steel. 
Standard: ASTM A789,ASTM A790, ASTM A213, A269, A312, A511, A789, A790, A376, EN 10216-5, EN 10297,DIN 17456, DIN 17458,JISG3459, JIS GS3463, GS3467, JIS G3448, GOST 9940, GOST 9941,GB/T 21833

Material: S32750 ,S32760 , UNS S32304, UNS S32205, UNS S31803, UNS 32160,UNS S32101,

Nominal Dia: 1/2 "to 32" NB for seamless pipe

Schedules: 5S, 10S, 40S, 80S, 10, 20, 30...120, 140, 160, XXS 

All dimensions are in accordance with ANSI B36.19 and ANSI B36.10 

Size Range for tubing: OD:1/4" (6.25mm) to 8" (203mm), WT: 0.02" (0.5mm) to 0.5"(12mm)

Length: 5.8m, 6m, 11.8m, 12m, 30m(Max) or as your requirement

Process: Cold drawn, Cold rolled, Precision Rolled for Seamless Pipe or Tube

Finish: Annealed & pickled, bright annealing, polished

Ends: Beveled or plain end, square cut, burr free ,Plastic Cap at Both end

 

Specification:

 Chemical composition of typical duplex stainless steel pipe:

 


CMnPSSiCrNiMoNCu
UNS S321010.03max2.0max0.03max0.03max1.0max20.0~23.01.0~3.00.6max0.05~0.171.0max
UNS S318030.03max2.0max0.03max0.02max1.0max21.0~23.04.5~6.52.5~3.50.08~0.20/
UNS S322050.03max2.0max0.03max0.02max1.0max22.0~23.04.5~6.53.0~3.50.14~0.20/
UNS S327500.03max1.2max0.035max0.02max0.8max24.0~26.06.0~8.03.0~5.00.24~0.320.5max

 

Inspection and Test:

1.100% PMI,Spectro Chemical Aanlysis Test for Raw Material
2.100% Dimension & Visual Examination 
3. Mechanical Properties Test Include Tension Test,Flaring Test (For Seamless tube/pipe)/ Flange Test (For Welded Pipe & Tube), Hardness Test ,Reversed Flattening Test
4.100% Hydrostatic Test or 100% NON-DESTRUCTIVE Test  (ET or UT) 
5.Radiographic Test for Welded Pipe (shall be accordance with specification,or shall be as agreed upon between the purchaser and vendor)
6.Straightness Test  (optional)
7.Roughness Test (optional)
8.Intergranular Corrosion Test(optional)
9.Impact Test (optional)
10.Grain Size Determinations (optional)

 

Application:

Duplex stainless steels are called “duplex” because they have a two-phase microstructure consisting of grains of ferritic and austenitic stainless steel.  
Standard: ASTM A789,ASTM A790, ASTM A213, A269, A312, A511, A789, A790, A376, EN 10216-5, EN 10297,DIN 17456, DIN 17458,JISG3459, JIS GS3463, GS3467, JIS G3448, GOST 9940, GOST 9941,GB/T 21833.