Standard Specification	ASTM A312,A213
Material	304,304L,316L,310S,321
Outer Diameter	6mm to 630mm
Wall Thickness	1mm to 30mm
Length	Max 16000mm
Type	Round
Delivery condition	Hot-finished or Cold-finished

Description:

1Cr18Ni9(304H),00Cr19Ni10(304L),1Cr18Ni9Ti(321),0Cr17Ni12Mo2(316)

00Cr17Ni14Mo2(316L),0Cr18Ni12Mo2Ti(316Ti),0Cr19Ni13Mo3(317)

00Cr19Ni13Mo3(317L),0Cr25Ni20(310S),1Cr19Ni11NB(317H)

9.Standard:

ChinaStandardGB13296-2007,GB/T14976-2002,GB/T14975-2002,GB/T12771-2008

U.S.AStandardASTMA312/A312M,ASTMA213/A213M,ASTMA269/A269M

GermanyStandardDIN2462,DIN17456

JapaneseStandardJISG3463,JISG3459

Applications:

We,thistypeseamlesssteelpipebewidelyusedinkindsofindustries:

Specifications

Designation:A312/A312M-04a

StandardspecificationsForSeamless,Welded,AndHeavilyColdWorkedAustenitic

StainlessSteelPipe

Thisspecificationcovers	Seamless,straight-seamlesswelded, andheavilycoldworkedausteniticstainlesssteelpipe
ManufactureProcess	Seamless(SML)Pipe
DiameterTolerance	+/-1%
PermittedVariationsIn WallThickness	Tolerance,%fromNominal NPSDesignator OverUnder 1/8to21/2inc.,allt/Dratios 2012.5 3to18inc.,t/Dupto5%incl. 22.512.5 3to18inc.,t/Dover5% 15 12.5 20andlarger,welded,allt/Dratios 17.512.5 20andlarger,seamless,t/Dupto5%incl. 22.5 12.5 20andlarger,seamless,t/Dover5% 15 12.5 Where:t=NominalWallThickness D=OrderedOutsideDiameter
Inspectionitem	1.Size(outside,wall,length); 2.SurfaceofPipe; 3.ChemicalComposition; 4.MechanicalTesting 5.Hydro-staticOrNondestructiveElectricTest 6.ICT(Inter-granularCorrosionTest)etc.
OrderingInformation	Quantity(feet,meters,ornumberoflengths) SteelGrade Size(outsidediameter,nominalwallthickness,length) Testreportrequirementsetc.

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