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GB/T12771 12Cr18Ni9 06Cr18Ni11Ti 304 / 316Welded Stainless Steel Pipes For Liquid Delivery

Categories Stainless Steel Tube
Brand Name: TORICH
Model Number: GB/T12771
Certification: ISO9001:2008,ISO14001:2008
Place of Origin: China
MOQ: 5 ton
Price: 1000-3000USD/TON
Payment Terms: L/C, D/A, D/P, T/T, Western Union, MoneyGram
Supply Ability: 50000Ton per year
Delivery Time: 30-35 work days
Packaging Details: in seaworthy packing
Material: Stainless Steel 201/304/316
Grade: S30210 S30408 S30403 S31008
Surface: pickling
Technique: Arc welding
OD: 3-500mm
WT: 0.5-50mm
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    GB/T12771 12Cr18Ni9 06Cr18Ni11Ti 304 / 316Welded Stainless Steel Pipes For Liquid Delivery

    Product Name:

    GB/T12771 12Cr18Ni9 06Cr18Ni11Ti Welded Stainless Steel Pipes For Liquid Delivery


    Standard: Size Range:

    GB/T12771 OD:5-500mm WT:0.5-50mm Length:3-9 M,according to customers' actual application and production.


    Application: For Liquid Delivery


    Steel Grade: 304/316/321/347/444


    Technology: arc welding


    Characteristic:

    Good concentricity

    Good surface quality

    Good OD and ID tolerance

    High Precision

    Stable quality

    Smooth Roughness

    TORICH QUALITY ASSURANCE


    Table 1 Tolerance of OD

    ClassificationDPermissible Tolerance
    AB
    HAll Dimensions±0.5% or ±0.20±0.75% or ±0.30
    T<40±0.20±0.30
    ≥40~<65±0.30±0.40
    ≥65~<90±0.40±0.50
    ≥90~<168.3±0.80±1.00
    ≥168.3~<325±0.75%D±1%D
    ≥325~<610±0.6%D±1%D
    ≥610±0.6%D±0.7%D or ±10

    WC

    SP

    <40±0.15±0.20
    ≥40~<60±0.20±0.30
    ≥60~<100±0.30±0.40
    ≥100~<200±0.4%D±0.5%D
    ≥200±0.5%D±0.75%D

    Table 2 Tolerance of WT

    Nominal WTPermissible Tolerance
    ≤0.5±0..10
    >0.5~1.0±0.15
    >1.0~2.0±0.20
    >2.0~<4.0±0.30
    ≥4.0±10%S

    Table 3 Bending degree

    Out diameter/mmBending degree/(mm/m)
    ≤108≤1.5
    >108~325≤2.0
    >325≤2.5

    Table4 The density of the steel and Calculation of Theoretic Weight

    No.Steel GradeDensity/(kg/dm3)The formula after conversion
    112Cr18Ni97.93W=0.02491S(D-S)
    206Cr19Ni10
    3022Cr19Ni107.90W=0.02482S(D-S)
    406Cr18Ni11Ti8.03W=0.02507S(D-S)
    506Cr25Ni207.98W=0.02507S(D-S)
    606Cr17Ni12Mo28.00W=0.02513S(D-S)
    7022Cr17Ni12Mo2
    806Cr18Ni11Nb8.03W=0.02523(D-S)
    9022Cr18Ti7.70W=0.02419(D-S)
    10022Cr18Ti7.75W=0.02435S(D-S)
    1106Cr13Al
    12022Cr19Mo2NbTi
    13022Cr12Ni
    1406Cr13

    Table 5 Steel Grade and Chemical Component(Melting Analysis)

    No.TypeUnified digital codeGradeChemical Componenet(Quality Fraction)/%
    CSiMnPSNiCrMoNOthers
    1AusteniteS3021012Cr18Ni9≤0.15≤0.75≤2.00≤0.040≤0.0308~1017~19-≤0.10-
    2S3040806Cr19Ni10≤0.08≤0.75≤2.00≤0.040≤0.0308~1118~20---
    3S30403022Cr19Ni10≤0.030≤0.75≤2.00≤0.040≤0.0308~1218~20---
    4S3100806Cr25Ni20≤0.08≤1.50≤2.00≤0.040≤0.03019~2224~26---
    5S3160806Cr17Ni12Mo2≤0.08≤0.75≤2.00≤0.040≤0.03010~1416~182~3--
    6S31603022Cr17Ni12Mo2≤0.08≤0.75≤2.00≤0.040≤0.03010~1416~182~3--
    7S3216806Cr18Ni11Ti≤0.08≤0.75≤2.00≤0.040≤0.0309~1217~19--Ti5×C~0.70
    8S3477806Cr18Ni11Nb≤0.08≤0.75≤2.00≤0.040≤0.0309~1217~19--Nb10×C~1.10
    9FerriteS11863022Cr18Ti≤0.03≤0.75≤1≤0.04≤0.03(0.60)16~19--Ti or Nb 0.1~1
    10S11972019Cr19Mo2NbTi≤0.025≤0.75≤1≤0.04≤0.031.0017.5~19.501.75~2.50≤0.035(Ti+Nb)[0.2+4(C+N)]~0.8
    11S1134806Cr13Al≤0.08≤0.75≤1≤0.04≤0.03(0.60)11.50~14.50--Al:0.1~0.3
    12S11163022Cr11Ti≤0.03≤0.75≤1≤0.04≤0.02(0.60)10.5~11.7-≤0.03Ti≥8(C+N),Ti0.15~0.5,Nb0.1
    13S11213022Cr12Ni≤0.03≤0.75≤1.5≤0.040.0150.3~110.5~12.5-≤0.03
    14MartensiticS4100806Cr13≤0.08≤0.75≤1≤0.04≤0.03(0.60)11.5~13.5---

    Table 6 Heat treatment system of steel pipe

    NumberTypeNew BrandOld BrandRecommended heat treatment system
    1Austenite12Cr18Ni91Cr18Ni9solution treatment

    1010℃~1150℃

    rapid cooling

    206Cr19Ni100Cr18Ni9

    1010℃~1150℃

    rapid cooling

    3022Cr19Ni1000Cr19Ni10

    1010℃~1150℃

    rapid cooling

    406Cr25Ni200Cr25Ni20

    1030℃~1180℃

    rapid cooling

    506Cr17Ni12Mo20Cr17Ni12Mo2

    1010℃~1150℃

    rapid cooling

    6022Cr17Ni12Mo200Cr17Ni14Mo2

    1010℃~1150℃

    rapid cooling

    706Cr18Ni11Ti0Cr18Ni10Ti

    920℃~1150℃

    rapid cooling

    806Cr18Ni11Nb0Cr18Ni11Nb

    980℃~1150℃

    rapid cooling

    9Ferritic022Cr18Ti00Cr17Annealing treatment780℃~950℃ rapid cooling or slow cooling
    10019Cr19Mo2NbTi00Cr18Mo2

    800℃~1050℃

    rapid cooling

    1106Cr13Al0Cr13Al780℃~830℃ rapid cooling or slow cooling
    12022Cr11Ti--

    830℃~950℃

    rapid cooling

    13022Cr12Ni--

    830℃~950℃

    rapid cooling

    14Martensitic06Cr130Cr13750℃ rapid cooling or 800℃~900℃ slow cooling
    The demand side stipulates that the stabilization heat treatment system is 850 C ~930 C rapid cooling when the heat treatment needs to be stabilized after the solution heat treatment.

    Table 7 Mechanical properties of steel tubes.

    NumberNew BrandOla Brand

    non-proportional extension strength /

    MPa

    tensile strength

    /

    MPa

    elongation after fracture

    A/

    %

    Heat treatment conditionNon-heat treatment condition
    Not less than
    112Cr18Ni91Cr18Ni92105203225
    206Cr19Ni100Cr18Ni9210520
    3022Cr19Ni1000Cr19Ni10180480
    406Cr25Ni200Cr25Ni20210520
    506Cr17Ni12Mo20Cr17Ni12Mo2210520
    6022Cr17Ni12Mo200Cr17Ni14Mo2180480
    706Cr18Ni11Ti0Cr18Ni10Ti210520
    806Cr18Ni11Nb0Cr18Ni11Nb210520
    9022Cr18Ti00Cr1718036020--
    10019Cr19Mo2NbTi00Cr18Mo2240410
    1106Cr13Al0Cr13Al177410
    12022Cr11Ti--27540018--
    13022Cr12Ni--27540018--
    1406Cr130Cr1321041020--

    Table 8 Methods of sampling and test for steel pipe inspection

    NumberInspection ItemNumber of SamplingSampling MethodTest Method
    1Chemical Composition1 samples per stoveGB/T 20066GB/T 223,GB/T 11170,GB/T 20123,GB/T 20124
    2Tensile Test1 samples per batch on two steel tubesGB/T 2975GB/T 228
    3Hydraulic Pressure TestOne by one__GB/T 241
    4Eddy Current TestOne by one__GB/T 7735
    5Flattening Test1 samples per batch on 1 steel tubeGB/T 246GB/T 246
    6Transverse Bending Test of Welds1 samples per batch on 1 steel tubeGB/T 232GB/T 232
    7Intercryctalline Corrosion1 samples per batch on 1 steel tubeGB/T 4334.5GB/T 4334.5
    8Radiographic Test6.6 steel tube__GB/T 3323
    9Flange Test1 samples per batch on 1 steel tubeGB/T 245GB/T 245
    10Austenite Grain Size1 samples per batch on 1 steel tubeGB/T 6394GB/T 6394
    11Impact Test for Welded JointAgreementGB/T 2650GB/T 2650


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