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GB/T12770 12Cr18Ni9 019Cr19Mo2NbTi Welded Stainless Steel Tubes for Mechanical Structures

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    Buy cheap GB/T12770 12Cr18Ni9 019Cr19Mo2NbTi Welded Stainless Steel Tubes for Mechanical Structures from wholesalers
     
    Buy cheap GB/T12770 12Cr18Ni9 019Cr19Mo2NbTi Welded Stainless Steel Tubes for Mechanical Structures from wholesalers
    • Buy cheap GB/T12770 12Cr18Ni9 019Cr19Mo2NbTi Welded Stainless Steel Tubes for Mechanical Structures from wholesalers
    • Buy cheap GB/T12770 12Cr18Ni9 019Cr19Mo2NbTi Welded Stainless Steel Tubes for Mechanical Structures from wholesalers
    • Buy cheap GB/T12770 12Cr18Ni9 019Cr19Mo2NbTi Welded Stainless Steel Tubes for Mechanical Structures from wholesalers
    • Buy cheap GB/T12770 12Cr18Ni9 019Cr19Mo2NbTi Welded Stainless Steel Tubes for Mechanical Structures from wholesalers
    • Buy cheap GB/T12770 12Cr18Ni9 019Cr19Mo2NbTi Welded Stainless Steel Tubes for Mechanical Structures from wholesalers

    GB/T12770 12Cr18Ni9 019Cr19Mo2NbTi Welded Stainless Steel Tubes for Mechanical Structures

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    Brand Name : TORICH
    Model Number : GB/T12770
    Certification : ISO9001:2008,ISO14001:2008
    Price : negotiable
    Payment Terms : L/C, D/A, D/P, T/T, Western Union, MoneyGram
    Supply Ability : 50000Ton per year
    Delivery Time : 30-35 work days
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    GB/T12770 12Cr18Ni9 019Cr19Mo2NbTi Welded Stainless Steel Tubes for Mechanical Structures

    Product Name: GB/T12770 Material 12Cr18Ni9 019Cr19Mo2NbTi Welded Stainless Steel Tubes for Mechanical Structures


    Size range: O.D.:3-500mm W.T.:0.5-50mm L:2000-12000mm according to customers' actual application and production.


    Application : For Mechanical Structures purposes


    Steel Grade: 12Cr18Ni9,06Cr19Ni10,022Cr19Ni10,06Cr25Ni20,022Cr22Ni5Mo3N,019Cr19Mo2NbTi,06Cr13Al


    Characteristic:

    Good concentricity

    Good surface quality

    Good OD and ID tolerance

    High Precision

    Stable quality

    Smooth Roughness

    TORICH QUALITY ASSURANCE


    Table1Tolerance of OD

    ClassificationNominal ODPermissible Tolerance
    PCPBPA

    H

    T

    		＜25±0.20±0.15±0.10
    ≥25~＜40±0.30±0.25±0.20
    ≥40~＜63±0.50±0.30±0.25
    ≥63~＜90±0.60±0.50±0.40
    ≥90~＜159±0.80±0.65±0.50
    ≥159~＜300±0.8%D±0.7%D±0.5%D
    ≥300~＜610±0.1%D±0.8%D±0.6%D
    ≥10protocolprotocolprotocol

    WC

    SP

    		＜25±0.15±0.12±0.10
    ≥25~＜40±0.20±0.15±0.13
    ≥40~＜50±0.20±0.18±0.15
    ≥50~＜60±0.25±0.20±0.18
    ≥60~＜90±0.30±0.28±0.25
    ≥90~＜100±0.40±0.35±0.30
    ≥100~＜200±0.5%D±0.4%Dprotocol
    ≥200protocolprotocolprotocol

    Table 2Tolerance 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

    Nominal Wall Thickness/mmBending Degree/(mm/m)
    ≤108≤1.0
    ＞108~325≤1.5
    ＞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)
    406Cr25Ni207.98W=0.02507S(D-S)
    506Cr17Ni12Mo28.00W=0.02513S(D-S)
    6022Cr17Ni12Mo2
    706Cr18Ni11Ti8.03W=0.02523S(D-S)
    806Cr18Ni11Nb
    9022Cr22Ni5Mo3N7.80W=0.02450S(D-S)
    10022Cr23Ni5Mo3N
    11022Cr25Ni7Mo4N
    12022Cr18Ti7.70W=0.02491S(D-S)
    13019Cr19Mo2NbTi7.75W=0.02435S(D-S)
    1406Cr13Al
    15022Cr11Ti
    16022Cr12Ni
    1706Cr13

    Table 5 Steel Grade and Chemical Componenet

    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--Ti15C~0.70
    8S3477806Cr18Ni11Nb≤0.08≤0.75≤2.00≤0.040≤0.0309~1217~19--Nb110C~1010
    9BipolarS22253022Cr22Ni5Mo3N≤0.030≤1.00≤2.00≤0.030≤0.0204.5~6.521~232.5~3.50.08~0.20
    10S22053022Cr23Ni5Mo3N≤0.030≤1.00≤2.00≤0.030≤0.0204.5~6.522~233~3.50.14~0.20
    11S25073022Cr25Ni7Mo4N≤0.030≤0.80≤1.20≤0.035≤0.0206~824~263~50.24~0.32Cu≤0.50
    12FerriteS11863022Cr18Ti≤0.03≤0.75≤1≤0.04≤0.03(0.60)16~19--Ti or Nb:0.1~1
    13S11972019Cr19Mo2NbTi≤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
    14S1134806Cr13Al≤0.08≤0.75≤1≤0.04≤0.03(0.60)11.50~14.50--Al:0.1~0.3
    15S11163022Cr11Ti≤0.03≤0.75≤1≤0.04≤0.02(0.60)10.50~11.70-≤0.030Ti≥8(C+N),Ti:0.15~0.50,Nb≤0.10
    16S11213022Cr12Ni≤0.03≤0.75≤1.5≤0.04≤0.0150.3~1.0010.50~12.50-≤0.030
    17MartensiticS4100806Cr13≤0.08≤0.75≤1≤0.04≤0.03(0.60)11.50~13.50---
    Note:The number in brackets is the maximum allowed to be added. Chemical component of some grade is different from GB/T20878.

    Table 6 Recommendatory heat treating regime of the steel tubes

    No.TypeSteel gradeRecommendatory heat treating regime
    1Austenite12Cr18Ni91010℃~1150℃,water-cooling or other methods of rapid cooling
    206Cr19Ni101010℃~1150℃,water-cooling or other methods of rapid cooling
    3022Cr19Ni101010℃~1150℃,water-cooling or other methods of rapid cooling
    406Cr25Ni201030℃~1180℃,water-cooling or other methods of rapid cooling
    506Cr17Ni12Mo21010℃~1150℃,water-cooling or other methods of rapid cooling
    6022Cr17Ni12Mo21010℃~1150℃,water-cooling or other methods of rapid cooling
    706Cr18Ni11Ti920℃~1150℃,water-cooling or other methods of rapid cooling
    806Cr18Ni11Nb980℃~1150℃,water-cooling or other methods of rapid cooling
    9Dual-phase steel022Cr22Ni5Mo3N1020℃~1100℃,water-cooling
    10022Cr23Ni5Mo3N1020℃~1100℃,water-cooling
    11022Cr25Ni7Mo4N1025℃~1125℃,water-cooling
    12Ferritic022Cr18Ti780℃~950℃,rapid cooling or slow cooling
    13019Cr19Mo2NbTi800℃~1050℃,rapid cooling
    1406Cr13Al780℃~830℃,rapid cooling or slow cooling
    15022Cr11Ti800℃~900℃,rapid cooling or slow cooling
    16022Cr12Ni700℃~820℃,rapid cooling or slow cooling
    17Martensite06Cr13750℃,rapid cooling ；800℃~900℃,slow cooling

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    large diameter stainless steel tube

      
    Quality GB/T12770 12Cr18Ni9 019Cr19Mo2NbTi Welded Stainless Steel Tubes for Mechanical Structures for sale

    GB/T12770 12Cr18Ni9 019Cr19Mo2NbTi Welded Stainless Steel Tubes for Mechanical Structures

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