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TORICH 321 302 310S Welded Stainless Steel Tube GB/T 12770 OD 4-1200mm

Categories Stainless Steel Tube
Brand Name: TORICH
Model Number: GB/T 12770
Certification: ISO 9001 ISO 14001 TS 16949
Place of Origin: Zhejiang,China
MOQ: 0.5 Ton
Price: negotiable
Payment Terms: L/C, D/A, D/P, T/T, Western Union, MoneyGram
Supply Ability: 10000 Ton/Year
Delivery Time: 15-30 days
Packaging Details: Packing in wooden, hexagonal box or other seaworthy ways
Product Name:: TORICH 321 302 310S Stainless Steel Welded Steel Tube for Mechanical Structure GB/T 12770
Keyword:: Welded Stainless Steel Tubes
Material:: 304/304L 316/316L 321 302 310S
Shape:: Round
Usage:: Mechanical Structure Purpose Or Decoration
OD:: 4-1200mm
WT:: 0.3-200m
Length:: 1-12m
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    TORICH 321 302 310S Welded Stainless Steel Tube GB/T 12770 OD 4-1200mm

    TORICH 321 302 310S Stainless Steel Welded Steel Tube for Mechanical Structure GB/T 12770


    SPEC:

    Material:304/304L 316/316L 321 302 310S

    Size Range:OD:4-1200mm

    WT:0.3-200mm

    General Length:2-12m


    Tolerance:

    According to the following tables or customers’ request.

    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 A.1 Comparison table of stainless steel brands in each standard

    NumberGB/T 20878-2007

    ASTM A

    959-09

    JIS G 4303-2005

    JIS G 4311-1991

    ISO/TS 15510: 2003

    ISO 4955: 2005

    EN10088: 1-2005

    ROCT

    5632-1972

    NumberUnified digital codeNew BrandOld Brand
    113S3021012Cr18Ni91Cr18Ni9S30200,302SUS302X10CrNi18-8X10CrNi18-8,1.431012X18H9
    217S3040806Cr19Ni100Cr18Ni9S30400,304SUS304X5CrNi18-10X5CrNi18-10,1.4301--
    318S30403022Cr19Ni1000Cr19Ni10S30403,304LSUS304LX2CrNi19-11X2CrNi19-11,1.430603X18H11
    435S3100806Cr25Ni200Cr25Ni20S31008,310SSUS310SX12CrNi23-12X12CrNi23-12,1.484510X23H18
    538S3160806Cr17Ni12Mo20Cr17Ni12Mo2S31600,316SUS316X5CrNiMo17-12-2X5CrNiMo17-12-2,1.4401--
    639S31603022Cr17Ni12Mo200Cr17Ni14Mo2S31603,316LSUS316LX2CrNiMo17-12-2X2CrNiMo17-12-2,1.440403X17H14M2
    755S3216806Cr18Ni11Ti0Cr18Ni10TiS32100,321SUS321X6CrNiTi18-10X6CrNiTi18-10,1.454108X18H10T
    862S3477806Cr18Ni11Nb0Cr18Ni11NbS34700,347SUS347X6CrNiNb18-10X6CrNiNb18-10,1.455008X18H12B
    970S22253022Cr22Ni5Mo3N00Cr22Ni5Mo3NS31803SUS329J3LX2CrNiMoN22-5-3X2CrNiMoN22-5-3,1.4462--
    1071S22053022Cr23Ni5Mo3N00Cr22Ni5Mo3NS32205,2205--------
    1176S25073022Cr25Ni7Mo4N00Cr25Ni7Mo4NS32750,2507--X2CrNiMoN25-7-4X2CrNiMoN25-7-4,1.4410--
    1287S11863022Cr18Ti00Cr17S43035,439X3CrTi17X3CrTi17,1.451008X17T
    1392S11972019Cr19Mo2NbTi00Cr18Mo2S44400,444X2CrMoTi18-2X2CrMoTi18-2,1.4521--
    1478S1134806Cr13Al00Cr13AlS40500,405SUS405X6CrAl13X6CrAl13,1.4002--
    1580S11163022Cr11Ti00Cr12TiS40900X2CrTi12X2CrTi12,1.4512--
    1682S11213022Cr12Ni00Cr12NiS40977--X2CrNi12X2CrNi12,1.4003--
    1797S4100806Cr130Cr13S41008,410SX6Cr13X6Cr13,1.400008X13

    Characteristic:

    Good concentricity

    Good surface quality

    Good OD and ID tolerance

    High Precision

    Stable quality

    Smooth Roughness

    TORICH QUALITY ASSURANCE


    Processing:Single-sided automatic arc welding or Double-sided automatic arc welding


    Technical Delivery Conditions:Heat treatment+pickling or NBK


    Widely used in the field of:Construction & Decoration


    QUALITY CONTROL

    1~ Incoming Raw Material Inspection
    2~ Raw Material Segregation to avoid steel grade mix-up
    3~ Heating and Hammering End for Cold Drawing
    4~ Cold Drawing and Cold Rolling, on line inspection
    5~ Heat Treatment, +A, +SRA, +LC, +N, Q+T
    6~ Straightening-Cutting to specified length-Finished Measuring Inspection
    7~ Machanical Testing in own labs with Tensile Strength, Yield Strength, Elongation, Hardness, Impact, Mictrostruture etc
    8~ Packing and Stocking.


    100% of our steel tubes are dimensionally checked
    100% of our steel tubes are visually checked to assure they have a perfect surface condition and no surface defects.
    100% eddy current test and ultrosonic test to eliminate longitudinal and transversal defects.


    Product Images:


    321 302 310S Stainless Steel Welded Steel Tube for Mechanical Structure GB/T 12770321 302 310S Stainless Steel Welded Steel Tube for Mechanical Structure GB/T 12770321 302 310S Stainless Steel Welded Steel Tube for Mechanical Structure GB/T 12770321 302 310S Stainless Steel Welded Steel Tube for Mechanical Structure GB/T 12770

    FAQ

    Q: Are you trading company or manufacturer ?

    A: A professional steel pipes materials inventor, manufacturer and solution provider

    Q: How long is your delivery time?

    A: Generally it is 7-14 days if the goods are in stock. or it is 30-60 days if the goods are not in stock, and it is according to quantity.

    Q: Do you provide samples ? is it free or extra ?

    A: Yes, we could offer the sample for free charge but you need to pay the cost of freight.

    Q: What is your terms of payment ?

    A: Payment<=1000USD, 100% in advance. Payment>=1000USD, 30% T/T in advance , balance before shippment.
    If you have another question, pls feel free to contact us

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