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Seamless steel raj rau ib txwm qauv

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  • Seamless steel raj rau ib txwm qauv
  • Seamless steel raj rau ib txwm qauv
  • Seamless steel raj rau ib txwm qauv

Lus piav qhia luv luv:

Seamless steel raj rau cov hom phiaj kev tsim kho, Seamless steel raj rau cov khoom siv kho tshuab hauvGB/8162-2008Txuj. Cov khoom muaj xws li cov pa roj carbon zoo thiab cov hlau tsis tshua muaj hlau, xws li 10,20,35,45 thiab Q345, Q460, Q490,42CrMo, 35CrMo.


  • Kev Them Nyiaj:30% tso nyiaj, 70% L / C lossis B / L daim ntawv lossis 100% L / C thaum pom
  • Min. Order Quantity:1 pc ua
  • Muaj peev xwm muab khoom:Txhua xyoo 20000 Tons Cov Khoom Muag ntawm Cov Yeeb Nkab Hlau
  • Lub Sijhawm Lead:7-14 hnub yog nyob rau hauv Tshuag, 30-45 hnub los tsim
  • Ntim:Dub Vanishing, bevel thiab cap rau txhua tus yeeb nkab; OD hauv qab 219 hli yuav tsum tau ntim rau hauv pob, thiab txhua pob khoom tsis pub tshaj 2 tons.
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    Product Detail

    q345 ua

    Khoom cim npe

    Txheej txheem cej luam

    Txheem:GB/8162-2008 Alloy los yog Tsis: Alloy los yog carbon
    Qib: 10,20,35,45,Q345,Q460,Q490,Q620,42CrMo,35CrMo, thiab lwm yam Daim ntawv thov: Cov yeeb nkab zoo, cov yeeb nkab tshuab
    Thickness: 1-100 hli Kev kho deg: Raws li cov neeg siv khoom xav tau
    Sab nraud txoj kab uas hla (Round): 10 - 1000 mm Txheej Txheem: Kub Rolled lossis Cold Rolled
    Length: Tsau ntev lossis random ntev Kev kho cua sov: Annealing/Normalizing/Stress Relieving
    Tshooj Shape: Round Cov yeeb nkab tshwj xeeb: Cov yeeb nkab phab ntsa tuab
    Qhov chaw ntawm Keeb Kwm: Suav teb Siv: Kev tsim kho, mechanical
    Ntawv pov thawj: ISO9001: 2008 Test: ECT/UT

    Daim ntawv thov

    Nws yog siv los ua Carbon Structural Steel, Alloy Structural Steel thiab mechanical structures.

    Qib tseem ceeb

    Qib Ntawm Carbon Steel Qauv: 10,20,35,45,Q345,Q460,Q490,Q620,, thiab lwm yam

    Qib ntawm Alloy Structural Steel: 42CrMo, 35CrMo, thiab lwm yam

    Chemical Component

    Qib Steel Qib zoo Tshuaj muaj pes tsawg leeg
    C Si Mn P S Nb V Ti Cr Ni Cu Nd Mo B Als"
    tsis muaj ntau dua tsis tsawg dua
    q345 ua A 0.2 0.5 1.7 0.035 ib 0.035 ib       0.3 0.5 0.2 0.012 ib 0.1 —— —
    B 0.035 ib 0.035 ib
    C 0.03 ib 0.03 ib 0.07 ib 0.15 0.2 0.015 ib
    D 0.18 0.03 ib 0.025 ib
    E 0.025 ib 0.02 ib
    q390 ua A 0.2 0.5 1.7 0.035 ib 0.035 ib 0.07 ib 0.2 0.2 0.3 0.5 0.2 0.015 ib 0.1 — —
    B 0.035 ib 0.035 ib
    C 0.03 ib 0.03 ib 0,015 ib
    D 0.03 ib 0.025 ib
    E 0.025 ib 0.02 ib
    qw 42o A 0.2 0.5 1.7 0.035 ib 0.035 ib 0.07 ib 0.2 0.2 0.3 0.8 ua 0.2 0.015 ib 0.2 —— ——
    B 0.035 ib 0.035 ib
    C 0.03 ib 0.03 ib 0.015 ib
    D 0.03 ib 0.025 ib
    E 0.025 ib 0.02 ib
    qw 46o C 0.2 0.6 1.8 0.03 ib 0.03 ib 0.11 0.2 0.2 0.3 0.8 ua 0.2 0.015 ib 0.2 0.005 ib 0.015 ib
    D 0.03 ib 0.025 ib
    E 0.025 ib 0.02 ib
    q500 ua C 0j 8 0.6 1.8 0.025 ib 0.02 ib 0.11 0.2 0.2 0.6 0.8 ua 0.2 0.015 ib 0.2 0.005 ib 0.015 ib
    D 0.025 ib 0.015 ib
    E 0.02 ib 0.01 ib
    q550 ua C 0.18 0.6 2 0.025 ib 0,020 ua 0.11 0.2 0.2 0.8 ua 0.8 ua 0.2 0.015 ib 0.3 0.005 ib 0.015 ib
    D 0.025 ib 0,015 ib
    E 0.02 ib 0.01 ib
    qw 62o C 0.18 0.6 2 0.025 ib 0.02 ib 0.11 0.2 0.2 1 0.8 ua 0.2 0.015 ib 0.3 0.005 ib 0.015 ib
    D 0.025 ib 0.015 ib
    E 0.02 ib 0.01 ib
    A. Ntxiv rau Q345A thiab Q345B qib, cov hlau yuav tsum muaj tsawg kawg yog ib qho ntawm cov khoom ua kom zoo zoo Al, Nb, V, thiab Ti. Raws li kev xav tau, tus neeg muag khoom tuaj yeem ntxiv ib lossis ntau cov khoom ua kom zoo zoo. Tus nqi siab tshaj plaws yuav tsum yog raws li tau teev tseg hauv cov lus. Thaum ua ke, Nb + V + Ti tsis ntau tshaj 0.22% b. Rau Q345, Q390, Q420 thiab Q46O qib, Mo + Cr tsis ntau dua 0.30%c. Thaum Cr thiab Ni ntawm txhua qib yog siv los ua cov khoom seem, cov ntsiab lus ntawm Cr thiab Ni yuav tsum tsis txhob siab dua 0.30%; thaum nws tsim nyog ntxiv, cov ntsiab lus yuav tsum ua kom tau raws li qhov yuav tsum tau ua hauv lub rooj lossis txiav txim siab los ntawm tus neeg muag khoom thiab tus neeg yuav khoom los ntawm kev sib tham.d. Yog tias tus neeg muag khoom tuaj yeem ua kom ntseeg tau tias cov ntsiab lus nitrogen ua tau raws li qhov yuav tsum tau ua hauv lub rooj, kev tshuaj xyuas cov ntsiab lus nitrogen yuav tsis ua. Yog tias Al, Nb, V, Ti thiab lwm yam hlau alloy nrog nitrogen fixation ntxiv rau cov hlau, cov ntsiab lus nitrogen tsis txwv. Cov ntsiab lus ntawm nitrogen fixation yuav tsum tau teev nyob rau hauv daim ntawv pov thawj zoo.
    E. Thaum siv tag nrho txhuas, tag nrho cov ntsiab lus txhuas Alt ≥ 0020%.

    Qib

    Carbon sib npaug CEV (mass feem) /%

    Nominal phab ntsa thickness s≤ 16mm

    Nominal phab ntsa thickness S2> 16 mm ~ 30 mm

    Nominal phab ntsa thickness S> 30mm

    Kub dov los yog normalized normalized

    Quenching + tempering

    Kub dov los yog normalized

    Quenching + tempering

    Kub dov los yog normalized

    Quenching + tempering
    q345 ua

    <0.45

    —

    <0.47

    —

    <0.48

    Ib
    q390 ua

    <0.46

    Ib

    wb 0.48

    —

    <0.49

    —
    q420 ua

    <0.48

    Ib

    <0.50

    <0.48

    <0.52

    <0,48
    q460 ua

    <0.53

    <0.48

    wb 0,55

    <0.50

    <0.55

    wb 0.50
    q500 ua

    Ib

    <0.48

    Ib

    <0.50

    Ib

    wb 0.50
    q550 ua

    —

    <0.48

    . ib

    <0.50

    Ib

    <0.50
    qw 62o

    —

    <0.50

    —

    <0.52

    —

    wb 0,52
    q690 ua

    —

    		 <0.50

    —

    <0.52

    —

    wb 0,52

    Mechanical Property

    Mechanical zog ntawm high-quality carbon steel structural steel thiab low-alloy high-strength structural steel kav

    Qib Qib zoo Yield zog Tsawg tawm los zog Elongation tom qab tawg Impact test
     
    Nominal phab ntsa thickness kub Absorb zog
    <16 hli > 16 hli ~ 〉 30 mm
     
    30 mm
    tsis tsawg dua tsis tsawg dua
    10 — > 335 205 195 185 24 — —
    15 — > 375 225 215 205 22 — Ib
    20 —— > 410 245 235 225 20 — —
    25 — > 450 275 265 255 18 — —
    35 — > 510 305 295 285 17 Ib —
    45 — 2590 ib 335 325 315 14 — —
    20 Mn —• > 450 275 265 255 20 — Ib
    25 Mn — > 490 295 285 275 18 — —
    q345 ua A 470-630 : kuv 345 325 295 20 — Ib
    B 4 ~ 20 34
    C 21 0
    D -20
    E -40 27
    qw 39o A 490-650 : kuv 390 370 350 18    
    B 20 34
    C 19 0
    D -20
    E -40 27
    qw 42o A 520-680 Nws 420 400 380 18    
    B 20 34
    C 19 0
    D -20
    E -40 27
    qw 46o C 550—720 460 440 420 17 0 34
    D -20
    E -40 27
    q500 ua C 610-770 Ib 500 480 440 17 0 55
    D -20 47
    E -40 31
    q550 ua C 670-830 Nws 550 530 490 ib 16 0 55
    D -20 47
    E -40 31
    qw 62o C 710-880 Ib 620 590 ua 550 15 0 55
    D -20 47
    E -40 31
    q690 ua C 770-94 Ib. 690 ib 660 620 14 0 55
    D -20 47
    E -40 31

    Mechanical zog ntawm alloy steel kav

    NO Qib Pom zoo kev kho cua sov Tensile zog Annealed los yog kub tempered steel yeeb nkab xa khoom mob Brinell hardness HBW
    Quenching (normalizing) Tempering Yield StrengthMPa Tensile zog MPa Elongation tom qab tawg A%
    kub Coolant Kub Coolant
    Thawj Thib ob tsis tsawg dua tsis muaj ntau dua
    1 40mn 2 840 ua   Dej, roj 540 Dej, roj 885 ib 735 ib 12 217
    2 45mn 2 840 ua   Dej, roj 550 Dej, roj 885 ib 735 ib 10 217
    3 27 Sib 9 20   Dej 450 Dej, roj 980 ua 835 ib 12 217
    4 40 MnBc 850   roj 500 Dej, roj 980 ua 785 ib 10 207
    5 45 Mnbc 840 ua   roj 500 Dej, roj 1 030 835 ib 9 217
    6 20 Mn2bc'f 880 ua   roj 200 Dej, cua 980 ua 785 ib 10 187
    7 20 CrdJ 880 ua 800 Dej, roj 200 Dej, cua 835 ib 540 10 179
    785 ib 490 ib 10 179
    8 30 Cr 860 ua   roj 500 Dej, roj 885 ib 685 ib 11 187
    9 35cr ua 860 ua   roj 500 Dej, roj 930 ua 735 ib 11 207
    10 40 Cr 850   roj 520 Dej, roj 980 ua 785 ib 9 207
    11 45cr ua 840 ua   roj 520 Dej, roj 1 030 835 ib 9 217
    12 50 Cr 8 30   roj 520 Dej, roj 1 080 930 ua 9 229
    13 38cr ib 900   roj 600 Dej, roj 980 ua 835 ib 12 255
    14 20CrModJ 880 ua   Dej, roj 500 Dej, roj 885 ib 685 ib 11 197
    845 ib 635 ib 12 197
    15 35CrMo 850   roj 550 Dej, roj 980 ua 835 ib 12 229
    16 42CrMo 850   roj 560 Dej, roj 1 080 930 ua 12 217
    17 38CrMoAld 940 ua   Dej, roj 640 Dej, roj 980 ua 835 ib 12 229
    930 ua 785 ib 14 229
    18 50 CrVA 860 ua   roj 500 Dej, roj 1 275 1 130 10 255
    19 2 OCrMn 850   roj 200 Dej, cua 930 ua 735 ib 10 187
    20 20CrMnSif 880 ua   roj 480 Dej, roj 785 ib 635 ib 12 207
    21 3OCrMnSif 880 ua   roj 520 Dej, roj 1 080 885 ib 8 229
    980 ua 835 ib 10 229
    22 35CrMnSiA£ 880 ua   roj 230 Dej, cua 1 620   9 229
    23 20CrMnTie-f 880 ua 870 ib roj 200 Dej, cua 1 080 835 ib 10 217
    24 30CrMnTie*f 880 ua 850 roj 200 Dej, cua 1470 ib   9 229
    25 12 CrNi2 860 ua 780 ua Dej, roj 200 Dej, cua 785 ib 590 ua 12 207
    26 12 CrNi3 860 ua 780 ua roj 200 Dej, cua 930 ua 685 ib 11 217
    27 12 Cr2Ni4 860 ua 780 ua roj 200 Dej, cua 1 080 835 ib 10 269
    28 40CrNiMoA 850 —— roj 600 Dej, cua 980 ua 835 ib 12 269
    29 45CrNiMoVA 860 ua — roj 460 roj 1470 ib 1325 ib 7 269
    a. Kev hloov kho qhov kub thiab txias tau teev nyob rau hauv lub rooj: quenching ± 15 ℃, tsis kub tempering ± 20 ℃, kub tempering av 50 ℃.b. Hauv kev ntsuas tensile, cov qauv transverse lossis longitudinal tuaj yeem coj mus kuaj. Nyob rau hauv cov ntaub ntawv ntawm kev tsis pom zoo, tus qauv longitudinal yog siv los ua lub hauv paus rau kev txiav txim.c. Cov hlau uas muaj boron tuaj yeem ua rau normalize ua ntej quenching, thiab qhov normalizing kub yuav tsum tsis txhob siab tshaj nws quenching kub.d. Kev xa khoom raws li cov ntaub ntawv teev tseg los ntawm tus neeg thov. Thaum tus neeg thov tsis tau teev tseg, kev xa khoom tuaj yeem ua raws li ib qho ntawm cov ntaub ntawv.e. Thawj quenching ntawm titanium hlau nrog Ming Meng tuaj yeem hloov tau los ntawm normalizing.f. Isothermal quenching ntawm 280 C ~ 320 C.

    g. Hauv kev ntsuas tensile, yog tias ntsuas tsis tuaj yeem ntsuas, Rp0.2 tuaj yeem ntsuas tsis yog Rel.

     

    Ua siab ntev

    Tso cai sib txawv ntawm sab nraud ntawm cov yeeb nkab steel

    Hom steel yeeb nkab

    Txais Tolerance

    Kub dov steel yeeb nkab

    ± 1% D lossis ± 0.5, qhov twg ntau dua

    Cold drawn steel yeeb nkab

    Av 0.75% D lossis av 0.3, qhov twg ntau dua

     

    Tso cai sib txawv ntawm phab ntsa thickness ntawm kub dov (extended) steel yeeb nkab

    Hom steel yeeb nkab

    D

    S/D

    Txais Tolerance

    Kub dov steel yeeb nkab

    <102

    —

    ± 12.5% ​​S lossis ± 0.4, qhov twg ntau dua

    > 102

    <0.05

    ± 15% S lossis ± 0,4, qhov twg ntau dua

    > 0.05-0.10

    ± 12.5% ​​S lossis ± 0.4, qhov twg ntau dua

    > 0.10

    + 12.5% ​​S

    -10% S

    Thaum tshav kub kub expanded steel yeeb nkab

    Ib

    15% S

    Tso cai sib txawv ntawm phab ntsa thickness ntawm txias drawn (dov) steel yeeb nkab

    • Hom steel yeeb nkab

    S

    Txais Tolerance

    Cold drawing (rolling)

    V

    + 15% S

    Los yog 0.15, qhov twg ntau dua

    -10% S

    > 3—10

    + 12.5% ​​S

    -10% S

    > 10

    土 10% S

    Kev Xeem Xeem

    Tshuaj muaj pes tsawg leeg, ncab, hardness, poob siab, Squash, dabtsi yog khoov, Ultrasonic kuaj, Eddy tam sim no, kuaj pom, leak detection, Galvanized

    Product Detail

    Mechanical/Chemical & Fertilizer Pipes

    GB/T 8162-2008

    ASTM A519-2006 Kev Tswj Xyuas Kev Tswj Xyuas

    TS EN 10210-1-2006

    ASTM A53 / A53M-2012 Kev Ntsuas

    GB 9948-2006

    GB 6479-2013

    GB/T 17396-2009

  • Yav dhau los:
  • Tom ntej:

    • Seamless Steel Tubes Rau Lub Hom Phiaj, Seamless Steel Tubes Rau Cov Khoom Siv Hluav Taws Xob Hauv GB / 8162-2008 Standard. Nyob rau hauv seamless steel raj series, muaj ib yam khoom hu ua Q345B seamless steel raj yog ib tug tsawg alloy series. Nyob rau hauv cov ntaub ntawv uas tsis tshua muaj alloy, cov khoom no yog cov feem ntau. Q345 seamless steel tube yog ib yam khoom siv hlau raj. Q yog qhov tawm los ntawm cov khoom siv no, thiab 345 yog qhov tawm los ntawm cov khoom siv no, uas yog nyob ib ncig ntawm 345. Thiab tus nqi tawm los yuav txo qis nrog qhov nce ntawm cov khoom tuab. Q345A qib, tsis cuam tshuam; Q345B, yog 20 degrees ib txwm kub cuam tshuam; Q345C chav kawm, yog 0 degree cuam tshuam; Q345D, yog -20 degree cuam tshuam; Chav Kawm Q345E, rho tawm 40 degrees. Tus nqi cuam tshuam kuj txawv ntawm qhov sib txawv ntawm qhov kub thiab txias. Q345A, Q345B, Q345C, Q345D, Q345E. Qhov no yog qib ntawm kev sib txawv, uas sawv cev rau, feem ntau cuam tshuam qhov kub thiab txias sib txawv.

    Kev ua qauv

    1. Seamless yeeb nkab rau cov qauv (GB/T8162-2018) yog seamless steel yeeb nkab rau cov qauv dav dav thiab cov qauv siv tshuab. 2. Seamless steel yeeb nkab rau kev thauj mus los ntawm cov kua dej (GB/T8163-2018) yog siv rau kev xa dej, roj, roj thiab lwm yam dej hauv cov yeeb nkab seamless steel. 3. Seamless steel raj rau qis thiab nruab nrab siab boilers (GB3087-2018) yog cov zoo carbon structural steel kub-dov thiab txias-draw (dov) seamless steel hlab, uas yog siv rau manufacturing superheated chav kav, boiling dej kav ntawm ntau yam Cov qauv ntawm cov boilers qis thiab nruab nrab siab thiab cov kav dej superheated thiab cov kav dej arch cib rau locomotive boilers. 4. Seamless steel raj rau kev kub siab boiler (GB5310-2018) yog siv rau kev tsim cov kev kub siab thiab siab tshaj dej siab lub raj boiler cua sov nto nrog zoo carbon steel, alloy steel thiab stainless kub resistant steel seamless steel raj.

    Q345B Seamless steel raj specification daim ntawv

    specification

    specification

    specification

    specification

    14 * 3

    38 * 5.5 hli

    89 * 5

    133 * 18

    14 * 3.5

    42 * 3

    89 * 5.5 hli

    159 * 6

    14 * 4

    42 * 3.5 hli

    89 * 6

    159 * 6.5 hli

    16 * 3

    42 * 4

    89 * 7

    159 * 7

    18 * 2

    42 * 5

    89 * 7.5 hli

    159 * 8

    18 * 3

    42 * 6

    89 * 8

    159 * 9.5 hli

    18 * 4

    42 * 8

    89 * 9

    159 * 10

    18 * 5

    45 * 3

    89 * 10

    159 * 12

    19 * 2

    45 * 4

    89 * 11

    159 * 14

    21 * 4

    45 * 5

    89 * 12

    159 * 16

    22 * 2.5 hli

    45 * 6

    108 * 4.5 hli

    159 * 18

    22 * 3

    45 * 7

    108 * 5

    159 * 20

    22 * 4

    48 * 4

    108 * 6

    159 * 28

    22 * 5

    48 * 4.5 hli

    108 * 7

    168 * 6

    25 * 2.5 hli

    48 * 5

    108 * 8

    168 * 7

    25 * 3

    48 * 6

    108 * 9

    168 * 8

    25 * 4

    48 * 7

    108 * 10

    168 * 9.5 hli

    25 * 5

    48.3 * 12.5

    108 * 12

    168 * 10

    25 * 5.5 hli

    51 * 3

    108 * 14

    168 * 11

    27 * 3.5 hli

    51 * 3.5 hli

    108 * 15

    168 * 12

    27 * 4

    51 * 4

    108 * 16

    168 * 14

    27 * 5

    51 * 5

    108 * 20

    168 * 15

    27 * 5.5 hli

    51 * 6

    114 * 5

    168 * 16

    28 * 2.5 hli

    57 * 4

    114 * 6

    168 * 18

    28 * 3

    57 * 5

    114 * 7

    168 * 20

    28 * 3.5 hli

    57 * 5.5 hli

    114 * 8

    168 * 22

    28 * 4

    57 * 6

    114 * 8.5 hli

    168 * 25

    30 * 2.5 hli

    60 * 4

    114 * 9

    168 * 28

    32 * 2.5 hli

    60 * 4

    114 * 10

    180 * 10

    32 * 3

    60 * 5

    114 * 11

    194 * 10

    32 * 3.5 hli

    60 * 6

    114 * 12

    194 * 12

    32 * 4

    60 * 7

    114 * 13

    194 * 14

    32 * 4.5 hli

    60 * 8

    114 * 14

    194 * 16

    32 * 5

    60 * 9

    114 * 16

    194 * 18

    34 * 3

    60 * 10

    114 * 18

    194 * 20

    34 * 4

    76 * 4.5 hli

    133 * 5

    194 * 26

    34 * 4.5

    76 * 5

    133 * 6

    219 * 6.5 hli

    34 * 5

    76 * 6

    133 * 7

    219 * 7

    34 * 6.5

    76 * 7

    133 * 8

    219 * 8

    38 * 3

    76 * 8

    133 * 10

    219 * 9

    38 * 3.5 hli

    76 * 9

    133 * 12

    219 * 10

    38 * 4

    76 * 10

    133 * 13

    219 * 12

    38 * 4.5 hli

    89 * 4

    133 * 14

    219 * 13

    38 * 5

    89 * 4.5 hli

    133 * 16

    219 * 14

    219 * 16

    273 * 36

    356 * 28

    426 * 12

    219 * 18

    273 * 40

    356 * 36

    426 * 13

    219 * 20

    273 * 42

    377 * 9

    426 * 14

    219 * 22

    273 * 45

    377 * 10

    426 * 17

    219 * 24

    298.5 * 36

    377 * 12

    426 * 20

    219 * 25

    325 * 8

    377 * 14

    426 * 22

    219 * 26

    325 * 9

    377 * 15

    426 * 30

    219 * 28

    325 * 10

    377 * 16

    426 * 36

    219 * 30

    325 * 11

    377 * 18

    426 * 40

    219 * 32

    325 * 12

    377 * 20

    426 * 50

    219 * 35

    325 * 13

    377 * 22

    457 * 9.5 hli

    219 * 38

    325 * 14

    377 * 25

    457 * 14

    273 * 7

    325 * 15

    377 * 32

    457 * 16

    273 * 8

    325 * 16

    377 * 36

    457 * 19

    273 * 9

    325 * 17

    377 * 40

    457 * 24

    273 * 9.5 hli

    325 * 18

    377 * 45

    457 * 65

    273 * 10

    325 * 20

    377 * 50

    508 * 13

    273 * 11

    325 * 22

    406 * 9.5 hli

    508 * 16

    273 * 12

    325 * 23

    406 * 11

    508 * 20

    273 * 13

    325 * 25

    406 * 13

    508 * 22

    273 * 15

    325 * 28

    406 * 17

    558.8 * 14

    273 * 16

    325 * 30

    406 * 22

    530 * 13

    273 * 18

    325 * 32

    406 * 32

    530 * 20

    273 * 20

    325 * 36

    406 * 36

    570 * 12.5 hli

    273 * 22

    325 * 40

    406 * 40

    610 * 13

    273 * 25

    325 * 45

    406 * 55

    610 * 18

    273 * 28

    356 * 9.5 hli

    406.4 * 50

    610 * 78

    273 * 30

    356 * 12

    406.4 * 55

    624 * 14.2 hli

    273 * 32

    356 * 15

    406 * 60

    824 * 16.5 hli

    273 * 35

    356 * 19

    406 * 65

    824 * 20

    Chemical Component

    Qib Steel

    Qib zoo

    Tshuaj muaj pes tsawg leeg

    C

    Si

    Mn

    P

    S

    Nb

    V

    Ti

    Cr

    Ni

    Cu

    Nd

    Mo

    B

    Als”

    Tsis Muaj Ntau

    Tsis tsawg dua

    q345 ua

    A

    0.2

    0.5

    1.7

    0.035 ib

    0.035 ib

    		      

    0.3

    0.5

    0.2

    0.012 ib

    0.1

    ——

    —

    B

    0.035 ib

    0.035 ib

    C

    0.03 ib

    0.03 ib

    0.07 ib

    0.15

    0.2

    0.015 ib

    D

    0.18

    0.03 ib

    0.025 ib

    E

    0.025 ib

    0.02 ib
    A. Ntxiv rau Q345A Thiab Q345B Qib, Cov Hlau yuav tsum muaj tsawg kawg yog ib qho ntawm cov khoom ua kom zoo zoo Al, Nb, V, Thiab Ti. Raws li Cov Kev Xav Tau, Tus Neeg Siv Khoom tuaj yeem ntxiv ib lossis Ntau Cov Khoom Uas Ua Kom Zoo. Tus nqi siab tshaj plaws yuav tsum yog raws li tau teev tseg hauv cov lus. Thaum sib xyaw ua ke, Nb + V + Ti tsis ntau tshaj 0.22% B. Rau Q345, Q390, Q420 Thiab Q46O Qib, Mo + Cr tsis ntau dua 0.30% C. Thaum Cr Thiab Ni ntawm txhua qib yog siv los ua cov khoom seem, cov ntsiab lus ntawm Cr Thiab Ni yuav tsum tsis txhob loj dua 0.30%; Thaum Yuav Tsum Tau Ntxiv, Cov Ntsiab Lus Yuav Tsum Tau Ua Raws Li Cov Lus Qhia Hauv Lub Rooj Los yog txiav txim los ntawm tus neeg muab khoom thiab tus neeg yuav khoom los ntawm kev sab laj.D. Yog tias tus neeg muab khoom siv tuaj yeem ua kom ntseeg tau tias cov ntsiab lus Nitrogen ua tau raws li qhov yuav tsum tau muaj hauv cov lus, Kev Ntsuam Xyuas Nitrogen Cov ntsiab lus yuav tsis ua. Yog tias Al, Nb, V, Ti thiab lwm yam khoom siv hlau nrog Nitrogen Fixation raug ntxiv rau cov hlau, cov ntsiab lus Nitrogen tsis txwv. Cov ntsiab lus Nitrogen Fixation yuav tsum tau qhia hauv daim ntawv pov thawj zoo. E. Thaum Siv Txhuas Txhuas Txhuas Txhuas Txhuas Txhuas Alt≥0020%.

     

    Qib

    Carbon Equivalent CEV (Mass Fraction) /%

    Nominal Phab Ntsa Thickness S≤ 16mm

    Nominal Phab Ntsa Thickness S2> 16 mm~30 mmm

    Nominal Phab Ntsa Thickness S> 30mm

    Kub Rolled los yog Normalized Normalized

    Quenching+Tempering

    Kub Rolled los yog Normalized

    Quenching+Tempering

    Kub Rolled los yog Normalized

    Quenching+Tempering

    q345 ua

    <0.45

    —

    <0.47

    —

    <0.48

    Ib

     

    Mechanical Property

    Mechanical Properties Of High-Quality Carbon Steel Structural Steel Thiab Low-Alloy High-Strength Structural Steel Pipes

    Qib

    Qib zoo

    Yield zog

    Lower Yield Strength

    Elongation Tom qab tawg

    Impact Test
     

    Nominal Phab Ntsa Thickness

    Kub

    Absorb zog

    <16 hli

    > 16 mmm~

    〉30 mmm
     

    30 mmm

    Tsis tsawg dua

    Tsis tsawg dua

    q345 ua

    A

    470-630 : kuv

    345

    325

    295

    20

    —

    Ib

    B

    4 ~ 20

    34

    C

    21

    0

    D

    -20

    E

    -40

    27

     

    Kev Xeem Xeem

    Tshuaj muaj pes tsawg leeg: Stretch, Hardness, Shock, Squash, dabtsi yog khoov, Ultrasonic Test, Eddy tam sim no, kuaj pom, Leak Detection, Galvanized

    Q345B拼图(1)

    Sau koj cov lus ntawm no thiab xa tuaj rau peb
    Ntaus nkag mus tshawb lossis ESC kom kaw