Mapaipi Aakulu Akuluakulu Owotcherera Zitsulo Milu ya Tubular

Kufotokozera Kwachidule:

Ndife okondwa kuyambitsa milu yathu yachitsulo yachitsulo, yopangidwa kuti ikhale yothandiza kwambiri pazinthu zosiyanasiyana, makamaka ma cofferdam.Milu iyi imakhala ndi mapangidwe opindika kapena ozungulira kuti akhale ndi mphamvu zosayerekezeka komanso zolimba, zotsekera bwino ndikuletsa kulowa kwa madzi, nthaka ndi mchenga.


Tsatanetsatane wa Zamalonda

Zolemba Zamalonda

Milu yazitsulo zachitsuloamapangidwa pogwiritsa ntchito zipangizo zapamwamba kwambiri komanso zamakono zamakono, zomwe zimapangitsa kuti zikhale zodalirika pa ntchito iliyonse yomanga.Milu iyi imagwiritsidwa ntchito kwambiri m'ma cofferdams ndipo mapangidwe awo amphamvu amatsimikizira chitetezo ndi bata lomwe limafunikira pamaziko ndi ntchito zina za zomangamanga.

Standard  

Kalasi yachitsulo

Zamankhwala (%) Tensile Property Charpy

(V notch)

Mayeso a Impact

c Mn p s Si Zina Zokolola Mphamvu

(Mpa)

Kulimba kwamakokedwe

(Mpa)

(L0 = 5.65 √ S0 (mphindi Wotambasula) (%)
max max max max max min max min max D ≤ 168.33mm D > 168.3mm
 

 

 

GB/T3091 -2008

Q215A ≤ 0.15 0.25 < 1.20 0.045 0.050 0.35  

 

Kuwonjezera Nb\V\Ti molingana ndi GB/T1591-94

215   335   15 > 31  
Q215B ≤ 0.15 0.25-0.55 0.045 0.045 0.035 215 335 15 > 31
Q235A ≤ 0.22 0.30 < 0.65 0.045 0.050 0.035 235 375 15 > 26
Q235B ≤ 0.20 0.30 ≤ 1.80 0.045 0.045 0.035 235 375 15 > 26
Q295A 0.16 0.80-1.50 0.045 0.045 0.55 295 390 13 > 23
Q295B 0.16 0.80-1.50 0.045 0.040 0.55 295 390 13 > 23
Q345A 0.20 1.00-1.60 0.045 0.045 0.55 345 510 13 > 21
Q345B 0.20 1.00-1.60 0.045 0.040 0.55 345 510 13 > 21
 

 

 

 

GB/

T9711-

2011

(PSL1)

L175 0.21 0.60 0.030 0.030    

 

 

Posankha kuwonjezera chimodzi mwazinthu za Nb\V\Ti kapena kuphatikiza kulikonse

175   310   27  

Chimodzi kapena ziwiri za kulimba indexof

mphamvu ya mphamvu ndi kumeta ubweya angasankhidwe.Za

L555, onani muyezo.

L210 0.22 0.90 0.030 0.030 210 335 25
L245 0.26 1.20 0.030 0.030 245 415 21
L290 0.26 1.30 0.030 0.030 290 415 21
L320 0.26 1.40 0.030 0.030 320 435 20
L360 0.26 1.40 0.030 0.030 360 460 19
L390 0.26 1.40 0.030 0.030 390 390 18
L415 0.26 1.40 0.030 0.030 415 520 17
L450 0.26 1.45 0.030 0.030 450 535 17
L485 0.26 1.65 0.030 0.030 485 570 16
 

 

 

 

API 5L (PSL 1)

A25 0.21 0.60 0.030 0.030    

Kwa kalasi B chitsulo,

Nb+V ≤ 0.03%;

kwa zitsulo ≥ kalasi B, kusankha kuwonjezera Nb kapena V kapena awo

kuphatikiza, ndi Nb+V+Ti ≤ 0.15%

172   310    

(L0 = 50.8mm) kukhala

kuwerengeredwa molingana ndi formula iyi:

e=1944·A0 .2/U0 .0

A: Dera lachitsanzo mu mm2 U: Mphamvu zocheperako zotchulidwa mu Mpa

 

Palibe kapena ayi

kapena onse awiri

zotsatira zake

mphamvu ndi

kumeta ubweya

malo amafunikira ngati muyeso wolimba.

A 0.22 0.90 0.030 0.030   207 331
B 0.26 1.20 0.030 0.030   241 414
x42 0.26 1.30 0.030 0.030   290 414
x46 0.26 1.40 0.030 0.030   317 434
X52 0.26 1.40 0.030 0.030   359 455
x56 0.26 1.40 0.030 0.030   386 490
X60 0.26 1.40 0.030 0.030   414 517
x65 0.26 1.45 0.030 0.030   448 531
X70 0.26 1.65 0.030 0.030   483 565

Zathulalikulu m'mimba mwake welded chitolirosndizo msana wa milu yazitsulo zazitsulozi, zomwe zimawonjezera kudalirika kwawo ndi ntchito.Kudzera mu njira zowotcherera mosamalitsa komanso zowongolera zabwino, timaonetsetsa kuti mulu uliwonse ukukwaniritsa miyezo yapamwamba kwambiri yamakampani.Mapaipiwa amapereka kusinthasintha kwapadera komanso kukhazikika, kulola milu yazitsulo zachitsulo kupirira mikhalidwe yovuta komanso malo ovuta.

Monga makampani opanga makampani, Cangzhou Spiral Steel Pipes Group Co., Ltd. ili ndi malo apamwamba kwambiri omwe ali ndi malo opitilira 350,000 masikweya mita.Ndi mtengo wamtengo wapatali wofikira 680 miliyoni wa yuan, timayika ndalama paukadaulo ndi zida zotsogola kuti tiwonetsetse kupanga kwapamwamba kwambiri.Kuphatikiza apo, ogwira ntchito athu odzipereka omwe ali ndi antchito 680 amawonetsetsa kuti chinthu chilichonse chimayang'aniridwa mosamalitsa chisanafike m'manja mwa makasitomala athu ofunikira.

Chithunzi cha SSAW

fakitale yathu linanena bungwe pachaka matani 400,000 wa mipope zitsulo ozungulira ndi mtengo linanena bungwe yuan biliyoni 1.8.Chochitika ichi chikuwonetsa kudzipereka kwathu popereka ntchito zabwino kwambiri ndikukwaniritsa zosowa za makasitomala athu ofunikira kwanuko komanso padziko lonse lapansi.

Milu yazitsulo zachitsulokuphatikizika ndi mipope yathu yayikulu yowotcherera m'mimba mwake imapereka kusinthasintha kwakukulu, kuwapanga kukhala oyenera ntchito zosiyanasiyana.Kuphatikiza pa ma cofferdams, milu yathu imagwiritsidwa ntchito kwambiri pomanga mlatho, zomangamanga zamadoko ndi ntchito zina zam'madzi.Mapangidwe apadera opindika kapena ozungulira a milu iyi amaonetsetsa kuti madzi abwino komanso kusungidwa kwa dothi kumapangitsa kuti pakhale mawonekedwe amphamvu.

Kudzipereka kwa kampani yathu pazabwino, ukatswiri komanso kukhutitsidwa kwamakasitomala kumatipangitsa kupitiliza kukonza njira zathu zopangira ndikupanga njira zatsopano.Timatsatira mfundo zoyendetsera bwino kwambiri kuonetsetsa kuti katundu wathu ndi wapamwamba kwambiri komanso amakwaniritsa kapena kupitilira zomwe mukuyembekezera.

Powombetsa mkota,zitsulo tubular miluakusintha ntchito yomanga ndi mphamvu ndi kulimba kwa chitoliro chathu chachikulu chowotcherera.Ndi kuthekera kwawo kupirira zovuta komanso kugwiritsa ntchito kwawo mwapadera m'ma cofferdams, milu iyi imapereka chitetezo ndi chithandizo chosayerekezeka.Gwirizanani ndi Cangzhou Spiral Steel Pipes Group Co., Ltd. kuti mupeze zinthu zapamwamba kwambiri zomwe zimakulitsa mapulojekiti anu ndikupereka mayankho okhalitsa.


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