Mapaipi Aakulu Akuluakulu Owotcherera Zitsulo Milu ya Tubular
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.
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.