Zitsanzo zaulere za China ASTM A53/BS1387 Chitoliro Chachitsulo Choviikidwa Choviikidwa Chotentha
Mwachidule
Membala aliyense payekhapayekha kuchokera ku gulu lathu lalikulu la ogwira ntchito amayamikira zomwe makasitomala amafuna komanso kulumikizana ndi gulu la ASTM A53/BS1387 Chitoliro Chachitsulo Choviikidwa Chotentha Chothira. Tikukhulupirira titha kukhala ogulitsa odalirika ku China. Tikuyembekezera mgwirizano wanu .Ndi zaka zambiri za 9 ndi gulu la akatswiri, tatumiza katundu wathu ku mayiko ndi zigawo zambiri padziko lonse lapansi. Tikulandira makasitomala, mabungwe ochita bizinesi ndi abwenzi ochokera kumadera onse adziko lapansi kuti atilumikizane ndikupempha mgwirizano kuti tipindule.
Hot-dip galvanizing ili ndi ubwino wa zokutira yunifolomu, kumamatira mwamphamvu komanso moyo wautali wautumiki. Zovuta zakuthupi ndi zamankhwala zimachitika pakati pa matrix achitsulo ndi chitsulo chosungunula kuti apange wosanjikiza wosawononga zinki-chitsulo aloyi wokhala ndi chophatikizika. Chigawo cha alloy chimaphatikizidwa ndi chosanjikiza choyera cha zinc ndi matrix achitsulo chachitsulo. Choncho, kukana kwake kwa dzimbiri ndi kolimba.
Tiyenera kuzindikira kuti zaka za m'ma 1960 ndi 1970, mayiko otukuka padziko lapansi anayamba kupanga mitundu yatsopano ya mapaipi ndipo pang'onopang'ono analetsa mipope ya malata. Unduna ndi makomiti anayi kuphatikiza unduna wa zomangamanga ku China adaperekanso chikalata chofotokoza kuti mapaipi a malata aletsedwa kuyambira 2000 kupita m'tsogolo. Mipope ya malata sagwiritsidwa ntchito kawirikawiri pomanga mapaipi a madzi ozizira m’madera omangidwa kumene, ndipo mapaipi a malata amagwiritsidwa ntchito popanga mapaipi a madzi otentha m’madera ena.
Kugwiritsa ntchito
Amagwiritsidwa ntchito makamaka pazigawo zamphamvu ndi zokakamiza, komanso pazolinga zonse za nthunzi, madzi, gasi ndi mapaipi amlengalenga.
Main Grade
G.A, GR.B
Chigawo cha Chemical
| Gulu | Gawo % ≤ | ||||||||
| C | Mn | P | S | KuA | NdiA | CrA | MoA | VA | |
| Mtundu wa S (chitoliro chopanda msoko) | |||||||||
| G.A | 0.25B | 0.95 | 0.05 | 0.045 | 0.40 | 0.40 | 0.40 | 0.15 | 0.08 |
| GR.B | 0.30C | 1.20 | 0.05 | 0.045 | 0.40 | 0.40 | 0.40 | 0.15 | 0.08 |
| E mtundu (Resistance welded chitoliro) | |||||||||
| G.A | 0.25B | 0.95 | 0.05 | 0.045 | 0.40 | 0.40 | 0.40 | 0.15 | 0.08 |
| GR.B | 0.30C | 1.20 | 0.05 | 0.045 | 0.40 | 0.40 | 0.40 | 0.15 | 0.08 |
| F mtundu (Chitoliro Chowotcherera cha Ng'anjo) | |||||||||
| A | 0.30B | 1.20 | 0.05 | 0.045 | 0.40 | 0.40 | 0.40 | 0.15 | 0.08 |
A Chiwerengero cha zinthu zisanu izi sichiyenera kupitirira 1.00%.
B Pakuchepa kulikonse kwa 0.01% muzambiri za kaboni, kuchuluka kwa manganese kumaloledwa kuwonjezeka ndi 0.06%, koma kuchuluka kwake sikungapitirire 1.35%.
C Kuchepa kulikonse kwa 0.01% muzambiri za kaboni kumapangitsa kuti manganese achuluke ndi 0.06%, koma kuchuluka kwake kuyenera kusapitilira 1.65%.
Mechanical Property
| chinthu | G.A | GR.B |
| kulimba kwamphamvu, ≥, psi [MPa] Mphamvu Zokolola, ≥, psi [MPa] Gauge 2 in. kapena 50mm elongation | 48 000 [330]30 000 [205]A,B | 60 000 [415]35 000 [240]A,B |
A Kutalikitsa kocheperako kwa kutalika kwa gauge 2in. (50mm) zidzatsimikiziridwa ndi chilinganizo zotsatirazi:
e=625000(1940)A0.2/U0.9
e = kutalika kochepa kwa geji 2in. (50mm), peresenti yozungulira mpaka 0.5% yapafupi;
A = Kuwerengedwa molingana ndi kukula kwakunja kwa chubu chodziwika bwino kapena m'lifupi mwadzina lachitsanzo chokhazikika komanso makulidwe ake a khoma, ndikuzunguliridwa kudera lapafupi kwambiri lachitsanzo chokhazikika cha 0.01 in.2 (1 mm2), ndipo Imafananizidwa ndi 0.75in.2 (500mm2), iliyonse yomwe ili yaying'ono.
U = mphamvu yocheperako yokhazikika, psi (MPa).
B Pamitundu yosiyanasiyana yamitundu yosiyanasiyana yamayeso oyeserera komanso mphamvu zocheperako zokhazikika, kutalika kocheperako kumawonetsedwa mu Table X4.1 kapena Table X4.2, malingana ndi kagwiritsidwe ntchito kake.
Chofunikira Choyesa
Kuyesa kwamphamvu, kuyesa kupindika, kuyesa kwa hydrostatic, kuyesa kwamagetsi osawononga ma welds.
Kupereka Mphamvu
Kuthekera Kopereka: Matani 2000 pamwezi Pagulu lililonse la ASTM A53/A53M-2012 Pipe yachitsulo
Kupaka
M'mitolo Ndipo M'bokosi Lamphamvu Lamatabwa
Kutumiza
7-14 masiku ngati katundu, 30-45 masiku kubala
Malipiro
30% depsoit, 70% L/C kapena B/L buku kapena 100% L/C pakuona
Tsatanetsatane wa Zamalonda
Boiler Tube
GB/T 8162-2008
ASTM A519-2006
Chithunzi cha EN10210-1-2006
ASTM A53/A53M-2012
GB9948-2006
GB6479-2013
