Mapaipi achitsulo/Machubu piling/Zowonjezera
01
Mapaipi Odzaza
Zoyambitsa Zamalonda
Zofunika:
Mapaipi ophatikizira amagawidwa kutengera zomwe amapangidwira, zomwe zingaphatikizepo chitsulo cha carbon, alloy steel, kapena zinthu zina. Miyezo yeniyeni yazinthu idzadalira ntchito yomwe ikufunidwa ndi malo omwe chitoliro choponyera chidzagwiritsidwa ntchito.
Miyezo Yopanga:
Njira yopangira milu ya chitoliro ingafunike kutsata miyezo yeniyeni kuti zitsimikizire mtundu, kudalirika ndi ntchito ya chitoliro. Miyezo iyi itha kupangidwa ndi mabungwe monga American Society for Testing and Materials (ASTM), American Petroleum Institute (API), kapena mabungwe ena oyenerera mdziko kapena apadziko lonse lapansi.
Miyezo Yopanga:
Kumangirira mapaipi angafunike kuti akwaniritse miyezo ina ya kapangidwe kake kuti atsimikizire kukhulupirika kwawo komanso kunyamula katundu. Miyezo iyi ikhoza kupangidwa ndi mabungwe opanga zomangamanga ndi zomangamanga kapena mabungwe owongolera boma.
Miyezo yopangira:
Kupanga kwa Submerged-Arc Welded Steel Pipes kungatsatire milingo yeniyeni yokhazikitsidwa ndi mabungwe monga American Petroleum Institute (API), American Society for Testing and Materials (ASTM), kapena mabungwe ena apadziko lonse kapena apadziko lonse lapansi motere: API 5L, API 5CT, ASTM 53, EN10217, DIN 2458, IS 3589, GB/T3091, GB/T9711, EN10217, EN10219
Kagwiritsidwe Ntchito:
Mapaipi ophatikizika amatha kugawidwa molingana ndi momwe angagwiritsire ntchito, monga kuyika mulu wa m'madzi, kuyika maziko, kapena mitundu ina ya dothi kapena zachilengedwe. Ndikofunikira kuyang'ana miyeso yeniyeni ndi magulu okhudzana ndi mtundu wa chitoliro cha mulu wofunikira pa ntchito inayake. Ngati muli ndi zofunikira kapena magulu, chonde omasuka kupereka zambiri kuti ndikupatseni zambiri zomwe mukufuna.
Njira:
SSAW - Spiral Submerged arc welded
LSAW – UO(UOE),RB(RBE),JCO(JCOE)
DSAW - Arc Yolowetsedwa Pawiri yowotcherera
Makulidwe:
M'mimba mwake: 355.6mm - 1626mm
Makulidwe a khoma: 8-50mm
Utali: mpaka 12m
Gulu la Zitsulo:
API 5L: GR B, X42,X46, X56, X60,X65,X70
ASTM A53: GR A, GR B, GR C
EN: S275, S275JR, S355JRH, S355J2H
GB: Q195, Q215, Q235, Q345, L175, L210, L245, L320, L360- L555
Pamwamba: zokutira za Fusion bond Epoxy, Coal Tar Epoxy, 3PE, Zovala Zowonongeka, Zopaka Bitumen, Zopaka Mafuta Akuda monga momwe kasitomala amafunira.
Mayeso: Chemical Component Analysis, Mechanical Properties (Ultimate tensile mphamvu, Zokolola mphamvu, Elongation), Technical Properties (Flattening Test, Bending Test, Blow Test, Impact Test), Kuyendera Kukula Kwakunja, Hydrostatic Test, X-ray Test.
Satifiketi Yoyeserera ya Mill: EN 10204/3.1B
Zoyenera Kugwiritsidwira Ntchito: Mapaipi owotcherera aatali amathanso kugawidwa malinga ndi momwe angagwiritsire ntchito, monga mapaipi amafuta ndi gasi, kamangidwe kake, kapena kugwiritsidwa ntchito m'mafakitale. Onetsetsani kuti mukunena za milingo ndi magawo omwe amagwirizana ndi zomwe mukufuna, chifukwa zitha kusiyanasiyana kutengera mafakitale ndi dera.
API 5L Line Pipe
API 5L PSL1/PSL2 GR B , X42, X46, X52, X60, X65, X70
ZINTHU ZOCHITIKA NDI ZINTHU ZOPHUNZITSIRA ZINTHU ZOPHUNZITSIDWA
| NTCHITO YOPHUNZITSIRA | Kupeza mwayi, min. psi (MPa) | Mphamvu zolimba, min. psi (MPa) | Elongation mu 2 in., min. % |
| GR B | 245 | 415 |  |
| X42 | 290 | 415 | |
| x46 | 320 | 435 | |
| X52 | 360 | 460 | |
| x56 | 390 | 490 | |
| X60 | 415 | 520 | |
| x65 | 450 | 535 | |
| X70 | 485 | 570 |
| NTCHITO YOPHUNZITSIRA | % ndi misa, Maximum | ||||
| C | Ndipo | Mn | P | S | |
| GR B | 0.26 | 0.40 | 1.20 | 0.030 | 0.030 |
| X42 | 0.26 | 0.40 | 1.30 | 0.030 | 0.030 |
| x46 | 0.26 | 0.40 | 1.40 | 0.030 | 0.030 |
| X52 | 0.26 | 0.40 | 1.40 | 0.030 | 0.030 |
| x56 | 0.26 | 0.40 | 1.40 | 0.030 | 0.030 |
| X60 | 0.26 | 0.40 | 1.40 | 0.030 | 0.030 |
| x65 | 0.26 | 0.40 | 1.45 | 0.030 | 0.030 |
| X70 | 0.26 | 0.40 | 1.65 | 0.030 | 0.030 |
MIPAPA YACHITSIRI MONGA ASTM A53 GR. B
ZINTHU ZOCHITIKA NDI ZINTHU ZOPHUNZITSIRA ZINTHU ZOPHUNZITSIDWA
| NTCHITO YOPHUNZITSIRA | Composition Max,% | ||||||||
| C | Mn | P | S | Ndi | Mu | Cr | Mo | MU | |
| GR B | 0.30 | 1.20 | 0.05 | 0.05 | 0.40 | 0.40 | 0.40 | 0.15 | 0.08 |
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