Lumikizanani nafe kuti mudziwe zambiri za mapaipi achitsulo ndi kukula kwake.
Mapaipi a Chitsulo a ASTM A252 Gr.1/2/3 - Zomangamanga ndi Zapamadzi
| Muyezo wa Zinthu Zofunika | ASTM A252 Giredi 1, Giredi 2, Giredi 3 |
| Mphamvu Yopereka | ≥207 MPa |
| Miyeso / Kukula | Chidutswa chakunja: 219 mm – 3000 mm (chosinthika) |
| Kukhuthala kwa Khoma | 6 mm – 40 mm (yosinthika) |
| Utali | Katundu wa mamita 6 ndi 12; Kutalika Kosinthidwa Kulipo |
| Mtundu wa Chitoliro / Kuwotcherera | SSAW (Spiral Submerged Arc Welded) / LSAW (Longitudinal SAW / EFW) |
| Kulekerera kwa Miyeso | Zimagwirizana ndi ASTM A252 |
| Chitsimikizo Chaubwino | Lipoti Lowunikira la ISO 9001; SGS / BV la Chipani Chachitatu Likupezeka |
| Kumaliza Pamwamba | Chophimba Chakuda, Choviikidwa ndi Magetsi, Chopaka Utoto, Kapena Chopangidwa Mwamakonda |
| Mapulogalamu | Kumanga maziko, milatho, madoko, mafamu amphepo a m'nyanja ndi m'mphepete mwa nyanja, mapulojekiti akuluakulu a zomangamanga |
Deta Yaukadaulo
Mapaipi a Chitsulo a ASTM A252Kapangidwe ka Mankhwala
| Chinthu | Zomwe zili mkati (%) |
| Kaboni (C) | 0.26 payokha |
| Manganese (Mn) | 0.85 – 1.60 |
| Phosphorus (P) | 0.04 payokha |
| Sulfure (S) | 0.05 payokha |
| Silikoni (Si) | 0.10 – 0.35 |
| Mkuwa (Cu) | 0.20 – 0.30 (ngati mukufuna kupewa dzimbiri) |
Mapaipi a Chitsulo a ASTM A252Katundu wa Makina
| Katundu | Chofunikira / Mtengo |
| Mphamvu Yopereka (Mphindi) | 207 MPa (30 ksi) |
| Kulimba kwamakokedwe | 345 – 455 MPa (50-66 ksi) |
| Kutalika (mu 200 mm) | ≥20% |
| Mayeso a Impact (Charpy V-Notch) | Sikofunikira pa kukula konse; mwina pa ntchito zotentha pang'ono kapena za m'mphepete mwa nyanja |
| Kuuma | Brinell wamba: 110–180 HB |
| Katundu | Giredi 1 | Giredi 2 | Giredi 3 |
| Mphamvu Yochepa Yopereka | 30,000 psi (207 MPa) | 35,000 psi (241 MPa) | 45,000 psi (310 MPa) |
| Mphamvu Yocheperako Yokoka | 50,000 psi (345 MPa) | 60,000 psi (415 MPa) | 66,000 psi (455 MPa) |
| Kutalika Kochepa (gauge ya mainchesi awiri) | 18% | 14% | 20% |
Mapaipi a ASTM A252Kukula
| Mafotokozedwe Odziwika Ochokera Kunja (Otchuka Kwambiri Giredi 3) | |||||
| NPS | OD (mm) | Kukhuthala kwa Khoma | Kulemera (kg/m2) | Ndandanda Yachizolowezi | Kugwiritsa Ntchito Koyamba |
| 16" | 406.4 | 0.375" (9.52mm) | 92.5 | Matenda opatsirana pogonana | Malo ofikira madoko, zomangamanga zonse |
| 16" | 406.4 | 0.500" (12.70mm) | 121.8 | 40 | Maziko a mphepo ya m'mphepete mwa nyanja, zipilala za mlatho |
| 18" | 457 | 0.500" (12.70mm) | 137.4 | 40 | Nyumba zolemera zamafakitale, maziko akuya |
| 24" | 609.6 | 0.500" (12.70mm) | 183.2 | 40 | Milu yayikulu, nyumba zam'madzi |
| 24" | 609.6 | 0.750" (19.05mm) | 271.8 | XS | Ntchito zonyamula katundu wolemera kwambiri, kuyendetsa miyala |
| 30" | 762 | 0.625" (15.88mm) | 287.5 | 40 | Mapulatifomu akunja, maziko a LNG terminal |
| 36" | 914.4 | 0.750" (19.05mm) | 392.3 | 40 | Mapulojekiti akuluakulu, milatho yodutsa nyanja |
| Njira Yopangira vs. Kukula kwa Mphamvu | |||||
| Njira | OD Yokwera Kwambiri (mm) | Kulemera Kwambiri (mm) | Kutalika kwa Utali (m) | Kugwiritsa Ntchito Ndalama Moyenera | Zabwino Kwambiri |
| SSAW (Yozungulira) | 3200 | 30 | 6-18 | Wapamwamba kwambiri | M'mimba mwake waukulu, makulidwe apakati a khoma (16"-48") |
| LSAW (JCOE) | 1422 | 50 | 6-15 | Pamwamba | Khoma lokhuthala kwambiri (≥1.0"), lofunika mphamvu zambiri |
| ERW | 660 | 25 | 6-12 | Pakatikati | Yaing'ono mpaka yapakati, makulidwe ofanana a khoma |
| Wopanda msoko | 1016 | 100 | 6-12 | Chotsika kwambiri | Ntchito zofunika kwambiri, malo owononga |
Dinani batani la kumanja
1. Maziko a Khoma la Pansi:Kumanga pansi pa nthaka kwa nyumba zazitali, mafakitale, nyumba zosungiramo katundu, nyumba zamalonda ndi nyumba zokhalamo. Maziko a milu (mitundu yonse ya zomangamanga).
2. Maziko a Milu ya Mlatho:Maziko okhala ndi milatho yamisewu ikuluikulu, milatho ya sitima, ndi misewu yodutsa m'matauni. Maziko okhala ndi mipanda ya mitsinje, nyanja ndi milatho ya nyanja.
3. Kumanga Madoko:Maziko onyamula katundu wa malo oimikapo doko, malo oimikapo sitima ndi malo oimikapo doko. Zipangizo zolemera ndi ntchito zotumizira katundu wa padoko.
4. Mapulojekiti a Mphamvu ya Mphepo ndi Uinjiniya wa Zam'madzi ku Offshore:Maziko a ma turbine amphepo akunyanja. Kapangidwe kothandizira mapulatifomu akunyanja, mapaipi akunyanja, mapaipi akunyanja, makoma a nyanja ndi nthawi yomweyo M'nyumba zokhala anthu Kukana mafunde, kukana mafunde, ndi dzimbiri la m'nyanja.
5. Uinjiniya Waukulu Wanyumba:Maziko olemera okhala ndi milu yayikulu ya mainchesi kuti agwiritsidwe ntchito kwambiri pa ntchito zauinjiniya (madamu, masiteshoni a sitima zapansi panthaka, ndi ngalande). Thandizo la makina amafakitale ndi katundu womangidwa.
1) Ofesi ya Nthambi - chithandizo cha Chisipanishi, chithandizo cha msonkho, ndi zina zotero.
2) Matani opitilira 5,000 a katundu alipo, okhala ndi makulidwe osiyanasiyana
3) Kuyang'aniridwa ndi mabungwe odalirika monga CCIC, SGS, BV, ndi TUV, ndi ma CD oyenera kuyenda panyanja
Phukusi 1:Zingwe zachitsulo kuti zikhale zosavuta kuzigwira. Mabokosi amatabwa kapena zinthu zina zimayikidwa pakati pa milu kuti zisamasunthe ziwalo panthawi yotumiza. Kukonza pamwamba (ngati mukufuna): Kupaka utoto wakuda, mafuta oletsa dzimbiri, filimu ya pulasitiki. Milu ya galvanized ikhozanso kukulungidwa mu filimu ya pulasitiki yoteteza kwakanthawi kuti isakanda pamwamba. Pali ma CD okonzedwa mwamakonda.
2 Chidziwitso Chotumizira:Kutalika Kokhazikika Komwe Kulipo: 6m, 12m. Kutalika: kokhazikika komanso kopangidwa mwamakonda. Kumabwera ndi Sitima Yapamadzi ndi Kugwiritsa Ntchito Mumsewu. Kuyenera kugwiritsidwa ntchito pa sitima yapamadzi, sitima kapena msewu, komanso ndi kolimba mokwanira mukamagwiritsa ntchito mumsewu. Nthawi yotumizira ndi masiku 15-30 mutalandira ndalama, kutengera kuchuluka ndi zofunikira. Kumagwiritsidwa ntchito kutumiza kunja kwa dziko lonse lapansi, ndi zikalata zonse (Satifiketi Yoyesera, Mndandanda Wolongedza, Bilu Yonyamula).
3 Njira zodzitetezera:Musagwiritse ntchito zingwe kapena zingwe zopanda ma pad kuti zigwirizane mwachindunji ndi pamwamba pa chitoliro zomwe zingayambitse kusintha kwa chitoliro. Sungani pamalo ozizira, ouma komanso opumira bwino. Kuti mupewe dzimbiri musanayike. Katundu wolemera kwambiri komanso wolemera kwambiri ayenera kutsatira malamulo am'deralo otumizira katundu.
Q1: Kodi ndi chiyaniMulu wa chitoliro chachitsulo cha ASTM A252?
Ndi chitoliro chachitsulo chomwe chimagwiritsidwa ntchito pobowola, maziko, milatho, malo osungiramo zinthu, ndi malo omanga.
Q2: Kodi magiredi omwe alipo ndi ati?
Giredi 1, 2, ndi 3 - Gr.1 imagwiritsidwa ntchito ponyamula zinthu mopepuka, Gr.2 imagwiritsidwa ntchito pomanga nyumba zonse, Gr.3 imagwiritsidwa ntchito kwambiri pouma.
Q3: Kodi muli ndi kukula kotani?
Ma diameter: 4"–24" (114–610mm)
Kukhuthala kwa khoma: 5–25mm
Kutalika: 6–12m kapena malinga ndi zomwe mukufuna
Q4: Kodi milu iyi imapakidwa utoto?
Inde - Yoviikidwa ndi Galvanized, Yopakidwa Epoxy kapena Yopakidwa utoto kuti iteteze dzimbiri.
Q5: Ndi mtundu wanji wa satifiketi womwe umaperekedwa?
Milu yonse kuphatikizapo kuyang'aniridwa ndi MTC ya chipani chachitatu ikupezeka.
Q6: Kodi milu imatumizidwa bwanji?
Zomangidwa ndi zingwe zachitsulo
Kutumiza katundu wambiri kapena mapaleti amatabwa.
Ndi zipewa zomaliza komanso mankhwala oletsa dzimbiri
Q7: Kodi ndingapeze kukula koyenera?
Inde, tikhoza kukupatsani ma diameter, kutalika ndi ma grade apadera a polojekiti yanu.
Q8: Kodi mungasankhe bwanji giredi yoyenera?
Kutengera mphamvu ya katundu, momwe nthaka ilili komanso momwe imagwiritsidwira ntchito pomanga. Thandizo kuchokera kwa mainjiniya.
Q9: Kodi nthawi yotumizira nthawi zambiri imakhala yotani?
Masiku 15-30, kutengera kuchuluka ndi kusintha kwa zinthu.
Tsatanetsatane Wolumikizirana
Adilesi
Malo oyendetsera chitukuko cha Kangsheng,
Chigawo cha Wuqing, mzinda wa Tianjin, China.
Maola
Lolemba-Lamlungu: Utumiki wa maola 24











