ASTM A501 Giredi Bndi chitoliro chachitsulo cha kaboni chopangidwa ndi chitsulo chofewa komanso chopanda msoko chokhala ndi mphamvu yocheperako ya 448 MPa (65,000 psi) yogwiritsidwa ntchito m'njira zosiyanasiyana.
ASTM A501Ndi yopangira ndi kugwiritsa ntchito machubu achitsulo cha kaboni chopangidwa ndi moto komanso chopanda msoko kuti chigwiritsidwe ntchito m'mapangidwe ake.
Machubu achitsulo awa akhoza kukhala akuda (osaphimbidwa) kapena oviikidwa ndi galvanized yotentha, yomwe yomalizayi yawonjezera kukana dzimbiri kudzera mu njira yopangira galvanization, zomwe zimapangitsa kuti ikhale yoyenera kumadera osiyanasiyana.
Mapaipi achitsulo awa amagwiritsidwa ntchito kwambiri pa milatho, nyumba, ndi ntchito zina zambiri zomangamanga.
ASTM A501 imagawa chitoliro chachitsulo m'magulu atatu,giredi A, giredi B, ndi giredi C.
Giredi B ndiyo yomwe imagwiritsidwa ntchito kwambiri pa magiredi atatuwa chifukwa imapereka zinthu zoyenera kugwiritsidwa ntchito m'njira zosiyanasiyana.
Chitsulocho chiyenera kupangidwa ndinjira yopangira chitsulo cha mpweya woyambira kapena wamagetsi-wachitsulo-chowuma.
Chitsulo chingapangidwe ngati zingwe kapena ngati chingwe chopangidwa ndi zingwe.
Pamene zitsulo zamitundu yosiyanasiyana zapangidwa motsatizana, wopanga zitsulo ayenera kuzindikira zinthu zomwe zasintha ndikuzichotsa pogwiritsa ntchito njira yokhazikika yomwe imasiyanitsa mitunduyo bwino.
Chitoliro cha chubu chiyenera kupangidwa ndi imodzi mwa njira zotsatirazi:wopanda msoko; kuwotcherera ndi ng'anjo (kuwotcherera kosalekeza); kuwotcherera ndi magetsi (ERW) kapena kuwotcherera ndi arc pansi pa madzi (SAW)kutsatiridwa ndi kutenthetsanso mbali yonse ya mtanda ndi kupanga kutentha mwa kuchepetsa kapena kupanga mawonekedwe, kapena zonse ziwiri.
Njira yowotcherera ya SAW imagawidwa m'magulu awiri:LSAW(SAWL) ndi SSAW (HSAW).
Kupangidwa kwa mawonekedwe komaliza kuyenera kupangidwa ndi njira yotentha yopangira.
Kudzakhala kololedwa kuwonjezera mankhwala otenthetsera kutentha kwa mapaipi okhala ndi makulidwe a khoma opitilira 13mm [1/2 in].
| Zofunikira za Mankhwala a ASTM A501 Giredi B,% | |||
| Kapangidwe kake | Giredi B | ||
| Kusanthula Kutentha | Kusanthula Zamalonda | ||
| C (Kaboni)B | kuchuluka | 0.22 | 0.26 |
| Mn (Manganese)B | kuchuluka | 1.40 | 1.45 |
| P (Phosphorus) | kuchuluka | 0.030 | 0.040 |
| S(Sulfure) | kuchuluka | 0.020 | 0.030 |
| Cu (Mkuwa)B (pamene chitsulo cha mkuwa chatchulidwa) | mphindi | 0.20 | 0.18 |
| BPa kuchepetsa kulikonse kwa 0.01 peresenti pansi pa 0.01 peresenti yodziwika bwino ya kaboni, kuwonjezeka kwa 0.06 peresenti pamwamba pa 0.01 peresenti yodziwika bwino ya manganese kumaloledwa, mpaka 1.60% poyesa kutentha ndi 1.65% poyesa zinthu. | |||
Kusanthula kwa zinthu kuyenera kuchitika pogwiritsa ntchito zitsanzo zoyesera zomwe zatengedwa kuchokera ku mapaipi awiri atali kuchokera ku gawo lililonse la 500, kapena gawo limodzi mwa magawo ake, kapena zidutswa ziwiri za stock yozungulira yozungulira kuchokera ku gawo lililonse la stock yozungulira yozungulira yofanana.
Zitsanzo zokoka ziyenera kutsatira zofunikira za Njira Zoyesera ndi Matanthauzidwe A370, Appendix A2.
| Zofunikira pa ASTM A501 Giredi B Tensile | |||
| Mndandanda | Kukhuthala kwa Khoma mm [mkati] | Giredi B | |
| Kulimba kwamakokedwe, min, psi[MPa] | Zonse | 65000 [448] | |
| Mphamvu yobereka, min, psi[MPa] | ≤25 [1] | 46,000 [315] | |
| ＞25 [1] ndi ≤ 50 [2] | 45,000 [310] | ||
| ＞50 [2] ndi ≤ 76 [3] | 42,500 [290] | ||
| ＞76 [3] ndi ≤ 100 [4] | 40,000 [280] | ||
| Kutalikitsa, osachepera, % | — | 24 | |
| Mphamvu Yokhudza Mphamvu | mphindi,avareji, ft/Ibf [J] | — | 20 [27] |
| mphindi,wosakwatiwa, ft/Ibf [J] | — | 14 [19] | |
Zitsanzo zoyesera za kupsinjika ziyenera kukhala zitsanzo zazikulu zoyesera zakutali kapena zitsanzo zoyesera zakutali.
Kwa machubu olumikizidwa, zitsanzo zilizonse zoyesera za mzere wautali ziyenera kutengedwa kuchokera pamalo osachepera 90° kuchokera ku weld ndipo ziyenera kukonzedwa popanda kuphwanyika muutali wa geji.
Mayeso a mzere wautalizitsanzo ziyenera kuchotsedwa ma burrs onse.
Zitsanzo zoyesera kupsinjika siziyenera kukhala ndi zolakwika pamwamba zomwe zingasokoneze kutsimikiza koyenera kwa mphamvu zokoka.
Kukhuthala kwa khoma ≤ 6.3mm [0.25in] sikufuna kuyesedwa kwa mphamvu.
| Kulekerera kwa ASTM A501 Dimensional | ||
| Mndandanda | kukula | Zindikirani |
| Chidutswa chakunja (OD) | ≤48mm (1.9 in) | ±0.5mm [1/48 inchi] |
| ＞50mm (2 in) | ± 1% | |
| Kukhuthala kwa Khoma (T) | Kukhuthala kwa khoma komwe kwatchulidwa | ≥90% |
| Kulemera | kulemera kotsimikizika | 96.5%-110% |
| Utali (L) | ≤7m (22 ft) | -6mm (1/4in) - +13mm (1/2in) |
| 7-14m (22-44 ft) | -6mm (1/4in) - +19mm (3/4) | |
| Kuwongoka | Kutalika kuli mu mayunitsi achifumu (ft) | L/40 |
| Mayunitsi a kutalika ndi metric (m) | L/50 | |
Chitoliro cha kapangidwe kake chiyenera kukhala chopanda zilema ndipo chiyenera kukhala chosalala chifukwa cha njira yopangira zinthu zotentha.
Pamene kuya kwa zolakwika pamwamba pa chitoliro kupitirira 10% ya makulidwe a khoma, zolakwika izi ziyenera kuonedwa kuti sizikugwirizana ndi zomwe zikuchitika. Kukonza pogwiritsa ntchito kuwotcherera kudzaloledwa pokhapokha ngati wogula ndi wopanga agwirizana. Asanakonze pogwiritsa ntchito kuwotcherera, zolakwika zomwe ziyenera kukonzedwa ziyenera kuchotsedwa kwathunthu pogwiritsa ntchito njira zodula kapena zopera.
Kuti chitoliro chomangidwa chikhale chotenthedwa ndi galvanized, chophimba ichi chiyenera kutsatira zofunikira za SpecificationASTM A53.
Kutalika kulikonse kwa chubu chomangidwa kuyenera kulembedwa ndi njira yoyenera, monga kupukuta, kuponda, kuponda, kapena kupaka utoto.
Chizindikiro cha ASTM A501 chiyenera kukhala ndi izi:
Dzina la wopanga
Chizindikiro kapena chizindikiro
Kukula
Dzina la muyezo (chaka chofalitsidwa sichifunika)
Giredi
Pa machubu omangidwa <50 mm [2 in] OD, ndikololedwa kulemba zambiri zachitsulo pa chizindikiro cholumikizidwa ku phukusi lililonse.
Chitsulo cha ASTM A501 Giredi B chimaphatikiza mphamvu ndi kusinthasintha ndi njira yopangira yotentha, zomwe zimapangitsa kuti chikhale choyenera kugwiritsidwa ntchito m'njira zosiyanasiyana.
Kumanga ndi kumanga: Kawirikawiri amagwiritsidwa ntchito pomanga nyumba ndi zomangamanga komwe kumafunika mphamvu zambiri komanso kulimba kwa zipangizo zolimba. Izi zikuphatikizapo nyumba, mabwalo amasewera, milatho, ndi nyumba zina.
Zipangizo ZamakampaniChifukwa cha mphamvu zake zambiri, ndizoyenera kugwiritsidwa ntchito m'mafakitale monga mafakitale ndi nyumba zosungiramo katundu komwe kulimba kwa nyumba ndikofunikira kwambiri.
Zomangamanga zamayendedwe: mtundu uwu umagwiritsidwa ntchito popanga zomangamanga zoyendera, kuphatikizapo masiteshoni a sitima, ma eyapoti, ndi malo odutsa misewu ikuluikulu.
Zigawo Zamkati: Amagwiritsidwanso ntchito kwambiri popanga zinthu monga mizati, matabwa, ndi ma trusses, zomwe zimapanga chimango cha nyumba zosiyanasiyana.
Kupanga zida: Pakupanga zida zolemera ndi makina, ingagwiritsidwe ntchito pazigawo zomwe zimafuna zida zamphamvu kwambiri.
Wopanga ayenera kupatsa wogula satifiketi yosonyeza kuti chinthucho chinayesedwa, chinayesedwa, ndipo chinayang'aniridwa motsatira mfundo izi ndi zina zilizonse zomwe zafotokozedwa mu dongosolo logulira kapena pangano ndipo zofunikira zonsezo zinakwaniritsidwa. Satifiketi yosonyeza kuti chinthucho chatsatiridwa iyenera kuphatikizapo nambala yeniyeni ndi chaka chomwe chinaperekedwa.
Botop Steel ndi kampani yopanga mapaipi achitsulo cha kaboni yopangidwa ndi welded komanso yogulitsa mapaipi ochokera ku China, komanso kampani yogulitsa mapaipi achitsulo chosasunthika.
Botop Steel ili ndi kudzipereka kwakukulu pa khalidwe ndipo imagwiritsa ntchito njira zowongolera ndi kuyesa mwamphamvu kutikuonetsetsa kuti malonda ndi odalirika. Gulu lake lodziwa bwino ntchito limapereka mayankho ogwirizana ndi zosowa za makasitomala komanso thandizo la akatswiri, poganizira kwambiri kukhutitsidwa kwa makasitomala. Tikuyembekezera kugwira nanu ntchito.
