U ka etsa bonnete ba hore botenya ba zinki bo kopana le litlhoko tsa projeke ea hau joang?
Bakeng sapeipi ea tšepe ea masenke, ts'ireletso ea nako e telele- ea kutu e tsamaisoa kebotenya ba zinki le mokhoa oa ho roala. Mokhoa o nepahetseng oa galvanizing o lokela ho khethoa ho ea ka tikoloho eo pipeline e tla kenngoa ho eona.
Bakeng sadibaka tse senyang haholo- joalo ka lipolanete tse kantle ho naha, meaho ea mabopo kapa libaka tse phatlohang - rea khothaletsaho chesa haholo-dip galvanizinge nang le boima ba ho roala500 g/m² le ho feta. Lera lena le letenya la zinki le fana ka bophelo bo bongata maemong a maoatle, lijase tse lebopong la leoatle, liphaephe tsa jetty, liphaephe tsa liphaephe tse hloekisang le mesebetsi ea tšepe e pepeneneng.
Bakeng sa marangrang a phepelo ea metsi litoropong, lithapo tsa ts'ireletso ea mollo le liphaephe tse akaretsang tsa liindasteri, pente e tloaelehileng e chesang{0}dip dip galvanized ea 300 g/m² hangata e lekane. Boemo bona ba tšireletso bo lumellana le lithapo tse ngata tsa metsi tsa 'masepala, liphaephe tsa litšebeletso tsa mohaho, sefafatsi sa mollo le lisebelisoa tsa metsi, tse fanang ka nako e telele ka theko e tlaase.
Bakeng sa-bongata, tekanyetso-mesebetsi e hlokolosi joalo ka mesebetsi ea nakoana, phepelo ea metsi libakeng tsa mahaeng kapa liforeimi tse bobebe, pele-masepala (peipi ea galvanized coil) ea 60–150 g/m² e ka ba khetho ea moruo. Liphaephe tsena tse entsoeng ka masenke li loketse ha bophelo ba moralo le ho pepeseha ho lekanyelitsoe 'me ho nkeloa sebaka kapa ho fokotsoa hoa amoheleha.
Ka ho bapisabotenya ba ho roala zinkilemokhoa oa galvanizingho sehlopha sa 'nete sa kutu ea projeke ea hau, o ka lelefatsa bophelo ba ts'ebeletso, oa qoba ho hloleha pele ho nako le ho boloka litšenyehelo tsa tlhokomelo li le taolong.
Joang ho khetha maemo a nepahetseng a peipi ea galvanized bakeng sa morero oa hau?
Tekanyetso eo u e khethang e ea khethollabotenya ba lebota, thepa ea mochini le boima bo tlase ba ho roala zinki, 'me ke ntlha ea bohlokoa ho botsitso ba morero ka kakaretso le litšenyehelo tsa potoloho ea bophelo.
Bakeng sadibaka tsa kutu e tlase ho isa ho tse maharengjoalo ka meaho ea khoebo,{0}}kabo ea khatello e tlase ea metsi le khase, marang-rang a ho fafatsa mollo le lisebelisoa tsa HVAC,phala ea tšepe ea ASTM A53e sebedisoang haholo. Ho tjhesa-dip galvanized coating bakeng sa maemo ana a teng1.8 oz/ft² (≈0.55 kg/m²), e lekaneng bakeng sa ho pepesehela ka ntle kapa ka ntle ha bobebe.
Bakeng sa phetisetso ea metsi, lithapo tsa ho noa metsi a tala, likhoele tsa metsi tse patiloeng le lits'ebetso tsa metsi a litšila tse lulang li pepesehetse metsi le mobu, AWWA C200 le maemo a amanang le metsi a sebetsang hangata a hlalosoa. Mona, ho khothaletsoa likoti tsa zinki tsa 2.0 oz/ft² (≈0.61 kg/m²) kapa ho feta, ho fana ka tšireletso e betere liphaepheng tsa metsi tsa masepala, likhoele tsa likhoerekhoere le metsi a litšila, libaka tsa ho hloekisa le liteishene tsa ho pompa.
Ho itšetlehile ka morero oa hau, re ka boela ra sebetsa hoEN kapa ISO maemo a lipeipi tsa galvanizedmoo ho nang le litloaelo tse itseng tsa sebaka kapa litlhoko tsa bareki. Mosebetsi oa rona ke ho u thusa ho khetha maemo a leka-lekaneng:
- bophelo bo hlokahalang ba moralo
- tikoloho (ka tlung/ka ntle, mobu, maoatleng, indastering)
- khatello le ho kenya mochine
- maemo a tlhomamiso le tlhokomelo
e le hore tsamaiso ea hau ea lipeipi tsa tšepe e lule e tsitsitse bakeng sa bophelo bohle ba morero.
Joang ho etsa bonnete ba hore boleng ba liphaephe tse nang le masenke bo kopana le litlhoko tsa projeke?
| Mothati/ Ntho | Seo re se Hlahlobang & Joang | Seo e se netefatsang bakeng sa Morero oa hau |
|---|---|---|
| Netefatso ea tšepe ea motheo | Hlahlobasebopeho sa lik'hemik'halelethepa ea mochine(yield, tensile, elongation) ea tšepe ea motheo. | Pipe e hlile e kopana le kereiti e laetsoeng, e nang le matla a lekaneng le boima bo lekaneng bakeng sa khatello e boletsoeng le ho kenya. |
| Galvanizing bath & coating weight | Taolobath k'hemistri le mocheso; lekanya botenya ba zinki kalitekanyo tsa makenetemme, moo ho hlokahalang,X-ray fluorescence (XRF). | Seaparo sa zinki se lekanang, se lekantsoeng hantle ka hare le ka ntle, eseng feela ka lebitso kapa ka mokhoa o sa lekanang. |
| Ts'ebetso ea kutu (sefafatsi sa letsoai) | Phethaliteko tsa sefafatsi sa letsoai kapa liteko tse potlakisang ho bolaho etsisa sepakapaka sa mabopo, indasteri kapa se silafetseng. | Pakiloeng khanyetso bakeng saho haha bokantle, liphaephe, marokho a pepenene a lipeipile ditikoloho tse tshwanang. |
| Geometry & adhesion | Licheke tsa boholo,diteko tsa ho batalatsa/ho kobale tlhahlobo ea ho khomarela ea lera la galvanized. | Coating hore lula bonded nakongho tshwara, ho roka, ho korotla le ho tjheseletsa, ho fokotsa tšenyo le ho sebetsa bocha. |
Ha e le hantle, "zinki e lumellanang le ASTM B6" e bolela ho sebelisa-li-ingots tsa zinki tse hloekileng tse nang le maemo a laoloang ka thata a lead, cadmium, iron le trace elements tse ling. ASTM B6 e hlalosa limaraka tse 'maloa tsa zinki tse nang le zinki tse tlase le meeli e phahameng ea ho se hloeke ho netefatsa hore ho na le mokelikeli o motle ka har'a bateng e chesang-, botenya bo tsitsitseng le ho khomarela ka matla holim'a tšepe. Ka ho sebelisa ASTM B6 feela-zinki e ikamahanyang le maemo, sekontiri se chesang-dip dip galvanized coating e fana ka monyetla oa ho tseba hore ho na le kutu le ho qoba likoli tse ka hlahang ha ho sebelisoa zinki ea boemo bo tlase kapa e sebelisoang hape.
-e ntse e sebetsa 'me e qetella ka mor'a ho belisoa
| Beha-ntho e ntseng e sebetsa | Seo re fanang ka sona | Tšebeliso ea mantlha / molemo |
|---|---|---|
| Pipe e entsoeng ka likhoele | Likhoele tsa NPT kapa tsa BSP ho ea ho maemo a Amerika, Borithane kapa a mang a naha. | E loketsesefatshe sa mollo, ditshebeletso tsa kaho, kabo ea khaselelipeipi tsa lisebelisoa tsa indasteri. |
| Tlhophiso ea pheletso ea lipeipi | E felile, e hlakile kapa e kobehile ho latela litlhoko tsa projeke. | E lumellana lemahokelo a grooved, welding kapa maqhama a flanged, ho etsa hore moralo oa sistimi o fetohe habonolo. |
| Ho hloekisoa ha bokaholimo ka mor'a ho belisoa | Ho hloekisa ka hare le ka ntle ho tlosa phallo e setseng, molora le likaroloana tse hlephileng. | E fokotsa kotsi ea hothibane kapa tshilafatsohometsi, moea le mehala ea tšebetso, ho ntlafatsa botšepehi ba tsamaiso. |
| Tšireletso nakong ea lipalangoang | Li-couplings le li-end caps tsa polasetiki ka bolelele bo bong le bo bong, hammoho le mekhoa e nepahetseng ea ho bokella le ho bokella. | Sireletsalikhoele le liphaephe tse qetellangnakong ea lipalangoang le ho sebetsana, ho fokotsa tšenyo, ho sebetsa bocha le ho fetola sebaka. |
Lisebelisoa tse tloaelehileng - hore na pipe ea galvanized e sireletsa likarolo tse fapaneng joang
Ka lebaka la ho roala zinki le 'mele o tiileng oa tšepe,peipi ea tšepe ea masenkee sebelisoa haholo hohle moo ho leka-lekaneng ha matla, litšenyehelo le ho hanyetsa ho bola ho hlokahalang.
Maemo a tloaelehileng a ts'ebeliso a kenyelletsa:
- Kaho le kaho
Lipeipi tsa ka ntle tsa metsi a pula, li-handrails, litšepe tsa ho lebela, litšepe tsa lithapo le litho tse bobebe tsa sebopeho tse pepesehileng boemo ba leholimo. Pipe e nang le galvanized e fokotsa ho penta hape le ho lokisa khafetsa lienfelopong tsa moaho le lifensetereng.
- Sisteme ea metsi le litšila
Kabo ea metsi a nooang, lisebelisoa tsa mollo, likhoele tsa ho nosetsa le likarolo tsamarang-rang a metsi a litšila le likhoerekhoeremoo ho hlokehang tšireletso ea kutu e itekanetseng. Peipi e nang le masenke hangata e sebelisoa-likarolong tsa fatše, likamoreng tsa ho pompa le libakeng tsa ho hloekisa.
- Liphaephe tsa lisebelisoa tsa indasteri
Moea o hatelitsoeng, metsi a pholileng,{0}metsi a sebetsang ka khatello e tlase le litselana tsa litšebeletso lifemeng le lifemeng. Pipe ea tšepe ea galvanized e fana ka tšireletso e tšoarellang holiindasteri atmospheres, lithupelo le ka ntle liraka liphaephe.
- Polokelo ea oli le phetisetso (khatello e tlase{{0})
{{0}oli e nang le khatello e tlase, disele le mehala ea oli e tsamaisang oli e pota-potileng litanka, libaka tsa ho palamisa le litheminale. Peipi e nang le galvanized e fana ka mokelikeli o matla, o bonolo-ho{3}}ho boloka tharollo bakeng sa mefuta e mengata ea ka ntle, ho kenya liphaka, lipompo tsa skid le lisebelisoa tsa lisebelisoa tsa oli tse pepesehileng mongobo le nako le nako.
- Kabo ea khase le marang-rang a lisebelisoa
Khatello e tlase{{0}kabo ea khase ea tlhaho le LPG ka har'a meaho kapa ka har'a lits'ebetso tsa lisebelisoa tsa polante, moo likhoutu li lumellang lipeipi tse entsoeng ka masenke. Ho roala zinki ho sireletsaka holimo{{0}lithapo tsa khase ea fatše, li-meter runs le lipeipi tsa ka tlung tse tsoang ho condensation le maemo a bonolo a indasteri.
- Fencing le mesebetsi e bobebe ea sebopeho
Lipalo tsa terata, lipalo tsa matšoao, li-scaffolding le meaho ea nakoana, haholo-holo hodiporojeke tsa metseselegae, tsa temothuo le tsa mafaratlhatlha, moo ho hlokahalang tharollo e tšoarellang empa e le chelete.
Ka ho khetha lintlha tse nepahetseng tsa lipeipi tse entsoeng ka masenke le boemo ba ho roala bakeng sa e 'ngoe le e 'ngoe ea maemo ana, u ntlafatsa ts'epahalo ea sistimi le ho fokotsa litšenyehelo tsohle tsa tlhokomelo.
Ke hobane'ng ha u re khetha re le mofani oa hau oa lipeipi tsa tšepe tse entsoeng ka masenke
Joalo ka e khethehilengmofani oa lipeipi tsa tšepe tse entsoeng ka masenke, re etsa ho fetang feela ho rekisa lintho tse tloaelehileng tsa lethathamo. Re u thusa ho theha tharollo ho potoloha projeke ea hau:
- Ho roala zinki ka tloaelo le khetho ea ts'ebetso
Ho chesa haholo-dip galvanizing bakeng sa ts'ebeliso ea maoatle le maoatleng, hot e tloaelehileng-dip bakeng sa meaho le lits'ebetso tsa indasteri, kapa pele{2}}galvanized coil pipe bakeng sa-bolumeli bo boholo, theko{4}}mosebetsi o bobebe-o khethiloeng ho ea ka tikoloho ea hau le bophelo ba moralo.
- Maemo le litlhaloso tse tsamaellanang le lekala la hau
Re fana ka phala ea masenke hoASTM A53, AWWA C200 le maemo a amanang le ona, e nang le boima ba ho roala, tekanyo ea mochine le sebaka sa teko se etselitsoeng homesebetsi ea metsi, litšebeletso tsa kaho, lisebelisoa tsa oli le khase kapa limela tsa indasteri.
- Qetella ho qeta le ho sebetsa ka har'a sephutheloana se le seng
Pipe e entsoeng ka likhoele, e kentsoeng kapa e betliloeng e nang le likhoele tse tsamaellanang, li-flange le li-fittings li ka fanoa hammoho, ho fokotsa tšebelisano lipakeng tsa barekisi ba bangata le ho etsa hore ho kenngoe sebaka ka potlako.
- Tšehetso ea boleng bo ngotsoeng le botekgeniki
U fumana litokomane tse felletseng tsa liteko le lirekoto tsa ho koahela, hammoho le ts'ehetso ea boenjiniere mabapi le khetho ea ho roala, khetho e tloaelehileng le maemo a kopo, kahoo sehlopha sa hau se ka lokafatsa liqeto ho beng le baeletsi.
Ka ronatloaelo galvanized phala tharollo, o ka hlakisa hantle seo o se hlokang bakeng sa projeke ka nngwe-botenya ba ho roala, maemo, ho qeta le ho paka{1}}mme o fumane sephutheloana se seng se loketse ho kenngwa, se sebetsang ka nako e telele le ho hlokomelwa ha bonolo ha nako e ntse e tsamaya.
LBH
Q1: Ke boima ba zinki bofe (g/m²) boo ke lokelang ho bo khetha bakeng sa phala ea tšepe ea masenke?
Q2: Ho chesa-dip galvanized vs. pre-galvanized{4}}phapang e sebetsang ke efe?
Q3: Ke lokela ho netefatsa eng pele ke reka phala ea tšepe ea masenke ho qoba litaba tsa boleng?
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