Kunzwisisa Mabhenefiti eASTM A139 Spiral Steel Pipe ye Underground Natural Gasi Pipelines
suma:
Kana zvasvika pakutakurwa kwegasi rechisikigo, kukosha kwepombi dzepasi pevhu hakugone kuwedzeredzwa.Aya mapaipi anovimbisa kuchengetedzwa uye kwakanyatso kuendesa kwesimba rakakosha iri kudzimba, mabhizinesi nemaindasitiri.Kuti uve nechokwadi chekugara kwenguva refu, kuvimbika uye kusimba kwemapombi aya, kushandiswa kwezvinhu zvemhando yepamusoro kwakakosha.Pakati pezvakawanda zvingasarudzwa zviripo,ASTM A139spiral simbi pombi inomira sechisarudzo chakakosha.Mune ino blog, isu tichanyura mukati mezvimiro uye mabhenefiti anoita ASTM A139 zvinhu zvesarudzo zvepasi pevhu gasi gasi mapaipi.
Mechanical Property
| Giredhi A | Giredhi B | Grade C | Grade D | Giredhi E | |
| Goho simba, min, Mpa(KSI) | 330(48) | 415(60) | 415(60) | 415(60) | 445(66) |
| Kusimba simba, min, Mpa (KSI) | 205(30) | 240(35) | 290(42) | 315(46) | 360(52) |
Kuumbwa Kwemakemikari
| Element | Kuumbwa, Max,% | ||||
| Giredhi A | Giredhi B | Grade C | Grade D | Giredhi E | |
| Carbon | 0.25 | 0.26 | 0.28 | 0.30 | 0.30 |
| Manganese | 1.00 | 1.00 | 1.20 | 1.30 | 1.40 |
| Phosphorus | 0.035 | 0.035 | 0.035 | 0.035 | 0.035 |
| Sulfur | 0.035 | 0.035 | 0.035 | 0.035 | 0.035 |
Hydrostatic Test
Hurefu hwega hwega hwepombi huchaedzwa nemugadziri kune hydrostatic pressure iyo inoburitsa mumadziro epombi kushushikana kusingasviki 60% yeiyo yakataurwa kushomeka kwegoho pakupisa kwekamuri.Kudzvanywa kunozotemwa neinotevera equation:
P=2St/D
Kusiyana Kunobvumirwa Muhuremu uye Zviyero
Hurefu hwega hwega hwepombi huchayerwa hwakasiyana uye huremu hwayo hahuzosiyane kupfuura 10% pamusoro kana 5.5% pasi pehuremu hwayo hwekufungidzira, huchiverengerwa uchishandisa kureba kwayo uye uremu hwayo pahurefu hweyuniti.
Iyo dhayamita yekunze haifanire kusiyana kupfuura ± 1% kubva kune yakatsanangurwa yekunze dhayamita.
Ukobvu hwemadziro chero nguva haufanire kupfuura 12.5% pasi peiyo yakataurwa madziro ukobvu.
Urefu
Single random urefu: 16 kusvika 25ft (4.88 kusvika 7.62m)
Hurefu hwakapetwa kaviri: pamusoro pe25ft kusvika 35ft (7.62 kusvika 10.67m)
Hurefu hwakafanana: musiyano unobvumidzwa ±1in
Ends
Mirwi yepombi inofanira kuiswa pachena, uye maburi ari kumigumo anofanira kubviswa.
Kana iyo pombi inopera yakatsanangurwa kuve bevel inopera, kona ichave 30 kusvika 35 degree
ASTM A139: Kusarudzwa kwePasi pevhu Natural Gas Pipemitsetse:
1. Simba nekusimba:
ASTM A139spiral simbi pombiinozivikanwa nokuda kwesimba rayo rakanaka uye simba rekuita.Aya hunhu akakosha kune epasi pevhu gasi mapaipi nekuti anogara achioneswa kune akasiyana siyana ezvakatipoteredza uye epasi pevhu.Iyo spiral dhizaini yepombi yesimbi inosimudzira kurongeka kwayo kwechimiro, ichiibvumira kukurira kudzvinyirirwa kwekunze kwepamusoro uye kuderedza njodzi yekudonha kana kuputika.
2. Corrosion resistance:
Mapombi epasi pevhu anotapukirwa nekuora kunokonzerwa nemvura, makemikari evhu nezvimwe zvinhu.ASTM A139 spiral simbi pombi inogadzirisa dambudziko iri nekupa yepamusoro corrosion kuramba.Izvi zvinonyanya kukonzerwa ne-zinc-rich coating, iyo inopa chipingamupinyi chekudzivirira kubva kune zvinoparadza zvinhu, kuve nechokwadi chehupenyu hurefu hwepombi uye kuderedza kudiwa kwekugara uchigadzirisa kana kutsiva.
3. Weldability uye zvakasiyana-siyana:
ASTM A139 spiral simbi pombi ine yakanakisa weldability, inobvumira yakatsetseka, inoshanda majoini panguva yekuisa.Iyi ficha inonyanya kubatsira kunepasi pevhu gasi pombi, sezvo inovimbisa kutendeseka kwepombi system uye inoderedza njodzi yekudonha.Pamusoro pezvo, kuwanda kwe spiral simbi pombi inobvumira kuti igadzirwe nyore muhurefu hwakasiyana-siyana uye madhayamita kuti isangane nezvinodiwa zvepurojekiti zvakasiyana, zvichibatsira mukudhura-kushanda uye kugadzirisa.
4. Mutengo-kubudirira:
Imwe mukana wakakosha wekushandisa ASTM A139 spiral simbi pombi yemapombi epasi pegasi echisikigo kudhura kwayo.Kusimba kwechinyorwa, corrosion kuramba uye kureruka kwekumisikidza kunoderedza kwenguva refu yekugadzirisa uye kutsiva mutengo.Pamusoro pezvo, chiyero chayo chesimba-kusvika-huremu chinoderedza kudiwa kwezvivakwa zvekutsigira zvakakura panguva yekuisa, zvichikonzera kuchengetwa kwemutengo wakazara.
5. Mafungiro ezvakatipoteredza:
ASTM A139 spiral simbi pombi inogadzirwa ichishandisa zvakatipoteredza maitiro uye inoomerera kune yakasimba kuchengetedza zviyero.Zvimiro zvayo zvinodzivirira corrosion zvinobatsira kudzivirira kubuda kwegasi, pakupedzisira kuderedza kukanganisa kwezvakatipoteredza.Pamusoro pezvo, kudzokorodza kwesimbi kunoita kuti ive sarudzo ine hushamwari, ichisimbisazve mabhenefiti ekushandisa ASTM A139 spiral simbi pombi yemapombi epasi pegasi egasi.
Mukupedzisa:
Kusarudza zvinhu zvakanaka zvepasi pevhu gasi pombi kwakakosha kuti uve nechokwadi chekufambisa kwakachengeteka, kwakanaka uye kwakavimbika kweiyi simba rakakosha.ASTM A139 spiral simbi pombi isarudzo yakanakisa nekuda kwesimba rayo, kusimba, kushora kwemarara, weldability, mutengo-kushanda, uye kufunga kwezvakatipoteredza.Hunhu hwayo hwakasiyana hunoita kuti ive yekutanga sarudzo kune mainjiniya uye mamaneja epurojekiti ari kutsvaga kuvaka pasi pevhu pevhu gasi mapaipi anomira muyedzo wenguva.Nekudyara muzvinhu zvemhando yepamusoro seASTM A139 spiral simbi pombi, tinogona kuve nechokwadi chekugara uye yakachengeteka gasi rekuparadzira gasi zvivakwa kuzvizvarwa zvinotevera.
