Kukosha kweASTM A139 mu Underground Natural Gasi Pipeline Kuvaka
Spiral welded kabhoni simbi pombi inogadzirwa kutiASTM A139yakanyatsogadzirirwa kushandiswa kwepasi pevhu sekufambiswa kwegasi rechisikigo uye masisitimu ekuparadzira. Mapombi aya anogadzirwa pachishandiswa yakasarudzika welding process inogadzira majoini akasimba uye akasimba, ayo akakosha kumirisana nepasi pevhu uye mamiriro ezvakatipoteredza aya mapombi achaiswa.
Mechanical Property
| Grade 1 | Grade 2 | Grade 3 | |
| Yield Point kana goho simba, min, Mpa (PSI) | 205(30 000) | 240(35 000) | 310(45 000) |
| Kusimba simba, min, Mpa (PSI) | 345(50 000) | 415(60 000) | 455(66 0000) |
Iyo spiral welding process inoshandiswa muASTM A139 inopa pombi kuenderana uye yakatsetseka yemukati nzvimbo, iyo yakakosha kuve nechokwadi chekuyerera kwakanaka kwegasi rechisikigo kuburikidza nepombi. Mapombi aya anowanikwawo mune zvakasiyana-siyana zvemadhayamita uye madziro makubvu, achibvumira kuchinjika mukugadzira uye kuvaka kuti isangane nezvinodiwa zvegasi rechisikigo kutapurirana kana kugovera system.
Pamusoro pekuvimbika uye kusimba, pombi yeASTM A139 inopa kushora, izvo zvakakosha pakuona kuperera kwenguva refu kwepasi pevhu gasi pombi. Iyo kabhoni simbi inoshandiswa mumapombi aya yakanyatsogadzirwa kuti irambe corrosion, kuve nechokwadi chekuti mapombi anoramba akasimba uye asingabvire kwemakore anotevera.
Kuchengetedza kwakakosha zvakanyanya mukuvakwa kwemapaipi epasi pegasi chaiwo. Mapombi eASTM A139 anogadzirwa uye akaedzwa kune yakasimba indasitiri zviyero uye zvakatemwa, kuve nechokwadi kuti vanogona kumirisana nematambudziko akasiyana epasi pevhu kunyorera. Izvi zvinopa gasi remusikirwo zvinoshandiswa, zvigadziriso uye veruzhinji runyararo rwepfungwa vachiziva kuti zvivakwa zvinounza gasi rechisikigo zvakavimbika uye zvakachengeteka.
Mukupedzisa, ASTM A139spiral welded carbon steel pipeinoita basa rakakosha mukuvaka mapaipi egasi repasi pevhu. Kugara kwadzo, corrosion kuramba uye kutevedzera indasitiri zviyero zvinovaita vakanakira mapurojekiti akakosha seaya. Kana zvasvika pakuve nechokwadi chekuchengetedza, kuvimbika, uye kushanda kwegasi rechisikigo kutapurirana uye kugovera masisitimu, kushandisa ASTM A139 pombi isarudzo isingagone kufuratirwa. Nekusarudza zvinhu zvakafanira zvezvishandiso izvi zvepasi pevhu, tinogona kuve nechokwadi chekuti gasi redu rechisikigo zvivakwa zvinoramba zvakachengeteka uye zvakavimbika kuzvizvarwa zvinouya.
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