Spiral pombi, inozivikanwawo se spiral simbi pombi kana spiral welded pombi, isimbi yakadzika-kabhoni structural simbi kana yakaderera-alloy structural simbi tambo yakakungurutswa muchubhu isina chinhu pane imwe helical angle (inonzi forming angle), inozivikanwawo se spiral chubhu kana muviri unotenderera. Idhayamita yekunze yespiral chubhu ingangoita 30 nanometers, dhayamita yemukati ingangoita 10 nanometers, uye gomo riri pakati pemaspirals ari pedyo rinoda kuita gumi nerimwe.

Ndedzipi nzira dzekuona kana mhando yehombe-diameter spiral welded mapaipi ari kusvika pachiyero?

1. Kuongorora nenzira yemuviri: nzira yekuongorora muviri inzira yekuyera kana kuongorora nekushandisa zvimwe zviitiko zvemuviri.

2. Muedzo wesimba wemudziyo wekumanikidza: Pamusoro pekuomesera bvunzo, mudziyo wekumanikidza unodawo kuedzwa kwesimba. Kazhinji kune marudzi maviri e hydrostatic test uye air pressure test. Iwo ese ari maviri anoongorora kusimba kwewelds mungarava uye pombi dzinoshanda pasi pekumanikidzwa. Iyo mhepo yekumanikidza bvunzo inonzwisisika uye nekukurumidza kupfuura iyo hydraulic test. Panguva imwecheteyo, iyo yakakura-diameter spiral welded pombi mushure mekuyedzwa haidi kudonhedzwa, iyo inonyanya kukodzera zvigadzirwa zvine kuoma kwemvura. Zvisinei, njodzi yekuedzwa yakakura kudarika iyo ye hydrostatic test. Panguva yekuyedzwa, matanho ekuchengetedza anoenderana anofanirwa kuteverwa kudzivirira tsaona panguva yekuyedzwa.
3. Hydrostatic test: Imwe neimwe yakakura-diameter spiral welded pipe inofanira kuiswa pasi pe hydrostatic pressure test pasina kuvuza. The test pressure inoverengwa sezvinotevera: P = 2ST/D.
Mune fomula, S-yekuyedza kushushikana Mpa yeiyo hydrostatic bvunzo, uye bvunzo kushushikana kweiyo hydrostatic bvunzo inosarudzwa zvichienderana ne60% yemutengo wegoho unotsanangurwa mune inoenderana simbi strip standard.

4. Kutonga kubva pamusoro, ndiko kuti, kutarisa kwechimiro, inzira yakapfava uye yakashandiswa zvikuru yekuongorora. Icho chikamu chakakosha chekupedzwa kwechigadzirwa chekuongorora. Izvo zvinonyanya kutsvaga kukanganisa pane weld surface uye dimensional kutsauka. Kazhinji, inoongororwa nemaziso asina kupfeka, nerubatsiro rwema templates akajairwa, geji, magirazi ekukudza uye mamwe maturusi. Kana pane chikanganiso chepamusoro che weld, pane mukana wekukanganisa mukati me weld.