Ipayipi elishiselwe, elaziwa nangokuthi ipayipi lensimbi elishiselwe, ngokuyisisekelo lenziwa ngepuleti lensimbi noma umucu oshiselwe ngemva kokubola nokwakheka.Ipayipi lensimbi elishiselwe linezinzuzo zenqubo yokukhiqiza elula, ukusebenza kahle kokukhiqiza okuphezulu, izinhlobo eziningi kanye nokucaciswa, kanye nokutshalwa kwezimali kwemishini encane, kodwa amandla ayo ajwayelekile aphansi kunalawo epayipi lensimbi engenamthungo.Kusukela ngawo-1930s, ngokuthuthuka okusheshayo kokukhiqizwa kwe-strip rolling ephezulu kanye nenqubekelaphambili yobuchwepheshe bokushisela kanye nobuchwepheshe bokuhlola, ikhwalithi ye-welded seam ibilokhu ithuthukiswa ngokuqhubekayo, izinhlobonhlobo kanye nokucaciswa kwepayipi lensimbi elishiselwe kuye kwanda, nensimbi engenamthungo. ipayipi selishintshiwe ezindaweni eziningi.Amapayipi ensimbi ashiselwe ahlukaniswe abe ipayipi elihlanganisiwe le-seam eliqondile kanye nepayipi elihlanganisiwe elivunguzayo ngokusho kohlobo lwe-weld.

一.Ukwahlukaniswa kwamapayipi ashiselwe Amashubhu ashiselwe

Amapayipi ashiselwe ahlukaniswa ngokusetshenziswa kwawo: aphinde ahlukaniswe amapayipi ashiselwe ajwayelekile, amapayipi ashiselwe, aphefumula umoya-mpilo amapayipi ashiselwe, imikhono yocingo, amapayipi ashiselwe we-metric, amapayipi angasebenzi, amapayipi epompo ajulile, amapayipi emoto, amapayipi okuguqula umoya, ashiselwe abe mncane. -amapayipi anezindonga, amapayipi ashiselwe angavamile kanye namapayipi ashiselwe athandelene.

二.Uhla Lokusebenza Lwepayipi Elishiselwe

Imikhiqizo yamapayipi ashiselwe isetshenziswa kabanzi kubhayela, imoto, ukwakha umkhumbi, ukwakha iminyango yesakhiwo esinesisindo esincane namafasitela ensimbi, ifenisha, imishini ehlukahlukene yezolimo, i-scaffolding, ipayipi yokufaka izintambo, amashalofu aphezulu, izitsha nokunye ingahlangabezana nezidingo zekhasimende, ipayipi elikhethekile elishiselwe okungavamile lingakhiqizwa ngokuvumelana nezidingo zomsebenzisi.

三.INDLELA YOKUBALA YOMBONGO YESISINDO SEPIPE ESHISHISIWE  

Kunamafomula okubala isisindo sepayipi elishiselwe.

Isisindo sethiyori imitha ngayinye yepayipi lensimbi (ukuminyana kwensimbi ngu-7.85 kg/dm3)

Ifomula: W = 0.02466 (DS)S

Kufomula yokubala, isisindo sethiyori sepayipi le-W-steel imitha, kg/m;

D - Ububanzi obungaphandle bepayipi lensimbi, mm;

S - ukushuba odongeni lwensimbi, mm.

四.Incazelo Esemthethweni Nokusetshenziswa Kwezimboni Kwepayipi Elishiselwe

Izinto zokusetshenziswa ezisetshenziswa esigayweni esishiselwe ishubhu ipuleti lensimbi noma umucu wensimbi.Ingahlukaniswa ipayipi elishiselwe esithandweni somlilo, ipayipi elishiselwe kagesi kanye nepayipi elizenzakalelayo le-arc elishiselwe ngenxa yobuchwepheshe obuhlukene bokushisela.Ngokusho kwamafomu e-welding ahlukene, ingahlukaniswa ibe ipayipi elihlanganisiwe eliqondile kanye ne-spiral welded pipe.per ukuma kokuphela, ingahlukaniswa ibe yipayipi elihlanganisiwe eliyindilinga kanye nepayipi elihlanganisiwe elikhethekile (ipayipi eliyisikwele eliyisikwele njll.) .Amapayipi ashiselwe angahlukaniswa abe yizigaba ezilandelayo ngokwezinto zawo ezihlukene kanye nokusetshenziswa kwawo:

1. GB/T3091-1993 (Ipayipi Lensimbi Elishiselwe Ngamagalati Yokudluliswa Koketshezi Lokucindezela Okuphansi)

Isetshenziselwa kakhulu ukudlulisa amanzi, igesi, umoya, uwoyela, ukushisisa amanzi ashisayo noma isitimu kanye nolunye uketshezi olujwayelekile olunomfutho ophansi kanye namanye amapayipi enhloso.Izinto zayo ezimele ziyinsimbi yezinga Q235A.

2. GB/T3092-1993 (Ipayipi Lensimbi Elishiselwe Ikhalvanized Yokudluliswa Koketshezi Lokucindezela Okuphansi)

Isetshenziselwa kakhulu ukudlulisa amanzi, igesi, umoya, uwoyela, ukushisisa amanzi ashisayo noma isitimu kanye nolunye uketshezi olujwayelekile olunomfutho ophansi kanye namanye amapayipi enhloso.Izinto zayo ezimele ziyinsimbi yezinga le-Q235A.

3. GB/T 14291-1992 (Ipayipi Elishiselwe Lezokuthutha Ezimanzi Ezimayini)

Isetshenziselwa kakhulu ukucindezela komoya emayini, i-drainage, i-shaft gas drainage ngomthungo oqondile wepayipi wensimbi.Izinto zayo ezimele ziyi-grade Q235A nensimbi engu-B.I-GB/T 14980-1994 (Ipayipi Lensimbi Elishiselwe Ububanzi Elikhulu Lokudluliswa Kwe-Fluid Yokucindezela Okuphansi).Isetshenziswa kakhulu ukudlulisa uketshezi olunomfutho ophansi njengamanzi, indle, igesi, umoya, ukushisisa isitimu nezinye izinjongo.Izinto zayo ezimele ziyinsimbi yezinga Q235A.

4. GB/T12770-1991 (Ipayipi elishiselwe lensimbi engagqwali lokwakhiwa komshini)

Isetshenziselwa kakhulu imishini, izimoto, amabhayisikili, ifenisha, ukuhlobisa kwehhotela nehhotela nezinye izingxenye zemishini nezingxenye zesakhiwo.Izinto zayo ezimele ziyi-0Cr13, 1Cr17, 00Cr19Ni11, 1Cr18Ni9, 0Cr18Ni11Nb, njll.

I-GB/T12771-1991 (Ipayipi Lensimbi Engenasici Elishiselwe Yezokuthutha Eziwuketshezi)

Isetshenziselwa kakhulu ukudlulisa imidiya elimazayo enengcindezi ephansi.

Izinto ezimele i-0Cr13, 0Cr19Ni9, 00Cr19Ni11, 00Cr17, 0Cr18Ni11Nb, 0017Cr17Ni14Mo2, njll.