1.Amapayipi ensimbi ashiselwezokuthutha ezimanzi ezinomfutho ophansi (GB/T3092-1993) zibizwa nangokuthi amapayipi ashiselwe ajwayelekile, aziwa kakhulu ngokuthi amapayipi amnyama.

Kuyipayipi lensimbi elishiselwe ukudlulisa uketshezi olujwayelekile lomfutho ophansi njengamanzi, igesi, umoya, uwoyela nesishifu sokushisisa nezinye izinjongo. Amapayipi ensimbi ahlukaniswe abe amapayipi ensimbi ajwayelekile kanye namapayipi ensimbi ajiyile ngokusho kodonga; ngokwendlela yokuphela kwamapayipi, ahlukaniswe amapayipi ensimbi angafundiwe (amapayipi abushelelezi) namapayipi ensimbi anentambo. Ukucaciswa kwepayipi lensimbi kuboniswa ububanzi obubizwa ngokuthi (mm), okuwukulinganiselwa kobubanzi bangaphakathi. Kuwumkhuba ukuveza ngamasentimitha, njengokuthi 11/2. Ngaphezu kokusetshenziswa ngokuqondile ukuthutha uketshezi, amapayipi ensimbi ashiselwe okuthutha uketshezi olunomfutho ophansi nawo asetshenziswa kabanzi njengamapayipi okuqala amapayipi ensimbi ashiselwe ukuthutha uketshezi olunomfutho ophansi.

2. Ipayipi lensimbi eliphekiwe elishiselwe ukuthutha uketshezi olunomfutho ophansi (GB/T3091-1993) liphinde libizwe ngokuthi ipayipi lensimbi elishiselwe ngogesi, elivame ukubizwa ngokuthi ipayipi elimhlophe.

Amapayipi ensimbi ane-hot-dip galvanized welded (isithando somlilo esishiselwe noma ashiselwe ngogesi) okuhambisa amanzi, igesi, uwoyela womoya, isitimu sokushisisa, amanzi afudumele kanye nolunye uketshezi oluvamile olunomfutho ophansi noma ezinye izinjongo. Amapayipi ensimbi ahlukaniswe abe amapayipi ajwayelekile ensimbi namapayipi ensimbi agqinsisiwe ngokokuqina kodonga; ngokwendlela yokuphela kwepayipi, ahlukaniswe ngamapayipi ensimbi angafakwa imicu kanye namapayipi ensimbi anentambo. Ukucaciswa kwepayipi lensimbi kuvezwa ububanzi obujwayelekile (mm), okuyinani elilinganiselwe lobubanzi obungaphakathi.

3. I-Ordinary carbon steel wire casing (GB3640-88) iyipayipi lensimbi elisetshenziselwa ukuvikela izintambo kumaphrojekthi wokufaka ugesi njengezakhiwo zezimboni nezabantu, ukufakwa kwemishini nemishini.

4. Umthungo oqondile wepayipi kagesi oshiselwe (YB242-63) iyipayipi lensimbi elinomthungo we-weld ohambisana nendawo yobude bepayipi lensimbi. Imvamisa ihlukaniswe ngamapayipi ensimbi kagesi ashiselwe kagesi, ipayipi elicijile elinezindonga ezincane, ipayipi likawoyela lokupholisa i-transformer njalonjalo.

5.Kuvunguza umthungo ongaphansi kwamanzi we-arc oshiselwe ipayipi lensimbiezokuthutha uketshezi olucindezelwe (SY5036-83) yenziwe ngamakhoyili ensimbi agingqike ashisayo njengezikhala zeshubhu, ngokuvamile ezakheka ngokuvunguza emazingeni okushisa afudumele, futhi ashiselwe ngokushisela i-arc engaphansi kwezinhlangothi ezimbili. Isetshenziselwa ukuthutha uketshezi olunengcindezi. Ipayipi lensimbi ye-Spiral seam. Ipayipi lensimbi linamandla okuthwala ingcindezi kanye nokusebenza okuhle kwe-welding. Ngemuva kokuhlolwa okuqinile okunhlobonhlobo kwesayensi nokuhlolwa, kuphephile futhi kuthembekile ukusetshenziswa. Ububanzi bepayipi lensimbi bukhulu, ukusebenza kahle kwezokuthutha kuphezulu, futhi ukutshalwa kwezimali ekubekweni kwamapayipi kungagcinwa. Isetshenziselwa ikakhulukazi amapayipi okuthutha uwoyela negesi yemvelo.

6. Ipayipi lensimbi elishiselwe i-Spiral-frequency high-frequency weld for fluidized transportation (SY5038-83) lenziwe ngekhoyili yensimbi egoqelwe eshisayo njengeshubhu elingenalutho, elivame ukwakhiwa ngokuvunguza ekushiseni, futhi lishiselwe nge-high-frequency lap welding. Isetshenziselwa ukuthutha uketshezi olunengcindezi. Kuvunguza umthungo ipayipi insimbi high frequency ashiselwe. Ipayipi lensimbi linomthamo oqinile wokuthwala ingcindezi kanye nepulasitiki enhle, elungele ukushisela nokucubungula. Ngemuva kokuhlolwa nokuhlolwa okunhlobonhlobo okuqinile nokwesayensi, kuphephile futhi kuthembekile ukusetshenziswa. Isetshenziselwa kakhulu ukubeka amapayipi okuthutha uwoyela, igesi yemvelo, njll.

7. Ngokuvamile, umthungo ovunguzayo ongaphansi kwamanzi we-arc oshiselwe ipayipi lensimbi (SY5037-83) lokudlulisa uketshezi olunomfutho ophansi wenziwa ngekhoyili yensimbi egoqelwe eshisayo njengeshubhu elingenalutho, elivame ukwakheka ngokuvunguza, futhi lenziwa ngokuzenzakalelayo okunezinhlangothi ezimbili. ukushisela i-arc ngaphansi kwamanzi noma ukushisela ohlangothini olulodwa. Amapayipi ensimbi ashiselwe i-arc angaphansi kwamanzi okuthutha uketshezi olunengcindezi ephansi njengamanzi, igesi, umoya nesitimu.

8. Ipayipi lensimbi elishiselwe i-Spiral seam high-frequency welded (SY5039-83) yokudlulisa uketshezi olunomfutho omncane ovamile wenziwa ngekhoyili yensimbi egoqelwe eshisayo njengeshubhu elingenalutho, elivame ukwakhiwa ngokuvunguza ekushiseni okuphezulu, futhi lishiselwa nge-high-frequency lap welding. ukudlulisa uketshezi olunomfutho ophansi jikelele. Ipayipi lensimbi elishiselwe imvamisa ephezulu.

9. Amapayipi ensimbi ashiselwe ku-Spiral ezinqwaba (SY5040-83) enziwe ngamakhoyili ensimbi agoqelwe ashisayo njengezikhala zamashubhu, ngokuvamile akhiwa ama-spiral afudumele, futhi enziwe nge-arc welding enezinhlangothi ezimbili ezingaphansi kwamanzi noma i-high-frequency welding. Zisetshenziselwa izakhiwo zokwakha zomphakathi, ama-wharf, Amabhuloho nezinye izinqwaba zesisekelo ezinamapayipi ensimbi.