Simbi pombi ndiyo inonyanya kushandiswa gasi pombi chirongwa. Mabhenefiti ayo makuru ndeaya: kusimba kwepamusoro, kusimba kwakanaka, kutakura kushushikana, kukanganisa kupikisa uye kusimba, yakanaka plasticity, nyore welding uye thermal processing, ukobvu hwemadziro hwakatetepa, kuchengetedza simbi. Asi kushomeka kwayo kwegora, inoda kuve nematanho akakodzera ekurwisa ngura.

Simbi mapaipi egasi mapaipi muguta guru resina musono uye welded simbi pombi mumapoka maviri. Yakakwirira simba isina musono simbi pombi, asi kudzikisira kugadzirwa muitiro uye mutengo kazhinji dhayamita dhayamita simbi pombi DN200 pazasi. Mamwe marudzi e welded simbi mapaipi, welding inogona kupatsanurwa nechakatwasuka musono welded simbi pombi uye spiral welded simbi pombi mhando. Pakati pavo, yakatwasuka musono welded simbi pombi (pano inonzi yakatwasuka musono pombi) inosanganisirawo LSAW simbi pombi uye yakakwirira frequency kuramba welding (RW) simbi pombi uye mamwe marudzi. Spiral welded simbi pombi (saw simbi pombi) ari spiral musono kaviri submerged arc welded (HSAW) pombi.

Iyo yakatwasuka seam uye spiral pombi yekugadzira maitiro inofananidzwa, yekutanga ine mukana we:
① spiral pombi yekugadzira maitiro ekuona kusara kwavo kushushikana kwakakura kupfuura iyo yakatwasuka musono pombi, yakatwasuka musono pombi ine mhedzisiro yekuwedzera maitiro, yakasara kushushikana padyo ne zero, nepo spiral haigone kuita izvi;

② spiral weld wrong side mostly in the range of 1.1 ~ 1.2mm, chiyero chinoda kuwanda kwedivi risiri iro remadziro ukobvu kusvika pasi pe10% yemachubhu akatetepa-akavakirwa, divi risiri iro rakaoma kuzadzisa zvinodiwa, uye straight seam pipe haipo Dambudziko iri;

③ Kana ichienzaniswa nepipe yemusono yakatwasuka, spiral weld line inoyerera haina kunaka, yakanyanya kushushikana mupfungwa;

④ coil kupisa kwakakanganiswa nzvimbo yakakura kupfuura yakatwasuka musono pombi, uye pombi kupisa kwakakanganiswa nzvimbo ndiyo kiyi yemhando;

⑤ spiral geometry kurongeka, kunzvimbo yekuvaka, semumwe wake, welding kunounza mamwe matambudziko.