Spiral Pipe (saw simbi pombi): nemutsetse nemupumburu wekugadzira muchina, kupeta spiral kutungamira, uyezve mativi maviri akanyudzwa arc welding inogadzirwa kuburikidza necapacitor. Spiral welded simbi pombi yekugadzira maitiro, anowanzo kudonha muzviitiko zvakawanda, senge welding uye divi risiri iro. Nekudaro, mune izvi zviitiko zvinoonekwa Chlamydia ndiyo yakanyanya kuoma kubata spiral simbi butt weld.

Izvo zvinonzi trachoma: kuti iyo yekugadzira mukati mukati meiyo weld kana welds, hakuna kumbove nekunyatsopinda kwezvimedu kana mabhuru, pamwe chete nechimiro chegomba rejecha riri pamusoro peiyo weld. Zvikonzero zvetrachoma ndezvi:
1, kupihwa kwetochi yewelding panguva yezvino idiki, iyo capacitor ipfupi, iyo capacitor haina kunyatso nyatso kana welding iyo welding surface yakaomeswa, saka panoitika kupinda kwejecha kana kwete mabhubhu.
2, scimitar tune mukati memutsetse wakaita curvature yenguva pasina yakanaka butt, butt strip haienderane chaizvo, pakave nemukaha wakawandisa pakati pebutt strip.
3, butt welded simbi kana mativi maviri asina kuchenera kumucheto kwetambo ngura kana chikero.
4, hapana nguva yekugadzirisa yekugadzira michina yekuchenesa. Workbench guruva kana tsvina, zvisizvo kuwira mugomba pane butt welding yesimbi.
5, tembiricha yekushanda yakadzikira kana kunyorova musangano, izvo zvinokanganisa tembiricha uye kuoma kwewelding point.