Parizvino, Hunan Great Steel Pipe Co., Ltd ine 3 seti yekupisa-yakamoneredzwa isina musono pombi yekugadzira pombi uye 2 seti inopisa-yakawedzera musono simbi yekugadzira pombi tambo ine gore negore kugadzirwa kwe200,000 matani, saizi yekukura kubva pa73mm kusvika. 630mm.Yayo yemuviri nemakemikari labs cab inoitisa bvunzo dzakasiyana dzemuviri nemakemikari uye kuyedza pombi dzesimbi, uye dzakashongedzerwa needdy current flaw detectors, leakage fault diagnosis uye ultrasonic crack detectors etc. For high, medium and low pressure seamless steel pombi uye petroleum casing pombi. ine huwandu hwakazara hwematanho ekuongorora, anokwanisa kusangana akasiyana siyana chiyero bvunzo uye yekuongorora zvinodiwa papombi dzesimbi.