Pakali pano, Hunan Great Steel Pipe Co., Ltd ali ndi 3 seti otentha-anagulung'undisa osasokonekera zitsulo chitoliro kupanga mzere ndi seti 2 ya otentha-wowonjezera osasokonekera zitsulo chitoliro mzere kupanga ndi mphamvu kupanga pachaka matani 200,000, osiyanasiyana kukula ndi 73mm kuti. 630 mm. Zake thupi ndi mankhwala ma labs kabu kuchititsa mayesero osiyanasiyana thupi ndi mankhwala ndi zoyesera kwa mipope zitsulo, ndipo okonzeka ndi Eddy panopa zowunikira chilema, kutayikira vuto kuzindikira ndi akupanga mng'alu zowunikira etc. Pakuti mkulu, sing'anga ndi otsika kuthamanga opanda zitsulo mipope ndi mafuta casing mapaipi ndi osiyanasiyana miyeso yoyendera, wokhoza kukwaniritsa zosiyanasiyana muyezo mayeso ndi kuyendera zofunika mipope zitsulo.