Pakali pano, Hunan Great Steel Pipe Co., Ltd ali ndi 3 ya seti yotentha-yokulungidwa yopanda msoko kupanga chitoliro chachitsulo ndi ma seti awiri a mzere wopangira chitsulo chosakanizidwa ndi chitsulo chopanga matani 200,000 pachaka, kukula kwake kumachokera ku 73mm mpaka 630 mm.Zake thupi ndi mankhwala Laboratory kabu kuchititsa mayesero osiyanasiyana thupi ndi mankhwala ndi zoyesera kwa mipope zitsulo, ndipo okonzeka ndi Eddy panopa cholakwa zowunikira, 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.