Ulusi Wapamwamba

Kampaniyo ili ndi ukadaulo wapamwamba wopangira ma coupling coupling casing ndi luso latsopano lopanga zinthu; ili ndi akatswiri apamwamba komanso akatswiri komanso ogwira ntchito aluso; ili ndi zida zamakono zopangira ndi kukonza, zida zowunikira ndi zida, komanso zinthu zambiri zokhudzana ndi mafuta (OCTG) zomwe zimathandizira pakupanga ulusi.