Imikhiqizo yokuthengisa: amapayipi ensimbi engenamthungo, amapayipi ensimbi engagqwali, amapayipi ashiselwe, amapayipi adiphu ashisayo, amakhoyili ensimbi, amapuleti ensimbi, amakhoyili ensimbi engagqwali, amapuleti ensimbi engagqwali, imicu yensimbi ene-prestressed, insimbi eyindilinga, i-bearing steel, amapayipi ensimbi ayizikwele angama-rectangular, ashisayo -cwilisa amapayipi ensimbi ayisikwele ayisikwele esiwunxande, ipayipi lensimbi elinenziwe ngepulasitiki, ipayipi lensimbi elihlanganiswe ngepulasitiki, ipayipi elishiselwe okuvunguza, iphrofayili ye-aluminium.