Ma dolphin ndi milu yomwe imaponyedwa pansi m'madzi ndi m'madoko kuti zombo zipeze malo oti zikokere kapena kuimika. Ma dolphin ali ndi ntchito zosiyanasiyana: monga kuyamwitsa ma dolphin, ayenera kuyesedwa kuti agwirizane ndi momwe sitimayo imakhudzira, monga momwe amamangirira ma dolphin, katunduyo umachokera ku chingwe chokha. Dolph...
Chiyambi: EN10219 ndi muyezo wa ku Europe wa magawo obowoka opangidwa ndi zitsulo zopanda aloyi ndi tirigu wabwino. Womic Steel, wopanga mapaipi achitsulo otsogola a EN10219, amapereka zinthu zosiyanasiyana zomwe zimakwaniritsa mitundu yosiyanasiyana ndi ...
Chiyambi: API 5L ndi muyezo wokhazikitsidwa ndi American Petroleum Institute (API) wa mapaipi achitsulo opanda msoko komanso olumikizidwa omwe amagwiritsidwa ntchito m'machitidwe oyendera mkati mwa mafakitale amafuta ndi gasi. Womic Steel, wopanga wamkulu wa API 5L...