Square Pipe
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Construction square rectangular bututu welded baki karfe bututu
Bakin karfe murabba'i tube ne m tsiri na karfe, domin sashe ne square da ake kira square tube. Babban adadin bututun da ake amfani da su don isar da ruwa, kamar mai, iskar gas, ruwa, gas, tururi, da sauransu, bugu da ƙari, a cikin lanƙwasawa, ƙarfin torsional a lokaci guda, nauyi mai nauyi, don haka ana amfani da shi sosai wajen kera sassan injiniyoyi da tsarin injiniya.