Hollo Bolt
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Onye na-ebubata ụlọ ọrụ China Onye na-emepụta ihe na-ere ahịa Hollo-Bolts ICC-ES kwadoro bolts mgbasawanye - ihe mmebawanye maka akụkụ Structural Hollow (SHS/HSS)
Hollo-Bolt bụ ihe nkedo a na-eji jikọọ nchara na ngalaba oghere, dị ka akụkụ akụkụ anọ, akụkụ anọ ma ọ bụ okirikiri (HSS). Enwere ike iji ha rụọ ọrụ nchara nchara ebe ohere dị naanị site n'otu akụkụ.
