Ewebata: N'ụwa nke injinia nhazi, A252 Grade 1 ọkpọkọ nchara na-enweta traction n'ihi ike ya na ịdịte aka ya.A na-eji pipeline ndị a eme ihe n'ọtụtụ ụlọ ọrụ dị iche iche, gụnyere ihe owuwu, mmepe akụrụngwa, na njem mmanụ na gas.Na blọọgụ a, w...
GỤKWUO