High-frequency longitudinally welded ọkpọkọ mmepụta akara bụ tumadi ji maka mmepụta nke welded ígwè ọkpọkọ nke φ8 ~ φ610 mm na mgbidi ọkpụrụkpụ nke 0.5 ~ 20mm nakwa dị ka mmepụta nke square, akụkụ anọ, na ndị ọzọ omenala enweghị nkebi ọkpọkọ profaịlụ, Carbon ígwè ọkpọkọ. , ERW ígwè tube. Ahịrị ahụ nwere ike rụpụta ọkpọkọ welded na ezigbo igwe na-agbakọta nkenke na oke ọsọ.