A na-akpọkwa ọkpọkọ ọkpọkọ welded nke obere dayameta, nke bụ ọkpọkọ nchara nke a na-eme site na ịgbado efere ígwè ma ọ bụ nchara nchara mgbe agbachara ya. Usoro mmepụta nke obere dayameta welded pipe dị mfe, mmepụta mmepụta dị elu, e nwere ọtụtụ ụdị na nkọwapụta, na ọnụ ahịa ngwá ọrụ dị ntakịrị, ma ike n'ozuzu dị ala karịa nke ọkpọ ígwè na-enweghị ntụpọ. Ebe ọ bụ na 1930s, na ngwa ngwa mmepe nke na-aga n'ihu mmepụta nke elu-edu warara ígwè na mma nke ịgbado ọkụ na nkà na ụzụ nyocha, àgwà nke welds ka nọgidere mma, na iche iche na nkọwa nke obere-dayameta welded ọkpọkọ anọwo na-amụba na dochie na ọtụtụ ubi na-enweghị enweghị nkebi ígwè ọkpọkọ. welded ígwè anwụrụ na-ekewa n'ime ogologo onuete welded ọkpọkọ na gburugburu welded anwụrụ dị ka ụdị weld.

Ihe oghere ndị a na-eji maka obere ọkpọkọ welded bụ efere ígwè ma ọ bụ mpempe akwụkwọ, nke a na-ekewa n'ime ọkụ ọkụ ọkụ, ọkụ eletrik (na-eguzogide) ọkpọkọ, na ọkpọkọ arc na-akpaghị aka n'ihi usoro ịgbado ọkụ ha dị iche iche. Enwere ụdị ọkpọkọ abụọ welded: ogologo nkedo welded ọkpọkọ na spiral welded pipe. N'ihi njedebe njedebe ya, a na-ekewa ya na ọkpọkọ welded gburugburu na ụdị pụrụ iche (square, flat, etc.) ọkpọkọ welded.

Usoro mmepụta nke obere welded ọkpọkọ dị mfe, nrụpụta mmepụta dị elu, ọnụ ala na mmepe ngwa ngwa. Ike nke spiral welded ọkpọkọ na-adịkarị elu karịa nke ọkpọkọ ogologo welded ọkpọkọ. Enwere ike ịmepụta ọkpọkọ welded nwere dayameta buru ibu site na mpempe akwụkwọ ndị dị warara. A pụkwara ịmepụta ọkpọkọ welded nke nwere dayameta dị iche iche na mpempe akwụkwọ nke otu obosara. Otú ọ dị, e jiri ya tụnyere ọkpọkọ ogologo ogologo nke otu ogologo ahụ, ogologo eriri weld na-abawanye site na 30 ruo 100%, na mmepụta ọsọ dị ala. Ya mere, ọkpọkọ welded nke nta-dayameta na-abụkarị n'ọnụ ọnụ kwụ ọtọ, na nnukwu dayameta welded ọkpọkọ na-akasị okirikiri welded.