N'ihi na maara otú enwetara n'elu 20 afọ, HEBEI SANSO Machinery CO., LTD bụ ike chepụta, wuo na wụnye ERW welded tube igwe ihe maka mmepụta nke tubes na nso si 8mm ruo 508 mm dayameta, n'ichepụta ha dị ka mmepụta ọsọ na ọkpụrụkpụ na nkọwa n'elu ahịa nkọwapụta.
E wezụga zuru ezu welded tube igwe ihe, SANSO na-enye onye akụkụ maka nnọchi ma ọ bụ mwekota n'ime ẹdude welded tube igwe ihe igwe: uncoilers, tuo na larịị igwe, akpaka ịkwa osisi na ọgwụgwụ ịgbado ọkụ igwe, kehoraizin spiral accumulators, na n'ụzọ zuru ezu akpaka mbukota igwe.