The na-ekpo ọkụ akpọrepu nkenke enweghị nkebi ígwè ọkpọkọ mmepụta akara nakweere elu Arccu-Roll Rolled tube setịpụrụ iji mepụta casing, tubing, ọkpọkọ ọkpọkọ, pipeline na mmiri ọkpọkọ, wdg.
A na-eme ọkpọkọ ọkpọkọ dị arọ dị arọ site na AISI 4142H-4145H alloy structural steel.Usoro nrụpụta na-arụ ọrụ nke ọma SY/T5146-2006 na ụkpụrụ API SPEC 7-1.
A na-emepụta ahịrị elu plastik HP nke epoxy fiber na tubing na-agbada n'ụzọ kwekọrọ na nkọwa API.Ihe a na-emepụta kwa afọ na-abịarute 2000km n'ogologo nwere dayameta sitere na DN40 ruo DN300mm.The epoxy FRP HP n'elu ahịrị nwere ọkọlọtọ API ogologo gburugburu eri njikọ na mejupụtara ihe, onye eyi iguzogide enwekwu anwụrụ ọrụ ndụ.
Emere olu akwa a site na AISI 4145H ma ọ bụ mechaa nchara nchara nchara, edozi ya dịka ọkọlọtọ API SPEC 7.
A na-emepụta tubing na casing dịka nkọwa API siri dị.Emechara ahịrị ọgwụgwọ okpomọkụ na akụrụngwa dị elu yana ngwa nchọpụta nwere ike ijikwa casing na 5 1/2″ ruo 13 3/8″ (φ114 ~ φ340mm) dayameta na tubing na 2 3/8″ ruo 4 1/2″ ( φ60 ~ φ114mm) dayameta.