Nchara pipeline nke oge a bụ obere carbon ma ọ bụ ultra-low-carbon microalloyed steel, nke bụ ngwaahịa nwere ọdịnaya teknụzụ dị elu yana uru agbakwunyere.Ọtụtụ n'ime ihe ndị ọhụrụ na nkà na ụzụ rụzuru na metallurgical ubi n'ime afọ 20 gara aga ka etinyere na mmepụta nke pipeline ígwè.Usoro mmepe nke injinia pipeline bụ dayameta ọkpọkọ buru ibu, ụgbọ njem gas bara ụba nke ukwuu, ịdị jụụ dị elu, gburugburu ebe eji corrosion dị elu, yana ọkpụrụkpụ mgbidi dị n'okpuru mmiri.Ya mere, nchara pipeline nke oge a kwesịrị inwe ike dị elu, mmetụta Bauschinger dị ala, ịdị elu siri ike na nguzogide nbibi, obere weld carbon ọdịnaya na ezigbo weldability, na iguzogide HIC na H2S corrosion.
A na-eji efere ọkpọkọ na-emepụta ọkpọkọ eriri welded, n'ihi na a na-eme ọkpọkọ ahịrị enweghị nkebi nke gburugburu mmanya, ọ bụghị efere ígwè.A na-ejikarị efere dị oke ala na-emepụta nnukwu mgbidi kwụ ọtọ ogologo nkedo welded, a na-ejikwa igwe igwe na-emepụta ọkpọkọ eletriki resistane welded(ERW) na spirally submerged arc welded(SSAW) pipe.N'oge a, ọtụtụ ndị ahịa na-achọ ka efere ígwè pipeline na-emepụta ọkpọkọ ahịrị n'ihi na a pụrụ iji efere ígwè rụọ nnukwu ọkpọkọ, na mgbakwunye, ọnụahịa nke ọkpọkọ welded na-adịkarị ala karịa nke ọkpọkọ na-enweghị ntụpọ.
Line ọkpọkọ ígwè efere bụ isi ihe maka mmepụta nke ERW ọkpọkọ, LSAW ahịrị ọkpọkọ, SSAW ahịrị ọkpọkọ, nke na-eji na ọkpọkọ na-ewu na mmanụ, gas na mmiri iga, ọ ga-eji na n'ichepụta nsogbu mmiri mmiri nnyefe ewu.
Okpomọkụ arctic dị oke ala, nrụgide dị ukwuu n'ime oke osimiri miri emi, mgbasa ozi acid: ọbụlagodi ọnọdụ kachasị njọ enweghị mmetụta ọjọọ na mpempe akwụkwọ anyị.Efere ahịrị nwere ike ịrụ ọrụ n'ime omimi nke ruru mita 2,800 n'okpuru oke osimiri.
Anyị na-enyekwa efere nchara arụrụ arụ nke dị n'ụsọ osimiri nwere mkpuchi corrosion na-eguzogide maka ihe ndị kachasị mkpa na ngwa utoojoo gas.Dị ka ọkachamara na teknụzụ ọgbara ọhụrụ na-ekpo ọkụ na-ekpo ọkụ, anyị so na ndị isi ụlọ ọrụ ụwa.
