I n’a fɔ funteni-minɛnw ni fɛnw lasecogo minɛnw bi-bi in na, nɛgɛ pibilikiw bɛ baara kɛ kosɛbɛ petoroli, kemikɛli ani tasuma-sɛnɛyɔrɔw la. U ka baara kɛcogo bɛ nɔ bila sigida lakanani ni fanga sɔrɔcogo ɲuman na. Walasa ka fɛn dilannenw ka ɲɛtaa sabati ani ka u ka dannaya sɔrɔ, nɛgɛdaga minnu bɛ bɔ u la, olu dilanni n’u sɔnni ka kan ka tugu kosɛbɛ waleyali sariyaw la minnu bɛ tali kɛ o la.
N ka jamana kɔnɔ, nɛgɛ pipe minnu bɛ se ka wuli, olu waleyali kunba ye GB/T 29047{-2012, "High-Density Polyetylene Outer Sheath Pipe, Polyurethane Foam Plastique Prefabricated Direct-Bried insulated pipe" ani CJ/T 114{{5}3} Pipe kɛnɛma, poliyuritani foam plastiki ka kɔn ka buri insulated pipe ni fittings." O sariyaw bɛ fɛn caman ɲɛfɔ nɛgɛ pipe fɛn na, insulation layer structure, outer sheath baarakɛcogo, ani fɛɛrɛko wajibiyalenw bɛɛ lajɛlen. Misali la, nɛgɛ pipew bɛ kɛ cogo la min tɛ fɛn tiɲɛ walima u bɛ sɔgɔ ni sumaya ye, wa o fɛn ka kan ka GB/T 8163 walima GB/T 9711 sariyaw labato walasa ka degunw hakɛ ni u sɔgɔli kunbɛn. A ka c’a la, insulation layer bɛ dilan ni poliyurithane foam gɛlɛn ye, min ka funteni jiginni ka dɔgɔn ani a fanga ka bon. A girinya n’a density ka kan ka dilancogo wajibiyalenw dafa walasa ka funteni bɔnɛ dɔgɔya ani ka nɛgɛ pipe lakana. A ka ca a la, a bɛ kɛ ni poliyetilɛni (HDPE) ye min bɛ kɛ ni fɛn caman ye, o bɛ waati kunbɛncogo ɲuman ni masin fanga di. Sariyaw b’a jira ka jɛya ko a bɛ se ka nɔ bila sigida degunw tiɲɛni na ani a kɛlɛli la.
Ka fara o kan, diɲɛ sariyaw i n’a fɔ ISO 23940:2019, "Piping systems insulated propfabricated", o bɛ kunnafoni di fɛnw kan minnu bɛ taa jamana wɛrɛw la, ka sinsin fɛnw bɛnkan kan ani waati jan- waati baara ɲɛnamaya kan. Engineering applications kɔnɔ, sariyaw ka kan ka sugandi ka kɛɲɛ ni ko kɛrɛnkɛrɛnnenw ye. Misali la, duguba kɔnɔ tasuma-fanga-minɛnw bɛ se ka ɲɛsin CJJ/T 81-2013 ma, "Technical Specification for direct buried hot water pipelines for urban heating," k'a sɔrɔ petrochemical industry bɛ se ka tugu API walima ASTM sariyaw la minnu ka gɛlɛn kosɛbɛ.
Ka tugu kosɛbɛ izini sariyaw la nɛgɛ pipew kan, o tɛ dan pibiliki baarakɛcogo sabatili dɔrɔn ma{0}} waati la, nka a bɛ fanga sɔrɔcogo ɲuman fana ɲɛ ani ka dɔ bɔ ladonni musakaw la. Ni fɛɛrɛ kuraw ye, sariyaw bɛna ɲɛ ka taa a fɛ, ka nɛgɛ pipew labɛn minnu bɛ lakana ka taa baarakɛcogo ɲuman na ani sigida teriya la.
