ʻAʻole hiki ke hoʻohaʻahaʻa i ka mana o ke kahua hui asphalt. He hopena nui nō hoʻi i ka hoʻomehana wela o ka paipu lawe asphalt. ʻO kēia no ka mea e pili pono ana nā hōʻailona hana koʻikoʻi o ka asphalt, e like me ka viscosity a me ka sulfur content, i ke kahua hui asphalt. ʻO ka ʻōlelo maʻamau, ʻoi aku ka nui o ka viscosity, ʻoi aku ka maikaʻi o ka hopena atomization, e pili pono ana i ka hana pono a me ka hoʻohana wahie. Ke piʻi aʻe ka mahana, e emi mālie ka viscosity o ka aila kaumaha, no laila pono e hoʻomehana ʻia ka ʻaila kiʻekiʻe no ka lawe ʻana a me ka atomization.

No laila, ma waho aʻe o ka hoʻomaopopo ʻana i kāna mau hōʻailona maʻamau i ke koho ʻana, pono ʻoe e ʻike i kona ʻano viscosity-temperature curve i mea e hiki ai i ka hoʻomehana ke hiki i ka asphalt i ka viscosity i koi ʻia e ka mea puhi ma mua o ka atomization. I ka nānā ʻana i ka ʻōnaehana asphalt circulation, ua ʻike ʻia ua paʻa ka asphalt i ka pipeline no ka mea ʻaʻole i hoʻokō ka mahana o ka pipeline transport asphalt i nā koi.
ʻO ka nānā ʻana i nā kumu, ʻo nā kumu nui penei:
1. He haʻahaʻa loa ka pahu aila kiʻekiʻe o ka ʻaila hoʻoili wela, e hopena i ka maikaʻi ʻole o ka neʻe ʻana o ka ʻaila wela;
2. He eccentric ka paipu o loko o ka paipu papalua;
3. He lōʻihi loa ka pipeline aila hoʻoili wela;
4. ʻAʻole mālama pono ʻia ka pipeline aila hoʻoili wela. ʻO nā ana insulation kūpono, a me nā mea ʻē aʻe, ʻo ia nā kumu nui e pili ana i ka hopena wela.