ʻO ka hana nui o ф 48-3620mm mānoanoa pā 6mm-40mm i hoʻoikaika ʻia i ka papa 3PE seamless steel paipu, ka aila a me ke kinoea pipeline, ka aila a me ke kinoea hoʻoili papahana i uhi ʻia i ka paipu plastik, i uhi ʻia i ka paipu pale ahi ahi, pale ahi i loko a i waho i uhi ʻia i ka paipu kila plastik, ʻO ka paipu kila hoʻoheheʻe ʻana i ka mana plastic dip, pipe protection pipe.