ʻEkolu ʻano polypropylene, a i ʻole copolymer maʻamaupaipu polypropylene, ua kuhikuhi ʻia e ka pōkole PPR. Ke hoʻohana nei kēia mea i ka welding wela, loaʻa nā mea hana wili a me nā mea ʻokiʻoki, a he kiʻekiʻe ka plasticity. Maikaʻi nō hoʻi ke kumukūʻai. Ke hoʻohui ʻia kahi papa insulating, ʻoi aku ka maikaʻi o ka hana insulation a ʻo ka paia o ka paipu, koe naʻe nā hui ma waena o nā uea i loko a me waho.

Hoʻohana maʻamau ia i nā paipu i kanu mua ʻia i nā luawai hohonu a i ʻole nā ​​paia i hoʻokomo ʻia.PPR paipuhe ola lawelawe a hiki i ka 50 makahiki, ua kūpono ke kumu kūʻai, kūpaʻa i ka hana, ka wela a me ka mālama ʻana i ka wela, ka corrosion-resistant, smooth a me ka non-scaling ma ka paia o loko, palekana a hilinaʻi i ka ʻōnaehana pipeline. No ka hōʻoia ʻana i ka palekana o ka ʻōnaehana, pono nā lako paʻakikī a me nā limahana kūpono no ke kūkulu ʻana, nona nā koi ʻenehana kiʻekiʻe.

ʻO nā leo mālie a like ʻole—ma mua o nā leo ʻokoʻa i loaʻa i loko o nā paipu wai ʻē aʻePaipu wai PP-Rhe ʻano hoihoi a me ke kala. (Ke manaʻo pinepine nei nā mea kūʻai aku ʻo ke keʻokeʻo ka waihoʻoluʻu maikaʻi loa no nā paipu PP-R, akā ʻaʻole ke kala ka pae no ka hoʻoholo ʻana i ka maikaʻi; ʻokoʻa ka maikaʻi o nā paipu wai PP-R mai nā paipu PP-R, a me ke kala o ka wai. ʻAʻohe pili o ka paipu me ia (he mau kala ʻē aʻe i hoʻohui ʻia me ka masterbatch kala hiki ke hana ʻia inā lōʻihi ka masterbatch kala, ʻaʻole ia e hoʻohaʻahaʻa a hoʻopilikia i ka maikaʻi o ka PP no laila, he mea pili ole ke kala o ka paipu wai.

Ma keʻano laulā, hiki ke hoʻohana ʻia nā mea maka PP-R maʻemaʻe e hana i nā waiwai keʻokeʻo. No ka laʻana, ʻoiai ʻo nā huahana kala ʻē aʻe i hana ʻia me nā masterbatches kala e hui pū ʻia me nā mea hana hou, nā mea ʻōpala, a me nā mea kihi, ʻo ke kala o nā huahana i hana ʻia e ka hoʻohui ʻana i nā mea hana hou, nā mea ʻōpala, a me nā mea kihi ʻaʻole palupalu a kūlike. ʻAʻole pili ke kala o ka huahana i nā mea i hoʻohana ʻia, a me nā mea ʻē aʻe. ʻAʻole ʻae ʻia nā hemahema e like me nā ʻōpū o ka ea, nā puʻupuʻu ʻālohilohi, nā ʻūhā, a me nā mea haumia.

ʻO nā mea kumu a pau no nā paipu wai PP-R maikaʻi he PP-R. (me ka ʻole o nā mea hoʻohui). Maʻemaʻe ma ke ʻano, me ka ʻili maʻemaʻe a me ka lima ʻoluʻolu. Hoʻomaʻamaʻa nā paipu PP-R. Ma keʻano laulā, ʻoi aku ka maʻalahi o nā ʻāpana ʻōpala e komo i nā haumia; ʻO ka polypropylene ka mea nui o nā paipu PP-R. ʻAno ʻino nā paipu maikaʻi ʻole, ʻaʻole hoʻi nā paipu maikaʻi. ʻO ka mea maʻamau, ua hui pū ʻia ka polyethylene ma mua o ka polypropylene.

ʻO ka mahana wili maʻamau no nā paipu PP-R ma waena o 260 a 290 ° C. E ʻoi aku ka maikaʻi o ka weld i kēia mau mahana. Hiki i ka huahana ke komo maʻalahi i ke poʻo make welding i ka wā wili inā maʻamau nā ʻāpana kuʻi. Hoʻohui ʻia, ʻaneʻane wai nā nodules fusion accumulation o ka huahana, e hōʻike ana ʻaʻole ia i hana ʻia me nā mea maka PP-R maoli.

ʻAʻole hana ʻia ka huahana mai nā mea pono PP-R maoli inā hiki i nā nodules hōʻiliʻili kuʻi ʻana ke maʻalili a paʻa koke (maʻamau i loko o 10 kekona). ʻO kēia no ka mea ʻoi aku ka ikaika o ka mālama ʻana i ka wela o ka PP-R, ʻo ia hoʻi, ʻoi aku ka lohi o ka hoʻoilo.
E nānā inā ua huki ʻia nā paipu paipu a inā ua ʻino ke anawaena o loko o ka paipu. ʻAʻole hiki ke huki ʻia ke anawaena o loko o kahi paipu PP-R maikaʻi, a ʻaʻole maʻalahi ke kulou.