He aha ngā rerekētanga i waenga i te DN, De, φ, PN me te SDR kua tohua ki te paipa?

DN/De/D / Φ / PN/rerekētanga i waenga i te SDRS

D: Ko te tikanga e pā ana ki te diameter o roto o te paipa, te diameter o te porowhita o roto o te pakitara o te paipa.

Ko te DN: e pā ana ki te diameter ingoa, e mōhiotia ana ko te diameter waho toharite, ehara i te diameter waho, ehara hoki i te diameter roto o te paipa, engari ko te toharite o te diameter waho me te diameter roto. He raupapa diameter paerewa tēnei o ngā paipa me ngā taputapu. He pai te whakamahi i te diameter ingoa hei whakatutuki i te paerewa o ngā wāhanga, ā, he watea mō te hoahoa, te hanga, te whakatika me te whakahaere, ā, ka whakaiti i ngā utu hanga. Mō ngā paipa, ko te DN he whakaaturanga rahi he iti iho i te diameter waho, he nui ake i te diameter roto. E rite ana ki te diameter ingoa o te paipa, ko tōna diameter waho he uara pumau, ā, ka rerekē te diameter roto i te matotoru o te pakitara.

φ: e pā ana ki te diameter o waho o te paipa, arā, ko te diameter o waho o te paipa tae atu ki te matotoru o te pakitara o te paipa. Ko te paipa maitai kore-tuinga whānui, ka whakamahia te paipa maitai porowhita hei tohu i te rahi o φ, ka tohua ki te ahua o te diameter o waho X te matotoru o te pakitara. Hei tauira, ko te φ 108 x 4 e tohu ana i te paipa he diameter o waho 108mm me te matotoru o te pakitara 4mm.

De: e pā ana ki te whānui o waho o ngā paipa. Ko te whānui o waho o ngā paipa PPR, PE me te POLYPROPYLENE ka tohua ki te De, e tohuhia ana i te nuinga o te wā i te ahua o te whānui o waho X te matotoru o te pakitara. Pērā i: De110 x 6.6.

Te whanaungatanga i waenga i a DN, De me φ:
Ka ine a De i te diameter o te pakitara o waho o te paipa; ko DN ko De tangohia te haurua o te matotoru o te pakitara ngongo; ko φ te diameter o tētahi porowhita noa.

De, DN, D, phi ō rātou whānuitanga:
De– PPR, paipa PE, polypropylene pipe diameter;
DN– te diameter ingoa o te paipa polyethylene (PVC), te paipa rino maka, te paipa hiato maitai-kirihou, te paipa maitai piauau;
D — Te whānui ingoa o te paipa raima;
ф– Me tohu te paipa maitai kore-whakarewa, te paipa whakarewa kore-whakarewa rānei ki te "diameter o waho × matotoru o te pakitara".

PN: e pā ana ki te pēhanga ingoa, e whakamahia ana hei whakaatu i te pēhanga o ngā paipa, ngā hononga paipa, ngā takirere me ētahi atu taputapu anga. Ko te tau e whai ake nei ko te reta PN kāore e tohu i te uara ine. Hei tauira, mō TE paipa tuku wai PE o PN1.0mpa, ko te 1.0 e tohu ana i te taumata pēhanga. Ko te pēhanga ingoa e pā ana ki te pēhanga mahi o te tuku wai o te paipa i te pāmahana tuarua (20℃), arā, ko te pēhanga mahi tonu mōrahi e pā ana ki te pakitara o roto o te paipa i raro i te āhua mahi noa. Ko ngā paipa tuku wai PE e whakamahia whānuitia ana e mātou ināianei kua wehea kia rima ngā taumata pēhanga 0.6, 0.8, 1.0, 1.25, 1.6.

SDR: e pā ana ki te ōwehenga rahi paerewa, te ōwehenga rahi paerewa rānei o ngā paipa. Ko te SDR i runga i te paipa whāngai PE e pā ana ki te ōwehenga i waenga i te diameter waho ingoa de me te matotoru pakitara ingoa EN o te paipa, arā, SDR=de/en. He tawhā nui tēnei hei whakahaere i te matotoru o te pakitara paipa me te whakatau i te kaha ki te tu atu i te pēhanga o roto. Hei tauira, kua tohua ki runga i te paipa PE: SDR26 PN0.6mpa, SDR21 PN0.8mpa, SDR17 PN1.0mpa, SDR13.6PN1.25mpa, SDR11 PN1.6mpa, me ētahi atu.

Ko ngā paipa kirihou he kapia hangai me ngā tāpiringa mā te whakarewa i ngā hua tukatuka whakakoi. Kei roto i ngā tāpiringa ko te plasticizer, te stabilizer, te filler, te hinu whakahinuhinu, te tae, te absorbent ultraviolet, te modifier, me ētahi atu.

Whakamahia aiputorino kirihouko: ngā paipa polyvinyl chloride mārō (PVC-U), ngā paipa polyethylene kiato teitei (PE-HD), ngā paipa polyethylene hono-whiti (PE-X), ngā paipa polypropylene copolymer matapōkere (PP-R), ngā paipa polybutene (PB), ngā kirihou hangarau propylene qing-butadiene-styrene copolymer (ABS) me ētahi atu. Ko te hanganga rauemi o ngā paipa kirihou te mea e whakatau ana i ngā āhuatanga o ngā paipa kirihou.

1) Ngā painga matua o te paipa kirihou

• He pai te pumau o ngā matū, kāore e pāngia e ngā āhuatanga taiao me ngā wāhanga reo i roto i te paipa, he pai te ātete ki te waikura.

• He iti te kawe wera, he iti te kawe wera, he ārai wera, he pai te pānga penapena pūngao.

• He pai te mahi waipēhi, he maeneene te pakitara o roto o te paipa, he iti te tauwehenga ātete, he uaua ki te whakawhanui, kāore te horahanga rere i roto i te paipa e rerekē ana i te wā, ā, he iti te tūponotanga ka āraia te paipa.

• Ki te whakatauritea ki te paipa whakarewa, he iti te matotoru, he māmā ngā rauemi, he watea te kawe me te tāuta, ā, he ngāwari te tiaki.••

• He mahi piko māori, he mahi piko matao rānei, ka taea te whakamahi i te tuku koiri hei whakaiti i te maha o ngā hononga paipa.

2) Te awe o te mahi a ngā paipa kirihou

• He tino teitei ngā āhuatanga ā-ringa o te PVC-u, PP me te ABS, ā, e kiia ana he "ngā ngongo pakari" he pai ake te tāutanga tuwhera. Engari, ko te PE, PE-X, PB he "ngā ngongo ngāwari" e tika ana mō te paninga pouri.

• Mā te ātete pāmahana me te wera o ngā paipa kirihou ka taea anake te whakamahi i te PVC-U, PE, ABS mō ngā paipa wai matao, ko te PE-X, PP, PB ia ka taea te whakamahi hei paipa wai wera. Mēnā he pūnaha tuku wai wera te whare, ā, ko te whakamahinga o te ātete wera ōrite o ngā paipa wera me te matao ka noho hei tohu matua.

• Nā te nui o te tauwehenga whakawhanui wera o ngā paipa kirihou, inā koa he paipa wai wera i roto i te paipa kirihou, he nui ake te hononga ngāwari, ngā hononga whakawhanui, ngā piko me ētahi atu tikanga whakamāmā wera. Ko te PE, te PP me ētahi atu polyolefin te mea tino nui. Ki te kore te hanganga me te tāutanga e aro nui ki tēnei, ā, e mahi ana i ngā tikanga hangarau e tika ana, ka ngāwari te pā ki te hononga nā te mea ka toia te hononga whakawhanui.

• Nā te iti o te kawe wera, he tino pai te mahi whakamahana o te paipa kirihou, ā, ka taea te whakaiti i te matotoru o te paparanga whakamahana, te kore rānei o te whakamahana. Ko te whakataurite i te whakamahana i waenga i ngā paipa kirihou rerekē ehara i te mea e pā ana ki te kawe wera anake, engari e pā ana hoki ki te matotoru o te pakitara o ō rātou paipa.