Anawaena paipu De, DN, d ф Manaʻo
De、DN、d、 ф ʻO ka laulā hōʻike like ʻole o
De -- ke anawaena o waho o ka PPR, ka paipu PE a me ka paipu polypropylene
DN -- Ke anawaena inoa o ka paipu polyethylene (PVC), paipu hao hao, paipu kila kila a me ka paipu kila galvanized
D -- ke anawaena inoa o ka paipu kalaka
ф-- ʻO ф 100:108 X 4 ke anawaena o ka paipu kila ʻole.
ʻOkoʻa ma waena o ke anawaena paipu DE a me DN
1. DN e pili ana i ke anawaena inoa o ka paipu, aole ka anawaena o waho a me ke anawaena o loko (pono e pili me na wae Pelekane ma ka hoomaka mua o ka ulu ana o ka pipeline, a ua hoohana mau ia e wehewehe i na paipu kila galvanized).ʻO kāna pilina pili me nā ʻāpana Pelekane penei:
4/8 iniha: DN15;
6/8 iniha: DN20;
1 iniha paipu: 1 iniha: DN25;
ʻElua iniha paipu: 1 a me 1/4 iniha: DN32;
Inch hapalua paipu: 1 a me 1/2 iniha: DN40;
ʻElua iniha paipu: 2 iniha: DN50;
ʻEkolu iniha paipu: 3 'īniha: DN80 (i hōʻailona pū ʻia ʻo DN75 ma nā wahi he nui);
ʻEhā ʻīniha paipu: 4 iniha: DN100;
2. ʻO De ka mea nui e pili ana i ke anawaena o waho o ka paipu (ka mea maʻamau i kaha ʻia e De, pono e kaha ʻia ma ke ʻano o ke anawaena o waho X ka mānoanoa o ka paia)
Hoʻohana nui ʻia e wehewehe: nā paipu kila ʻole, PVC a me nā paipu plastik ʻē aʻe, a me nā paipu ʻē aʻe e pono ai ka mānoanoa o ka pā.
ʻO ka lawe ʻana i ka paipu kila welded galvanized ma ke ʻano he laʻana, DN a me De marking method penei:
DN20 De25X2.5mm
DN25 De32X3mm
DN32 De40X4mm
DN40 De50X4mm
Ua maʻa mākou i ka hoʻohana ʻana i ka DN e hōʻailona ai i nā paipu kila welded, a ʻaʻole i hoʻohana pinepine iā De e hōʻailona i nā paipu me ka ʻole o ka mānoanoa o ka pā;
Akā ʻo ka mākaʻikaʻi ʻana i nā paipu plastik kekahi mea ʻē aʻe;E pili pū ana i nā maʻamau o ka ʻoihana.Ma ke kaʻina hana maoli, ʻo ka 20, 25, 32 a me nā pipeline ʻē aʻe a mākou e kapa nei e pili wale iā De, ʻaʻole DN.
Wahi a ka ʻike hana ma ka pūnaewele:
a.ʻO nā ʻano hoʻohui o nā mea paipu ʻelua ʻaʻole ia he mea ʻē aʻe ma mua o ka hoʻopili ʻana i ke kaula a me ka pili flange.
b.Hiki ke hoʻopili ʻia ka paipu kila galvanized a me ka paipu PPR e nā ʻano ʻelua i luna, akā ʻoi aku ka maʻalahi o ke kaula wili no nā paipu liʻiliʻi ma mua o 50, a ʻoi aku ka hilinaʻi o ka flange no nā paipu ʻoi aku ka nui ma mua o 50.
c.Inā hoʻopili ʻia nā paipu metala ʻelua i hana ʻia me nā mea like ʻole, e noʻonoʻo ʻia paha ka hopena o ke kelepona galvanic, inā ʻaʻole e wikiwiki ʻia ka pōʻino o nā paipu metala ikaika.ʻOi aku ka maikaʻi o ka hoʻohana ʻana i nā flanges no ka hoʻopili ʻana, a me ka hoʻohana ʻana i nā mea hoʻokaʻawale ʻana i nā mea hoʻokaʻawale i nā metala ʻelua, me nā bolts, me nā gaskets e pale aku i ka hoʻopili ʻana.
ʻO ka ʻokoʻa ma waena o DN, De a me Dg
DN Nominal anawaena
De waho anawaena
Dg anawaena gong.Hana ʻia ʻo Dg diameter gong ma Kina, me nā ʻano Kina, akā ʻaʻole hoʻohana hou ʻia
a.Nā ʻano hana hōʻailona like ʻole no nā paipu like ʻole:
1. No ka wai kinoea lawe kila paipu (galvanized a non galvanized), hoolei hao paipu a me na paipu 'ē aʻe, ke anawaena paipu e hōʻike 'ia e ka nominal anawaena DN (e like me DN15, DN50);
2. Seamless kila paipu, welded kila paipu (pololei a i ole spiral seam), keleawe paipu, kuhiliʻole kila paipu a me ka 'ē aʻe paipu, ka paipu anawaena D × Wall mānoanoa (e like me D108 × 4、D159 × 4.5, etc.) ;
3. No nā paipu i hoʻoikaika ʻia (a i ʻole nā mea hoʻopaʻapaʻa), nā paipu pālolo, nā paipu seramika kūpaʻa i ka waikawa, nā paipu liner a me nā paipu ʻē aʻe, pono e hōʻike ʻia ke anawaena o ka paipu e ke anawaena o loko d (e like me d230, d380, etc.);
4. No nā paipu plastik, pono e hōʻike ʻia ke anawaena paipu e like me ke kūlana huahana;
5. Ke hoʻohana ʻia ka anawaena inoa DN e hōʻike i ke anawaena paipu i ka hoʻolālā, pono e loaʻa kahi papa hoʻohālikelike ma waena o ka DN nominal anawaena a me nā kikoʻī huahana pili.
b.Ka pilina o DN, De a me Dg:
ʻO De ke anawaena o ka paia waho o ka paipu
ʻO DN ka De emi i ka hapalua o ka mānoanoa o ka paia paipu
ʻAʻole hoʻohana ʻia ʻo Dg
1 ʻO ke anawaena paipu ma ka mm.
2 E hoʻokō ka ʻōlelo o ke anawaena paipu i kēia mau ʻōlelo:
1 No nā paipu kila hoʻoili kinoea wai (galvanized a non galvanized), hoʻolei ʻia nā paipu hao a me nā paipu ʻē aʻe, pono e hōʻike ʻia ke anawaena paipu e ka anawaena nominal DN;
2 Paipu kila maʻemaʻe, paipu kila welded (seam pololei a i ʻole spiral seam), paipu keleawe, paipu kila kuhiliʻole a me nā paipu ʻē aʻe, ʻo ke anawaena o ka paipu ke anawaena o waho × Wall mānoanoa;
3 No nā paipu hoʻopaʻa ʻia (a i ʻole nā paipu), nā paipu pālolo, nā paipu seramika kūpaʻa i ka waikawa, nā paipu liner a me nā paipu ʻē aʻe, pono e hōʻike ʻia ke anawaena paipu e ke anawaena o loko d;
4 No nā paipu plastik, pono e hōʻike ʻia ke anawaena paipu e like me ke kūlana huahana;
5 Ke hoʻohana ʻia ka DN nominal diameter e hōʻike i ke anawaena paipu i ka hoʻolālā, e hāʻawi ʻia kahi papa hoʻohālikelike ma waena o ka DN nominal diameter a me nā kikoʻī huahana pili.
Nā paipu polyvinyl chloride unplasticized no ke kūkulu ʻana i ka wai - de (nominal waho anawaena) no ka kikoʻī × E (nominal wall thickness) ʻo ia hoʻi (GB 5836.1-92).
ʻO nā paipu Polypropylene (PP) no ka hoʻolako wai × E kū no (nominal outer diameter × Wall mānoanoa)
ʻO ka hōʻailona ʻana i nā paipu plastik ma nā kiʻi ʻenekinia
Ka nui anana metric
I pani ʻia e DN
ʻO ka mea maʻamau i kapa ʻia ʻo "nominal size", ʻaʻole ia ke anawaena o waho o ka paipu a i ʻole ke anawaena o loko o ka paipu.ʻO ka awelika o ke anawaena o waho a me ke anawaena o loko, i kapa ʻia ʻo ke anawaena o loko.
No ka laʻana, ʻo ka hōʻailona metric (mm dimension nui) o ka paipu plastik me ke anawaena o waho o 63mm DN50
Nui ana metric ISO
E lawe iā Da e like me ke anawaena o waho o ka paipu PVC a me ka paipu ABS
E lawe iā De e like me ke anawaena o waho o ka paipu PP a me ka paipu PE
No ka laʻana, ka hōʻailona metric o ka paipu plastik me ke anawaena o waho o 63mm (mm ka nui)
Da63 no ka paipu PVC a me ka paipu ABS
Ka manawa hoʻouna: Nov-07-2022
