Flanges are an important component in piping systems, used to join pipes, valvụ, nfuli, na akụrụngwa ndị ọzọ. When selecting flanges, two main standards must be considered – DN (Dimension Nominal) and ANSI (American National Standards Institute). While both are common, there are some key differences to understand when choosing between DN vs ANSI flanges. This article will compare dn vs ansi flanges in detail to help you make the right choice.
Okwu mmalite
Flanges provide a method to connect piping and transfer fluids or gases by bolting together with gaskets between them to seal the connection. They are used in many applications from the oil and gas industry to food and beverage processing, power plants, na ndị ọzọ.
There are two main international standards for flange dimensions and ratings:
- DN – Dimensional Nominal (European/ISO standard)
- ANSI – American National Standards Institute (American standard)
Ọ bụ ezie na ha abụọ na-agbaso ụkpụrụ nhazi ahụ, enwere ọdịiche na akụkụ, ọkwa nrụgide, ihu ihu, na ụkpụrụ bolt na-eme ka ha ghara ịgbanwe. Ịghọta dn vs ansi flanges ga-eme ka ị họrọ flanges ziri ezi maka sistemụ ọkpọkọ gị.
Isi ọdịiche dị n'etiti DN na ANSI Flanges
Mgbe ị na-enyocha dn vs ansi flanges, ndị na-esonụ bụ isi ihe atụnyere:
Akụkụ
- Flange DN gbadoro ụkwụ na nha ọkpọkọ aha ya na mmụba dayameta nkịtị.
- Flange ANSI nwere nha inch ọkọlọtọ na-emetụtaghị nha ọkpọkọ ozugbo.
Nke a pụtara DN 100 flange kwekọrọ na ọkpọkọ 100mm, ebe ANSI 4" flange nwere ihe ruru. 4.5”. Flange DN na-eji metrik ebe ANSI na-eji nkeji ala eze.
Ntụle nrụgide
- Flanges DN na-eji ọkwa PN – nrụgide kachasị na BAR na okpomọkụ nyere.
- Flange ANSI na-eji ọkwa klaasị – nrụgide psi kacha elu dabere na ike ihe.
Ọmụmaatụ, a DN150 PN16 flange = ANSI 6" 150# flange na nrụgide njikwa ike.
Ụdị ihu
- Flanges DN na-eji ihu B1 ma ọ bụ B2 ihu.
- Flange ANSI na-eji ihu ewelitere (RF) ma ọ bụ Ihu dị larịị (FF) ihu ihu.
B1 yiri RF, ebe B2 dị ka FF. Ihu ihu ga-adabarịrị maka akara nke ọma.
Bolt okirikiri
- DN bolt oghere dị dabere na ọnụ ala dayameta.
- okirikiri ANSI bolt gbadoro ụkwụ na ọkwa klaasị flange.
Oghere Bolt agaghị adaba n'etiti ụdị abụọ ahụ.
Akụrụngwa
- Flange DN na-eji ihe dabere metrik – P250GH, 1.4408, wdg.
- ANSI na-eji akara ala eze/US – A105, A182 F316L, wdg.
Akụrụngwa ga-adarịrị ka ijikwa ọnọdụ okpomọkụ na nrụgide achọrọ.
Ka i si hụ, dn vs ansi flanges nwere ọtụtụ ọdịiche na-eme ka ha ghara ịgbanwe. Ịgwakọta ha abụọ na-ebutekarị ntapu, mmebi, na okwu ndị ọzọ.
DN vs ANSI Flanges Size Chart
Iji tụnyere nha dn vs ansi flanges nkịtị, rụtụ aka na chaatị ntụaka aka a:
| Ihe atụ nke DNA Flange | Nha ọkpọkọ ọnụ | ANSI Flange |
|---|---|---|
| DN15 | 15mm | 1⁄2” |
| DN20 | 20mm | 3⁄4" |
| DN25 | 25mm | 1” |
| DN32 | 32mm | 11⁄4" |
| DN40 | 40mm | 11⁄2” |
| DN50 | 50mm | 2” |
| DN65 | 65mm | 21⁄2” |
| DN80 | 80mm | 3” |
| DN100 | 100mm | 4” |
| DN125 | 125mm | 5” |
| DN150 | 150mm | 6” |
| DN200 | 200mm | 8” |
| DN250 | 250mm | 10” |
| DN300 | 300mm | 12” |
| DN350 | 350mm | 14” |
| DN400 | 400mm | 16” |
Nke a na-ekpuchi ụdị flanges dn vs ansi ndị a na-ahụkarị ruo 16". Ọ na-enye ntule dị ka naanị – kpọmkwem akụkụ nwere ike ịdị iche. Kwenye nkọwapụta tupu ịgbanwee flange ANSI na DN.
DN vs ANSI Flange FAQ
Ụfọdụ ajụjụ ugboro ugboro gbasara dn vs ansi flanges gụnyere:
Ọ bụ DNA na ANSI flange mgbanwe?
Mba, Enweghị ike ịgbanwe flange DN na ANSI ozugbo n'ihi ọdịiche dị na akụkụ, ogo, ihu ihu, na ihe. Ịgbalị ijikọ flange DN na ANSI flange ga-ebute enweghị nhazi.
Ị nwere ike iji flange DN na ọkpọkọ ANSI?
Mba, Akụkụ dị iche iche pụtara na flange DN agaghị ejikọta ya na nha ọkpọkọ ANSI nke ọma. Emebere ha dị ka sistemu iji dakọtara flange DN na ọkpọkọ DN, na ANSI nwere ANSI.
Kedu otu esi atụgharị DN ka ọ bụrụ nha flange ANSI?
Enweghị ntụgharị ozugbo n'etiti nha ọkpọkọ DN vs ANSI. Chaatị dị n'elu na-enye ihe nhata maka nha flange ọnụ DN na ANSI. Lelee nha n'ezie mgbe niile – akụkụ nwere ike ịdị iche n'ofe ụkpụrụ.
Ekwesịrị m iji flange DN ma ọ bụ ANSI?
Ọ bụrụ na sistemụ ọkpọkọ gị nọ n'ọnọdụ iji ụkpụrụ ISO (Europe, Etiti ọwụwa anyanwụ, Asia), O yikarịrị ka achọrọ flange DNA. Maka North America na-eji ụkpụrụ ANSI, Flange ANSI ga-abụ nhọrọ nkịtị. Jiri ọkọlọtọ dabara na pipụ gị ndị ọzọ maka ịdị mma na ịrụ ọrụ nke ọma.
Ị nwere ike mechie flanges DN na ANSI ọnụ?
I kwesịghị ikpokọta ọnụ flanges DN vs ANSI enweghị atụ. Oghere bolt dị iche iche agaghị adabara, na-ebute gaskets na-ekwesịghị ekwesị, ntapu, na enwere ike imebi n'okpuru nrụgide.
Mmechi
Mgbe a bịara n'ịhọrọ flanges, ịghọta isi ihe dị iche n'etiti ụkpụrụ DN vs ANSI dị oke mkpa. Flanges na-adakọghị ọnụ nwere ike ibute ntapu, mmebi akụrụngwa, na nrụzi dị oke ọnụ. Site n'ịtụle akụkụ, ọkwa nrụgide, ihu ihu, na ihe, ị nwere ike hụ na ị na-ahọrọ flanges DN ma ọ bụ ANSI dakọtara oge ọ bụla.
Na akụrụngwa gburugburu ụwa, Jmet Corp na-enye ma DN na ANSI flanges iji gboo mkpa mpaghara. Kpọtụrụ anyị taa iji kparịta ngwa gị wee nweta enyemaka ịhọrọ flanges dị mma. Ndị ọkachamara anyị nwere ike ịgafe gị site na ụkpụrụ dn vs ansi flanges wee nye nnyefe a pụrụ ịdabere na ya kpọmkwem ihe ịchọrọ. Nweta flange ziri ezi iji mee ka ọrụ gị na-aga nke ọma.