Boholo ba Pipe ka Lebitso

Nominal Pipe size ke eng?

Boholo ba Pipe ka Lebitso(NPS)ke Amerika Leboea sete ea boholo bo tloaelehileng ba liphaephe tse sebelisetsoang likhatello le mocheso o phahameng kapa o tlase. Lebitso NPS le ipapisitse le sistimi ea pejana ea "Iron Pipe Size" (IPS).

Mokhoa oo oa IPS o thehiloe ho khetholla boholo ba liphaephe. Boholo bo ne bo emela bophara ba ka hare ba phala ka lisenthimithara. Pipe ea IPS 6 ″ ke eo bophara ba eona bo ka hare bo ka bang lisenthimithara tse 6. Basebelisi ba ile ba qala ho bitsa phala e le 2inch, 4inch, 6inch pipe joalo-joalo. Ho qala, boholo ba phala ka 'ngoe bo ile ba hlahisoa hore bo be le botenya bo le bong, boo hamorao bo ileng ba bitsoa standard (STD) kapa boima bo tloaelehileng (STD.WT.). Bophara ba ka ntle ba phala bo ne bo leka-lekana.

E le litlhoko tsa indasteri tse sebetsanang le maro a phahameng a khatello, liphaephe li entsoe ka marako a teteaneng, a seng a tsejoa e le matla a eketsehileng (XS) kapa a boima bo eketsehileng (XH). Litlhoko tse phahameng tsa khatello li ile tsa eketseha le ho feta, ka liphaephe tse teteaneng tsa marako. Ka lebaka leo, liphaephe li entsoe ka marako a mabeli a matla (XXS) kapa marako a boima (XXH), ha bophara bo tloaelehileng ba ka ntle bo sa fetohe. Hlokomela hore sebakeng sena sa marang-rang feela lipeheloXS&XXSdi sebedisoa.

Kemiso ea Pipe

Kahoo, ka nako ea IPS ho ne ho sebelisoa mabota a mararo feela. Ka March 1927, American Standards Association e ile ea hlahloba indasteri 'me ea theha tsamaiso e khethollang botenya ba marako ho latela mehato e menyenyane pakeng tsa boholo. Lebitso le tsejoang e le boholo ba liphaephe ka lebitso le nkile sebaka sa boholo ba phala ea tšepe, le kemiso ea nako (SCH) e ile ea qaptjoa ho hlalosa botenya ba lerako la phala. Ka ho kenyelletsa linomoro tsa kemiso ho litekanyetso tsa IPS, kajeno re tseba mefuta e mengata ea marako, e leng:

SCH 5, 5S, 10, 10S, 20, 30, 40, 40S, 60, 80, 80S, 100, 120, 140, 160, STD, XS le XXS.

Boholo ba peipi ka lebitso (NPS) ke moqapi ea se nang moeli oa boholo ba phala. E bonts'a boholo ba phala e tloaelehileng ha e lateloa ke nomoro e khethiloeng ea boholo bo itseng ntle le letšoao la inch. Ka mohlala, NPS 6 e bontša phala eo bophara ba eona bo ka ntle e leng 168.3 mm.

NPS e amana haholo le bophara ba ka hare ka lisenthimithara, 'me NPS 12 le pipe e nyenyane e na le bophara bo ka ntle ho feta moqapi oa boholo. Bakeng sa NPS 14 le ho feta, NPS e lekana le 14inch.

Bakeng sa NPS e fanoeng, bophara ba kantle bo lula bo sa fetohe 'me botenya ba lebota bo eketseha ka palo e kholo ea kemiso. Botenya ba ka hare bo tla itšetleha ka botenya ba lebota la phala le boletsoeng ke nomoro ea kemiso.

Kakaretso:
Boholo ba phala bo hlalositsoe ka linomoro tse peli tse se nang lehlakore,

• boholo ba peipi ea lebitso (NPS)
• nomoro ea lenane (SCH)

’me kamano e teng pakeng tsa linomoro tsena ke eona e khethollang bophara bo ka hare ba phala.

Stainless Steel Pipe litekanyo tse khethiloeng ke ASME B36.19 e koahelang bophara bo ka ntle le botenya ba Shejule ea lebota. Hlokomela hore botenya ba lebota bo sa hloekang ho ASME B36.19 kaofela bo na le sehlomathiso sa "S". Boholo bo se nang suffix "S" ke ASME B36.10 e reretsoeng liphaephe tsa carbon steel.

Mokhatlo oa Maemo oa Machaba (ISO) o boetse o sebelisa mokhoa o nang le moqapi o se nang moeli.
Diameter nominal (DN) e sebelisoa tsamaisong ea metric unit. E bontša boholo ba phala e tloaelehileng ha e lateloa ke nomoro e khethehileng ea ho khetholla boholo ntle le letšoao la millimeter. Ka mohlala, DN 80 ke tlhaloso e lekanang le ea NPS 3. Ka tlaase ho tafole e nang le litekanyo tsa boholo ba liphaephe tsa NPS le DN.

Ela hloko: Bakeng sa NPS ≥ 4, e amanang le DN = 25 e atisoa ka nomoro ea NPS.

Na hona joale ke eng "ein zweihunderter Rohr"?. Majeremane a bolela ka hore pipe ea NPS 8 kapa DN 200. Tabeng ena, Madache a bua ka "8 duimer". Ke labalabela ho tseba hore na batho ba linaheng tse ling ba bontša peipi joang.

Mehlala ea OD ea sebele le ID

Li-diameter tsa 'nete tsa kantle

• NPS 1 ea sebele OD = 1.5/16″ (33.4 mm)
• NPS 2 OD ea sebele = 2.3/8″ (60.3 mm)
• NPS 3 OD ea sebele = 3½” (88.9 mm)
• NPS 4 OD ea sebele = 4½” (114.3 mm)
• NPS 12 OD ea sebele = 12¾” (323.9 mm)
• NPS 14 OD ea sebele = 14″(355.6 mm)

Bophahamo ba 'nete ba kahare ba phala ea 1 inch.

• NPS 1-SCH 40 = OD33,4 limilimithara - WT. 3,38 limilimithara - ID 26,64 limilimithara
• NPS 1-SCH 80 = OD33,4 limilimithara - WT. 4,55 limilimithara - ID 24,30 limilimithara
• NPS 1-SCH 160 = OD33,4 limilimithara - WT. 6,35 limilimithara - ID 20,70 limilimithara

Joalo ka ha ho hlalositsoe kaholimo, ha ho bophara ba kahare bo lumellanang le 'nete ea 1″ (25,4 mm).
Bophara ba ka hare bo khethoa ke botenya ba lerako (WT).

Lintlha tseo u lokelang ho li tseba!

Kemiso ea 40 le 80 e atamelang STD le XS 'me hangata e tšoana.
Ho tloha ho NPS 12 le ka holim'a botenya ba lerako pakeng tsa kemiso ea 40 le STD li fapane, ho tloha ho NPS 10 le ka holimo ho botenya ba lerako pakeng tsa kemiso ea 80 le XS li fapane.

Kemiso ea 10, 40 le 80 maemong a mangata li tšoana le kemiso ea 10S, 40S le 80S.
Empa hlokomela, ho tloha ho NPS 12 - NPS 22 botenya ba marako maemong a mang bo fapane. Liphaephe tse nang le suffix "S" li na le li-ticknees tse tšesaane tsa lebota.

ASME B36.19 ha e koahele boholo ba liphaephe tsohle. Ka hona, litlhoko tsa boholo ba ASME B36.10 li sebetsa ho phala ea tšepe e sa hloekang ea boholo le mananeo a sa kengoang ke ASME B36.19.