ASTM A179 / ASME SA179 Heat Exchanger Tubes - BLOG

Tok i go pas

ASTM A179 / ASME SA179 i makim ol 'seamless', 'cold{2}}drawn', 'low-carbon steel paip we ol i wokim bilong givim gutpela hat na wok bilong wokim ol samting. Wantaim liklik -wol konstraksen na strongpela metalurjikal kontrol, ol dispela paip i save kamap planti taim long ol 'heat exchanger' na 'condenser' long olgeta rifaineri, petrokemikel, na pawa indastri.Octal Pipe i save saplaim ol A179/SA179 tiub bilong ol global EPC na ol ikwipmen fabriketa, i sapotim tupela 'bare tubes' na 'U-bend assemblies.

Kemikel Komposesen

Low-carbon chemistry i save strongim kol wok bilong U-bending na tube-to-tubesheet ekspansen.

Elemen	Rikwaemen (wt%)	Mining bilong wok enjiniaring
Kabon (C)	0.06–0.18	I lukautim strong bilong wokim
Manganese (Mn)	0.27–0.63	Strongim na rausim oksidesen
Fosforas (P)	Liklik o wankain olsem 0.035	I daunim 'brittleness'
Salfa (S)	Liklik o wankain olsem 0.035	Klinim insait bilong en na weldabiliti

Ol samting bilong masin

Banis	Minimum Rikwaemen	Wok bilong ol Heat Exchanger
Strong bilong 'Tensile'	Bikpela o wankain olsem 325 MPa (47 ksi)	Struktural sefti mak
Strong bilong Givim	Bikpela o wankain olsem 180 MPa (26 ksi)	Kontrolim senis long taim bilong wokim
Longpela	Bikpela o wankain olsem 35%	Em i bikpela samting long seif ekspansen
Hatnes	Liklik o wankain olsem 72 HRB	I stopim bruk taim U-bending

Ol dispela samting i mekim na ol i ken wokim gutpela wok na sevis gut insait long ol 'exchanger bundles'.

astm a179 asme sa179 heat exchanger tubes bundle in stock -octal pipe seamless cold drawn low carbon steel condenser tubes a179 sa179 -octal pipe

Wokim na Hatim Tritmen

ASTM A179 / ASME SA179 ol 'tubes' em ol i wokim long rot bilong wanpela 'controlled seamless manufacturing workflow' na bihain long 'precision cold drawing' bilong kisim ol 'dimensional tolerances' na ol gutpela intanel pes bilong mekim 'heat-transfer efficiency i kamap gutpela moa.

Gutpela wok bilong kamapim ol samting

Hollow billet → piercing → hot forming → multi-pass cold drawing

Dimensenel kontrol i mekim na minimam-wol rikwaemen i kamap stret

Kol droing i save mekim pes i kamap gutpela na insait bilong en i stap klin-em i bikpela samting long daunim pipia insait long ol 'heat exchanger'

Laspela hat tritmen

Bihain long laspela 'cold-draw pass', ol i save putim hat long ol 'tube' longBikpela o wankain olsem 1200 digri F (bikpela o wankain olsem 650 digri)long:

Lusim ol hevi we i stap yet long wok kol
Putim bek 'ductility' we i mas i stap longU-bending na tubesheet ekspansen
Mekim longpela taim straksa i stap gut aninit long ol 'cyclic thermal loads'

Kondisen na redi bilong pes

Saplaimskel-frilong holim gutpela 'thermal' pefomens
Ol pinis emklin na burr-fri, na mekim gutpela weld o mekenikel ekspansen taim ol i bungim
Dispela wok bilong wokim na wokim ol samting bilong wokim ol samting i helpim long mekim wok bilong en i stap longpela taim, gutpela wok bilong en, na gutpela wok bilong putim insait long ol 'high-density exchanger bundles'.

Inspeksen na Testing

Folem ASTM A179 na ASTM A450/A450M:

Samting bilong sekim	As tingting
Hydrostatic o NDE tes	Leak-tightness verification
Test bilong flatim	Sekim 'soundness' na 'ductility'
Flaring / Substitute test	I skelim strong bilong 'tubesheet' long skruim
Test bilong strong bilong en	Cold-wok level konfemesen
Makim na MTC trasebiliti	Sapotim ol QA riviu na projek odit

Ol bikpela samting bilong enjiniaring na baim samting

Kategori	Enjiniaring Gaidens	Wanem samting yu mas tok klia
Sais bilong Tiub	OD 3.2–76.2 mm (1/8–3 in)	OD × Minimum Wall Thickness × Length
Formabiliti	Em i gutpela long U-bend na ekspansen	Min. 'bending radius' Bikpela o wankain olsem 2-2.5 × OD
Kondisen bilong pes	Kontrol bilong pipia na pefomens bilong hat	Skel-fri wantaim ol arere we i gat proteksen
Inspeksen Level	Folem sistem kritikaliti	Hydrostatic/NDE + ductility tests
Ol pepa	Odit na bihainim lo	MTC wantaim ful trasebiliti
Pakejing na Lojistiks	Stopim korosen na ol hevi	Marine-greid ekspot proteksen

Wanpela seksen i sapotim tupeladisainnabaimol disisen.

Ol aplikesen

Ol 'shell' na 'tube heat exchanger'
Pawa-plant kondensa
Ol tren bilong mekim kol long rifaineri
Ol indastrial 'chiller' na 'air cooler'
Ol sistem bilong sakim hat bilong proses
Long 'chloride-bearing media o solwara eksposesen:
tingim 'corrosion allowance', 'coating', o ol 'apgraded alloys' olsem ASTM A213.

astm a179 heat exchanger tube ends close up bundle packaging -octal pipe

Samari

ASTM A179 / ASME SA179 ol 'seamless heat exchanger tubes' i save givim gutpela 'heat-transfer efficiency, gutpela wok bilong wokim ol samting, na gutpela wok tru insait long ol indastrial koling yunit.

Octal Pipe i save givim ol A179/SA179 'tubes' we yu ken bihainim olgeta wantaim 'U-bend fabrikesen, gutpela MTC pepa, na BV / ABS inspeksen, na mekim gut olsem ol i bihainim lo bilong ol bikpela wok bilong senisim ol samting.

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