Boiler Pipe a Wɔde Yɛ Nneɛma

Boiler Pipe a Wɔde Yɛ Nneɛmayɛ dade paipu a ɛnyɛ den a wɔayɛ no titiriw ama ɔhyew a ɛkorɔn ne nhyɛso a ɛkorɔn-nhyɛso som.Boiler paipu a wɔsan frɛ no Chrome-Moly Pipe (Chromium-Molybdenum Alloy Steel Pipe) ade no taa yɛCr–Mo a ɛba fam-dade a wɔde afrafrawɔayɛ ama high-temperature/high-pressure service, baabi a creep ahoɔden ne oxidation resistance hwɛ asetena mu ahotoso so. Wɔ nneyɛe mu no, "boiler pipe" adetɔ yɛ grade-driven (sɛ nhwɛso no, P11/P22/P91), efisɛ alloy nhyehyɛe + ɔhyew ayaresa kyerɛ bere tenten-bere adwumayɛ wɔ steam ne ɔhyew nsu asɛyɛde ase .

Ɛdenam chromium (Cr) ne molybdenum (Mo) a wɔde ka dade no ho so no, saa nsu afiri yi ma ahoɔden a ɛda nsow a ɛkorɔn-ɔhyew, creep resistance, oxidation resistance, ne corrosion resistance. Wɔde di dwuma kɛse wɔ nnwinnade a ɛho hia a wɔde di nsu a ɛyɛ hyew, nsu a ɛyɛ hyew, ne nneɛma a ɛporɔw ho dwuma, te sɛ anyinam ahoɔden afiri a wɔde yɛ nsu a ɛyɛ hyew, petrochemical a wɔde yɛ ɔhyew, ɔhyew a wɔde sesa, ne nhyɛso nsu afiri mu.
Esiane sɛ Octal Pipe anya mfe pii wɔ wiase nyinaa adwumayɛ mu nneɛma a wɔde ma mu nti, ɛyɛ na ɛde boiler paipu ahorow ma a ɛne ASTM, ASME, DIN, EN gyinapɛn ahorow hyia koraa. Grades kata P1–P92 ne P122, hwɛ hu sɛ ano aduru ma biribiara fi amanne kwan so boilers kosi advanced ultra-supercritical units.

• ASTM A335 / ASME SA335 na ɛwɔ hɔ: Ferritic alloy dade seamless paipu ma soro - ɔhyew som
• ASTM A213 / ASME SA213 na ɛwɔ hɔ: Seamless alloy dade paipu ma boiler ne superheater dwumadie
• DIN EN 10216-2: Seamless dade nsukorade ma nhyɛso atirimpɔw ahorow

Abasobɔde a Wɔtaa De Di Dwuma & Wɔde Di Dwuma:

• P1, P2– Low-alloy grades ma medium ɔhyew som
• P11, P12, P22– Wɔde di dwuma kɛse wɔ tumi & petrochemical high-temperature steam lines
• P5, P9, P21– Enhanced corrosion resistance ma ahwehwɛde nnuru atwa yɛn ho ahyia
• P91, P92, P122– Advanced high-performance grades ma ultra-supercritical boilers a ɛwɔ nkwa nna tenten ne ahoɔden a ɛkorɔn

Boiler Pipe Specifications (Kɛse, Nhyehyɛe, Awiei & Sɔhwɛ) .

Wɔ adwuma no ho nkrataa mu no, ."boiler tube dade grade".mpɛn pii no, ɛkyerɛASTM A213 na ɛwɔ hɔtube grades, bere a"boiler paipu" .a wɔtaa de twe adwene si soASTM A335 na ɛwɔ hɔpaipu mu nkyerɛwde ahorow. A213 kata seamless alloy boiler/superheater/heat-exchanger tubes, na A335 kata seamless ferritic alloy-dade paipu ma high-temperature service-fam nneɛma mmusua, nanso wɔakyerɛ no soronko wɔ BOMs ne nhwehwɛmu packages.

Sɛnea ɛbɛyɛ na woakwati sɛ wobɛma abasobɔde mu ayɛ basaa wɔ adetɔ ne nneɛma a wɔde ma no mu no, fa mmara a mfaso wɔ so yi di dwuma:

Mmara 1 - Fa grade din no hyia adeɛ no su:twerɛT-abasobɔde ahorowma A213 tube nneɛma neP-abasobɔde ahorowma A335 piping nneɛma. Wei siw "nneɛma a ɛteɛ, adansedi krataa a ɛnteɛ" a wɔpow wɔ EPC nhwehwɛmu mu no ano.

Mmara 2 - Fa cross-references di dwuma sɛ akwankyerɛ nkutoo, ɛnyɛ nea wɔde besi ananmu:nnwuma a wɔtaa huP11 ↔ T11neP22 ↔ T22sɛ ɔsom abusua koro no ara (pipe vs tube designation), nanso ɛsɛ sɛ PO no da so ara frɛ gyinapɛn ne product form a ɛteɛ.

Mmara 3 - Mfa seamless tube vs seamless pipe ahwehwɛde nfrafra:A213 tube nneɛma taa bata heater/boiler coil fabrication mmara ne tighter surface/ID ahwehwɛde ahorow ho, bere a A335 piping nneɛma taa twe adwene si nhyɛso hye ne piping mmara a wodi so so.

Mmara 4 - Grade paw fa bere tenten-bere tenten a ɛkorɔn-ɔhyew ahoɔden ho:a ɛkorɔn-creep grades te sɛP91/P92wɔtaa kyerɛ bere a nhyehyɛe no hwehwɛ ahoɔden a eye kyɛn so bere tenten-wɔ ɔhyew a ɛkɔ soro mu, ɛnyɛ "aba a ɛkɔ soro" kɛkɛ. Si grade pɔtee ne ɔhyew ayaresa tebea a code/spec no hwehwɛ no so dua.

Mmara 5 - Fa nhwehwɛmu/ɔhyew ayaresa a wɔde ahyɛ mu no ka, ɛnyɛ abasobɔde no nko:wɔ boiler pipe material packages ho no, adetɔfo taa hia pefeeyɛ wɔɔhyew a wɔde sa yare tebeaneNDT kwan a wɔfa so yɛ adwuma(per project ITP) efisɛ eyinom nya gye a wogye tom wɔ ɔhyew a ɛkorɔn-ɔhyew som mu so nkɛntɛnso tẽẽ.

Mmara 6 - Sɛ nnwinnadeɛ a wɔahyehyɛ no ka sɛ "tube," mfa "pipe" nsi ananmu (ne nea ɛne no bɔ abira):sɛ mpo nsusuwii ahorow no te sɛ nea, gyinapɛn/adansedi kwan no yɛ soronko na ebetumi akanyan nea ɛnhyia wɔ bere a wogye no mu.

Adetɔ ho afotu:Sɛ wode RFQs remena a, fa line item nsɛmfua no ka ho sɛnea ɛda adi wɔ nnwinnade no mu pɛpɛɛpɛ (sɛ nhwɛso no, "ASTM A213 T22 boiler tube" anaa "ASTM A335 P22 boiler pipe"), afei fa OD×WT, ne tenten, ne nkrataa a wɔhwehwɛ ka ho-eyi ne ɔkwan a ɛyɛ ntɛm sen biara a wobɛfa so akwati adansedi a ɛnhyia bere a wɔayi nneɛma no adi.

• Exceptional High-Ɔhyew AhoɔdenEsiane Cr-Mo alloy reinforcement nti, Boiler Pipes tumi kura ahoɔden ne rigidity a ɛyɛ den wɔ 600℃ne nea ɛboro saa, a ɛko tia ɔhyew a ɛsɛe. Wei hwɛ ma ɛyɛ adwuma bere tenten, ahobammɔ, na ɛyɛ pintinn wɔ nhyɛso kɛse-nsuo a ɛyɛ hyew ne nsuo a ɛyɛ hyew dwumadie ase.
• Creep Resistance & Ɔsom Nkwa NtrɛwmuPlastic deformation (creep) wɔ bere tenten a ɛkorɔn-ɔhyew ne nhyɛso kɛse-nhyɛso tebea mu yɛ huammɔdi kwan a ɛtaa ba. Chrome-Moly paipu, a Cr-Mo ratios a ɛyɛ papa ne ɔhyew ayaresa, da creep resistance a ɛkyɛn so adi, na ɛma wotumi de nnɔnhwerew mpempem pii kɔ so som a dimensional instability. Eyi ma adwuma a wɔto mu a wɔanhyɛ da ayɛ ne ɛka a wɔbɔ wɔ nsiesie ho no so tew.
• Chromium (Cr) a Ɛko Tia Oxidation & Corrosion a Ɛkorɔn .ɛyɛ oxide a ɛyɛ den a ɛbɔ ho ban, na ɛma oxidation a ɛba nsuonwini ne mframa a ɛyɛ hyew mu no so tew; Molybdenum (Mo) ma ahoɔden a ɛko tia sulfur- ne chlorine-a ɛwɔ nsɛm ho amanneɛbɔ mu no yɛ kɛse. Eyi ma nsu afiri no tumi yɛ adwuma kyɛ wɔ mmeae a emu yɛ den te sɛ anyinam ahoɔden afiri, afiri a wɔde yɛ ɔhyew, ne nnuru a wɔde yɛ nneɛma.
• Weldability & Fabrication a ɛkyɛn so a ɛne no hyiane automated welding, on-site welding, ne filler akwan pii, hwɛ hu sɛ nkwaa a ɛyɛ den na sintɔ-enni. Ɛnam mfiri a wɔde yɛ adwuma yie (bending, cutting, beveling) nti, saa paipu yi tumi sesa kɛseɛ ma ɛne nhyehyɛeɛ nhyehyɛeɛ a ɛyɛ den ne custom-engineered equipment.
• Wide Grade Range & Amanaman Ntam Gyinapɛn Efi P1/P2sikasɛm mu ano aduru a ɛfa P91/P92 nkwa tenten-nkwa akwan a ɛkɔ anim ho, wobetumi apaw abasobɔde ahorow a egyina ɔhyew, nhyɛso, ne mfinimfini su so, a ɛkari pɛ wɔ adwumayɛ ne ɛka ho. Wɔagye atom koraa sɛ ASTM, ASME, EN, DIN, saa nneɛma yi yɛ nea wogye tom ntɛm ara wɔ wiase nyinaa nnwuma mu.
• Asetra mu Ka a Wɔayɛ no YiyeƐwom sɛ sika a wɔde hyɛɛ mu mfiase no dɔɔso sen carbon dade de, nanso Chrome-Moly Boiler Pipes de nkwa nna tenten, nsiesie kyinhyia kakraa bi, ne nnwinnade a ɛyɛ adwuma yiye, na ɛma ɛka a wɔbɔ wɔ ne wurayɛ ho nyinaa (TCO) so tew kɛse. Wɔfata titiriw ma anyinam ahoɔden a wɔyɛ, nea wɔde yɛ nneɛma foforo, ne ahoɔden adwumayɛbea ahorow a bere a wɔde yɛ adwuma ne ahotoso ho hia kɛse no.

Chrome-Moly Boiler Pipes adwumayɛ a ɛkorɔn no fi alloy nhyehyɛe mu.

• Chromium (Cr) a wɔde yɛ nneɛma .ɛma oxidation ne corrosion a ɛko tia
• Nneɛma a wɔfrɛ no Molybdenum (Mo) .ɛma ahoɔden a ɛkorɔn-ɔhyew ne creep resistance tu mpɔn
• Karbon (C), Manganese (Mn), ne Silicon (Si) .wɔhyɛ wɔn so denneennen
• Nneɛma a wɔde kyerɛw nneɛma(V, Nb, N, ne nea ɛkeka ho) wɔ adesua a ɛkorɔn mu (P91, P92) ma denhyɛ ne ahoɔden a ɛkyɛ-yɛ kɛse

Nnuru a ɛwɔ mu no bo a ɛkɔ akyiri wɔ pon a ɛwɔ ase ha no mu.

Mfiridwuma adwumayɛ ho hia wɔ mmeae a ɛhɔ yɛ hyew kɛse ne nhyɛso kɛse -.

• Ahoɔden a Wɔde Tensilehwɛ hu sɛ paipu ahorow no ntumi nsɛe wɔ nhyɛso ase wɔ ɔhyew a ɛkɔ soro mu
• Aba Ahoɔdende ahobammɔ a ɛfata ma wɔ nhyɛso a ɛkɔ so daa ase
• Adwuma a ɛkorɔn-adwumagrades te sɛ P91/P92 ma ahoɔden ne boasetɔ a ɛkorɔn kɛse sen P11/P22 a wɔtaa de di dwuma, ɛtrɛw nhwehwɛmu ntam na ɛma nhyehyɛe a ɛwɔ hɔ no tu mpɔn

Hwɛ pon a ɛwɔ aseɛ ha no na woanya mfiri agyapadeɛ ho nsɛm a ɛkɔ akyiri.

Boiler pipe insulation na wɔtaa de si hɔ maɔhyew-ahwerew sohwɛ ne adwumayɛfo ahobammɔ, nanso ebetumi nso de ahotoso kɛse aba sɛ wɔma nsu kɔ mu na ɛkɔ so tra hɔ a. Wɔ afifide pii mu no, .boiler pipe akuturukubɔkyerɛboxing/lagging paipu no ne insulation ne dade jacketing (cladding) .sɛnea ɛbɛyɛ a wɔbɛbɔ insulation system no ho ban bere a wɔreyɛ adwuma na wɔresiesie no. Adetɔ "ma-anaa-bubu" nsɛm no nyɛ insulation thickness kɛkɛ-ɛte saansuo a ɛkɔ mu no ano aduru + nsuo a ɛkɔ mu/afiri mu, efisɛ nsu a akyea no betumi aka karnsɛe a ɛba wɔ insulation ase (CUI) .wɔ abɔnten paipu no ani, a mpɛn pii no wonhu kosi sɛ ɛbɛtwa.

Nea ɛbɛyɛ na ɔfã yi ayɛ nea wotumi de di dwuma kɛse no, nsɛntitiriw a wɔtaa kyerɛ wɔ nnwuma ankasa ho ni:

• Kyerɛkyerɛ insulation atirimpɔw ne ɔhyew envelope mu:wɔpaw thickness ne material fi adwumayɛ ɔhyew ne ɔhyew-hwere botae ahorow mu, nanso efi sɛ ebia line no hu nsosakretwie(fi ase/gyae) a ɛde nsu fa nkwaa mu.
• Kyerɛ jacketing nhyehyɛe no, ɛnyɛ "insulation" nko:nneɛma (aluminum/stainless/galvanized), ne kɛse, ne sɛnea wɔyɛ nhama/a ɛkata so; nneɛma a ɛkata so yiye no bɛyɛ mmeae a nsu kɔ mu.
• Nsuo a ɛkɔ mu no ano aduru ho nsɛm (wɔanyera mu dodow no ara):hwehwɛ sɛ wɔde nhama tenten a wɔatoto mu, n’awiei a wɔato mu wɔ baabi a ɛfata, ne mmara a emu da hɔ a ɛfa nneɛma a wɔde hyɛ mu ho (nneɛma a wɔde gyina akyi, nnwinnade a wɔde tap, nkataso).
• Drain/vent nyansapɛ:kyerɛ baabi a nsu betumi aguan-nsuo a ɛba fam-nsuo a ɛkɔ fam, su ntokuru, anaa mframa a ɛkɔ mu-efisɛ nhyehyɛe a "wɔatoto mu pɛpɛɛpɛ" wɔ asetena ankasa mu taa bɛyɛ ansu afiribere a wɔasɛe no akyi.
• Mpɔtam a ɛho hia a ɛsɛ sɛ yɛfrɛ no pefee:pipe supports ne clamps, elbows/tees, low points, ne termination points-eyinom yɛ CUI hotspots a ɛtaa ba efisɛ ɛkura nsuo na ɛtwe adwene si nhyɛsoɔ so.
• CUI asiane ɔhyew band awareness:nhama a ɛyɛ adwuma wɔ CUI asiane a ɛtaa ba mu (a ɛtaa yɛ hyew sɛnea ɛbɛyɛ a ɛbɛtena nsu nanso ɛnyɛ hyew sɛnea ɛbɛyɛ a ɛbɛyow ntɛmntɛm) taa hia jacketing nteɛso a emu yɛ den ne nhwehwɛmu kwan a wɔayɛ ho nhyehyɛe.
• Nhwehwɛmu-adamfofa akuturukubɔ:hiaafã horow a wotumi yi fi hɔanaasɛ nhwehwɛmu mfɛnsere wɔ mmeae a asiane kɛse -wɔ mu sɛnea ɛbɛyɛ a owura no betumi ahwɛ sɛ abɔnten tebea no te a ɔmfa biribiara nhyɛ mu-dum wɔ bere biara a wɔatwa mu.
• Ahosiesie a wɔyɛ wɔ soro ne nea wɔde kata so wɔ insulation ase:sɛ adwuma no de coating di dwuma wɔ insulation ase a, kyerɛ coating type ne surface prep nnyinaso; insulation nsi ananmu wɔ corrosion ahobammɔ ananmu.
• Maintenance nokwasɛm kasamu:fa gye a wogye tom ma jacketing damage repair ka ho, ɛfiri sɛ field dents/tears abu so na ɛbɛyɛ long-term leak initiators sɛ wɔansiesie ntɛm a.

• Boiler/HRSG a ɛkorɔn-ɔhyew atiri ne nkitahodi spools:

Wɔ HRSG ne boiler nsupɔw so no, headers ne spool connections yɛ adwuma wɔ ɔhyew a ɛkɔ soro a ɛkɔ so daa, ne wosow ne ɔhyew a ɛkɔ soro. Mpɛn pii no, afuw mu adwuma hwehwɛ sɛ wɔde mfɛnsere a ɛyɛ den a ɛma nneɛma twa mu wɔ baabi afit-up pɛpɛɛpɛyɛ ne weld nhyehyɛe nteɛsosi gyinae sɛ ebia nhyehyɛe no yɛ nea ɛfata anaa. OD/WT a ɛkɔ so daa ne ɔhyew-ayaresa tebea a ɛteɛ yɛ adetɔ ho nhyehyɛe atitiriw.

• Superheater / reheater outlet piping a ɛbɛn fononoo no (radiant zone exposure):

Piping a ɛbɛn fononoo no ma dade hyew kɔ soro, oxidation scaling, ne ɔhyew a ɛnteɛ. Nokwasɛm a ɛwɔ adwumayɛbea hɔ ne sɛ wɔtaa yi insulation ne jacketing na wɔsan de si hɔ bere a wɔresiesie no, enti wɔhyɛ soabɔnten so oxidation ne CUI asianeyɛ asetra mu kyinhyia no fã, ɛnyɛ nneɛma a wɔpaw mfiase no nkutoo.

• Refinery gya heater outlet piping ne ngo a ɛyɛ hyew transfer loops:

Saa nhyehyɛe ahorow yi tu mmirika wɔ ɔhyew a ɛkɔ soro mu bere tenten, na ɔhyew a ɛtra hɔ bere tiaa bi wɔ bere a wɔdannan ne nhyehyɛe a ɛhaw adwene no. Adwumayɛbea nsɛm a ɛtaa ba no bi ne flange/fit-up nhyɛso a efi ɔhyew nyin ne insulation a ɛsɛe a ɛde abɔnten so nsɛe ba. Wɔde alloy boiler pipe nneɛma di dwuma de ma ahoɔden kɔ so yɛ hyew na ɛtew nsiesie a wɔnyɛ ho nhyehyɛe so.

• High-nhyɛso nhyehyɛe piping ne nhyɛso nhyehyɛe a ɛka bom (valve stations / reactor tie-ins):

Wɔ high-pressure units mu no, piping a ɛtwa reactors, compressors, ne valve stations ho hyia no hu mfiri adesoa a efi supports, vibration, ne siesie a wɔtaa kɔ hɔ. Mpɛn pii no, adetɔ si so duasɔhwɛ ho adanse a wɔakyerɛw ato hɔ, traceability, ne weldability controls efisɛ kyerɛwtohɔ biara a ɛyera betumi akyɛ commissioning.

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FAQ

 

 

Asɛmmisa: Dɛn ne boiler paipu ho nkyerɛkyerɛmu?

A:Ɛsɛ sɛ wɔkyerɛkyerɛ boiler pipe specifications mu sɛOD × ɔfasu no mu duru × tenten × grade × gyinapɛn a edi so, ne end type (BE/PE/T&C) ne nea wɔhwehwɛ sɛ wɔayi afi mu (ɔhyew ayaresa/NDT/hydrotest sɛ ɛfata a). Typical supply ranges wɔ kratafa yi animOD 10.3–1422 mm na ɛwɔ hɔ, WT Ennu anaasɛ ɛne 150 mm yɛ pɛ, ne6 m / 12 m / 20FT / 40FT (ɛkɔsi mita 18) ..

Asɛmmisa: Dɛn ne boiler pipe nneɛma?

A:Boiler pipe nneɛma taa yɛChrome-Moly (Cr-Mo) ferritic aduru a wɔde ayɛ dade a ɛnyɛ denma ɔhyew a ɛkorɔn-ɔhyew/nhyɛso a ɛkorɔn-nhyɛso som, baabi acreep ahoɔden ne oxidation a ɛko tiadrive asetena mu ahotoso; abasobɔde a wɔtaa nya no bi neASTM A335 P1–P92 (ne P122) na ɛyɛ adwuma wɔ ɔkwan a ɛyɛ mmerɛw so.egyina adwuma so.

Q: Boiler tube material grade / boiler tube dade grade - ɔkwan bɛn so na ɛsono no wɔ boiler pipe grade ho?

A:"Boiler tube dade grade" taa kyerɛASTM A213 T-adesua (tubing) ., bere a boiler piping taa yɛ saaASTM A335 P-nsuo (paipu) .; wobetumi ayɛ alloy mmusua a ɛte saa ara (sɛ nhwɛso no, .P11↔T11, P22↔T22) nanso ɛsɛ sɛ ɛne BOM ade no su hyia na wɔakwati adansedi a ɛnhyia bere a wɔayi no adi no.

Q: Boiler pipe a ɛretu wɔ abɔnten - dɛn na ɛtaa de ba ne ɔkwan a wɔbɛfa so asiw ano?

A:"Leaking outside" wɔ hot lines so no taa batansɛe a ɛba wɔ insulation ase (CUI) .nea efi nsu a ɛkɔ mu ne nsu a akyea wɔ insulation/boxing ase na ɛde ba; prevention yɛ jacketing ho nsɛm a wɔbɛkyerɛ amansuo a wɔde di dwuma + nsuo a wɔde fa mu/nsuo a wɔde fa mune nhwehwɛmu kwan a wɔbɛma akɔ so wɔ supports/low points mmom sen sɛ wɔbɛfa insulation sɛ akyi adwene a ɛyɛ soronko.

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