ASTM A106 Nsuo a Ɛnyɛ Nwene

ASTM A106 yɛ standard seamless carbon steel pipe dodow no ara designers kyerɛ bere a ɛsɛ sɛ line no soa nsu a ɛyɛ hyew anaa gas wɔ nhyɛso ase. Wɔayɛ no ama elevated-temperature service, wɔayɛ dimensioned sɛnea ASME B36.10M, na wobetumi de ama ne plain anaa beveled awiei ma welding, bending ne flanging. Wɔ Grade A, B ne C mu wɔ ASTM A106 mu no, wɔde Grade B di dwuma kɛse efisɛ ɛma ahoɔden, ductility ne weldability a wɔde di afra a wotumi de ho to so ma steam lines, refinery headers, process piping ne power plant circuits.

• Gyinapɛn: ASTM A106 / ASME SA106
• Grade: B (wɔsan nso wɔ hɔ A, C sɛ adwuma no ma kwan a) .
• Form: Seamless, ɔhyew-awie anaasɛ awɔw{1}}awie
• Awiei: Awiei a ɛyɛ petee (PE) anaa awiei a ɛyɛ beveled (BE) a wɔde yɛ welding
• Nsusuwii: ASME B36.10M, NPS ne nhyehyɛe-gyina

Grade no gyina carbon–manganese–silicon nhyehyɛe a ɛnyɛ den, a wɔhwɛ so yiye-so. P ne S so tumi ma paipu no kɔ so yɛ weldable na ɛyɛ den.

Nea enti a eyi ho hia: carbon ma grade no nya ne nnyinaso ahoɔden; manganese boa ma ferrite–pearlite nhyehyɛe no gyina na ɛma ɛyɛ den; silicon ma scale/oxidation resistance tu mpɔn bere a paipu no de nsu a ɛyɛ hyew anaasɛ process media rekɔ no.

Grade B yɛ "mfinimfini" grade nanso ɛyɛ den dedaw ma afifide dodow no ara a wɔde di dwuma.

Nkyerɛaseɛ ma adwini ne fabrication: tensile ahoɔden bɔ ho ban fi mpaapae ne axial adesoa; yield ahoɔden ne anohyeto ansa na daa deformation, titiriw ma high-pressure mmirikatu; elongation hwɛ hu sɛ paipu no betumi ayɛ field-bent, welded na wɔde ahyɛ mu a ɛnyɛ mpaapaemu.

Adwumayɛ wɔ Ɔhyew a Ɛkorɔn-Ɔhyew Dwumadi mu
A106 Wɔabɔ wɔn tirim sɛ Grade B bɛkɔ so ayɛ adwuma wɔ dade hyew a ɛbɛyɛ sɛ ɛbɛkɔ akodu digrii 400–450. Wɔ saa gyinabea yi mu no ferrite–pearlite microstructure no kɔ so gyina hɔ pintinn, silicon boa ma ɔfasu no gyina scaling ano, na pipe no kɔ so kura ne pressure-bearing tumi. Ɛno nti na wɔakyerɛ ama boiler feed lines, steam headers, heat-exchanger piping, hot oil service ne refinery utility systems. Sɛ wɔyɛ PWHT ne welding akwan a ɛfata a, paipu no nso betumi ayɛ adwuma wɔ cyclic service mu a ɛnhwere ne den ntɛmntɛm.

Wɔ A106 Grade B deɛ, ɔkwan a wɔfa so yɛ no nyɛ ade a wɔde boa – ɛno nti na paipu no tumi yɛ adwuma ankasa wɔ ɔhyew ne nhyɛsoɔ a ɛkorɔn mu. Ɔkwan a wɔtaa fa so yɛ owiyammo ma seamless A106 Grade B wɔ Octal Pipe no te sɛ eyi:

1. Billet a wɔpaw ne nnuru a wɔde di dwuma
Nneɛma a wɔyɛ no fi ase fi akum (deoxidized koraa), fine-grain carbon dade billets a ɛne A106 nnuru dodow hyia dedaw. Eyi hwɛ hu sɛ P ne S a ɛba fam, ahotew pa ne weldability. Wɔhwɛ ɔhyew ansa na wɔabobɔw sɛnea ɛbɛyɛ a wobetumi adu mfiri botae ahorow a wɔde bɛyɛ Grade B no ho bere a wɔayɛ ne ɔhyew a wɔde ayɛ adwuma awie no.

2. Billet a wɔde yɛ ɔhyew
Wɔma billets yɛ hyew wɔ fononoo a ɛkyinkyini anaasɛ ɛnantew-beam mu ma ɛyɛ hyew a ɛyɛ piercing/rolling. Ɔhyew a ɛyɛ pɛ ho hia wɔ ha efisɛ ɔhyew a ɛnteɛ bɛma ɔfasu-mu duru asesa bere a wɔato billet no mu no.

3. Hot piercing (tokuru a wɔyɛ) .
Wɔto billet a ɛyɛ hyew no mu wɔ cross-roll anaa mandrel piercing mill so ma ɛyɛ akorade a ɛyɛ tokuru. Eyi ne baabi a paipu no dan fi kurukuruwa a ɛyɛ den mu kɔ afiri a enni nhama mu. Botae no ne sɛ wɔbɛyɛ akorade a mfinimfini mpaapae biara nni mu na ɔfasu mpo atwa ne ho ahyia.

4. Elongation ne plug / mandrel rolling
Afei wɔma akorade a ɛwɔ tokuru no tenten na wɔbobɔw wɔ mandrel anaa plug mill so ma ɛbɛn ne kɛse ne ɔfasu no mu duru a wɔahyɛ da ayɛ no. Wobetumi de nneɛma pii a wɔde twitwiw nneɛma adi dwuma de asiesie ɔfasu no na ama ɔfasu no atu mpɔn. Saa anammɔn yi yɛ ade titiriw a ɛbɛma emu no ayɛ mmerɛw na ama ɔfasu no mu duru akɔ so ayɛ nea wotumi gyina ano.

5. Sizing/reducing mill
Sizing anaa reducing mill de paipu no ba ne OD a etwa to ne ne kurukuruwa. Wɔ nhyehyɛe a ɛkorɔn (afasu a ɛyɛ den) ho no, wɔyɛ nsakrae wɔ rolling parameters mu na ama wɔakura concentricity mu. Sizing a ɛyɛ pɛpɛɛpɛ wɔ ha kyerɛ sɛ welding yɛ mmerɛw na fit-up yiye wɔ site no so.

6. Onwini ne nea wɔde teɛ
Bere a wɔde ɔhyew ayɛ adwuma awie no, wɔma nsu afiri no dwo wɔ ɔkwan a wɔahyɛ so na afei wɔde fa afiri a wɔde teɛteɛ nneɛma mu. Teɛyɛ ho hia ma spools a wɔadi kan ayɛ ne automatic welding.

7. Ɔhyew a wɔde sa yare (sɛnea ɛho hia) .
Ɛgyina paipu kɛseɛ, wɔatew so dodoɔ ne adetɔfoɔ ahwehwɛdeɛ so no, wɔbɛtumi ayɛ paipu no sɛdeɛ ɛteɛ anaa adwennwene-agyae.

Normalizing ma ferrite–pearlite nhyehyɛe no tew, ɛma nneɛma a ɛwɔ ne tenten no yɛ pɛ na ɛma ɛyɛ den.

Adwennwen a wɔma ano brɛ ase no yi nhyɛso a ɛba no fi hɔ, na mfaso wɔ so sɛ wɔde weld bɛhyɛ paipu no mu wɔ nhyehyɛe bi a akyiri yi ebehu ɔhyew kyinhyia mu a.
Saa ɔhyew ayaresa a wɔahyɛ so yi ne nea ɛboa A106 Grade B ma ɛkɔ so yɛ ductility ne impact resistance wɔ ɔhyew som mu.

8. Awie, NDE ne hydrotest
Wɔtwitwa paipu a wɔawie no tenten, wɔde n’awiei hwɛ/wɔbɔ, na wɔde aniwa hwɛ ne tenten biara mu hwɛ sɛ ɛyɛ ne soro ne ne nsusuwii pɛpɛɛpɛ anaa. Afei wɔsɔ paipu no hwɛ:

• hydrostatic test de kyerɛ sɛ nhyɛso a wɔde siw ano
• eddy-mprempren anaa ultrasonic NDE de hwehwɛ emu/anim sintɔ ahorow
• agyiraehyɛde ne coating/varnish a wɔde bɔ ho ban
• Saa anammɔn yi nyinaa akyi nkutoo na wɔde MTC gyae paipu no.

Esiane sɛ ɔkwan no nyinaa yɛ seamless (no longitudinal weld), paipu no wɔ nhyɛso a ɛyɛ pɛ a ɛko tia twa ne nyinaa ho hyia – ade titiriw nti a wɔpaw A106 sen welded paipu ma high-temperature service.

(typical supply, betumi adi adwuma no abisade akyi)

Sɛnea ɛbɛyɛ a paipu no bɛyɛ nea wogye tom ma nhyɛso ne ɔhyew som no, ASTM A106 kyerɛ ahwehwɛde ahorow a ɛwɔ ASTM A999 mu nyinaa. Octal Pipe betumi de sɔhwɛ kwan a edi mũ ama:

• Hydrostatic sɔhwɛ wɔ ne tenten biara so de kyerɛ sɛ nhyɛso a wɔde siw ano
• Nondestructive nhwehwɛmu (eddy current anaa ultrasonic) de screen ɔfasu ne emu sintɔ ahorow
• Tensile ne hardness sɔhwɛ wɔ dade a ɛyɛ hyew biara mu de hwɛ sɛ mfiri no hyia anaa
• Flattening / bend sɔhwɛ ahorow de kyerɛ ductility
• Aniwa, OD, ɔfasu ne tenten nhwehwɛmu de hwɛ sɛ dimensional conformity
• MTCs kɔ EN 10204 3.1/3.2 ma ɔhyew a edi mũ ne sɔhwɛ traceability

Asɛm titiriw ne sɛ wɔkyerɛ A106 Grade B bere a ɔsom no yɛ abien no nyinaaa ɛnyɛ den koraaneɔhyew a ɛkorɔn-ɔhyew. Sɛ ahiadeɛ no yɛ dan-hyeɛ anaa ɔdan a, adetɔfoɔ taa kɔ ASTM A53 mmom; bere a ɛho hia ne line pipe ne PSL ahwehwɛde ahorow no, wɔkɔ API 5L. Sɛ wode krataafa yi si hɔ pefee ma "high-temperature seamless CS pipe" a, ɛbɛboa Google ma wɔate nea URL yi fa ho ase.

• Seamless carbon dade paipu a wɔyɛ no ASTM A106 / ASME SA106
• Grade B sɛ gyinapɛn; Grade A anaa C bere a adwuma no hwehwɛ
• Twitwa-kɔ-tenten, beveled awiei, coating / varnish ne export packing wɔ hɔ
• Sɔhwɛ ahorow nyinaa (hydro, NDE, mfiridwuma) a wɔakyerɛw ato hɔ na wotumi hwehwɛ mu
• Wobetumi ayɛ nhwehwɛmu a ɛto so abiɛsa-(BV, SGS, LR, ne nea ɛkeka ho) ho nhyehyɛe ansa na wɔde amena
• Osuahu a ɛfa nneɛma a wɔde ma ho ma refinery, power ne chemical plants a ɛsɛ sɛ nkrataa a wɔde ahyɛ mu no ne EPC ahwehwɛde ahorow hyia

Di nkitaho mprempren

FAQ

 

 

Q1: Dɛn na wɔde ASTM A106 Grade B seamless pipe di dwuma ma?

A1:Ɔhyew a ɛkorɔn-nhyɛso kɛse-nhyɛso nhyehyɛe paiping te sɛ nsuo a ɛyɛ hyew, refinery nsuo afiri, boiler feed nhama, ne ngo a ɛyɛ hyew som.

Q2: Nsonsonoe bɛn na ɛwɔ ASTM A106 Grade B ne ASTM A53 Grade B ntam?

A2:Wɔakyerɛ A106 ama ɔhyew a ɛkorɔn-ɔhyew som na wɔtaa paw bere a ɛho hia sɛ wɔde paipu a enni nhama; Wɔtaa paw A53 ma ɔhyew a ɛba fam-ɔsom dwumadie a ɛwɔ hɔ nyinaa.

Q3: Sɔhwɛ ne nkrataa bɛn na ɛsɛ sɛ mebisa ma ASTM A106 Grade B paipu?

A3:Bisa hydrotest anaa NDE aba, mfiridwuma/nnuru a wɔde di dwuma, ɔhyew-nɔma a wotumi hwehwɛ no nyinaa, ne EN 10204 3.1 MTC package.

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