Nneɛma a wɔde kyekyere nneɛma bi wɔ hɔ a ɛkyekyere afã horow no bom kɛkɛ, na afei nneɛma a wɔde kyekyere nneɛma wɔ hɔ a wogye di wɔ mmeae a huammɔdi nyɛ ɔkwan a wobetumi afa so.
ASTM A193 Grade B7 stud bolts no ka ɔfa a ɛtɔ so mmienu no ho.
Wɔ mmeae a wɔyɛ nneɛma a wɔde yɛ nneɛma foforo, nnuruyɛbea ahorow, nhyɛso nhama nhyehyɛe ne nnwinnade a wɔsiesie no yiye no, wɔtaa paw saa nhama yi efisɛ mfiridwumayɛfo hia ano aduru a wɔde kyekyere nneɛma a ebetumi akɔ so ayɛ pintinn wɔ nhyɛso, wosow ne ɔhyew nsakrae ase wɔ adwumayɛ kyinhyia tenten mu.
Nea ɛma B7 studs yɛ soronko no nyɛ nipadua a ɛyɛ nhama a edi mũ a wuhu wɔ mfonini no mu no nkutoo.
Mfaso ankasa a ɛwɔ nneɛma no ne ɔhyew a wɔde yɛ adwuma wɔ akyi no so.
Wɔde chromium-molybdenum alloy dade na ɛyɛe na wɔde dum ne tempering na ɛyɛ saa stud bolts yi ma dwumadie a wɔbu carbon dadeɛ a wɔde nhama ayɛ a ɛyɛ mpapahwekwa sɛ ɛyɛ nea wɔgye tom kɛkɛ.
Wɔ akuw a wɔhwɛ afifide so, titiriw wɔn a wɔde flange nhyehyɛe, valve ne pressure vessel covers yɛ adwuma no, wɔtaa bu B7 studs sɛ standard stock nneɛma esiane sɛ wɔada no adi sɛ wotumi de ho to so wɔ ɔsom mu nti.
Wɔ da-da -da biara refinery adwumayɛ mu no, wɔtaa de si flange joints a ɛkɔ so daa preload ne sealing pressure ho hia.
Sɛ wɔhwere tumi ketewaa bi mpo wɔ clamping force mu a, ebetumi aka gasket adwumayɛ, na ɛno nti na project engineers taa kyerɛ B7 mmom sen generic threaded rods.
Eyi te saa titiriw wɔ mmeae a wɔyɛ ngo ne gas a wɔde mfɛnsere a wɔde siesie nneɛma a wɔato mu no sua koraa no.
Black surface finish a wɔakyerɛ wɔ mfonini no mu no yɛ classic industrial finish dodow no ara atɔfo ntɛm ara de bata B7 flange studs.
Wogye tom kɛse ma afifide a atwa yɛn ho ahyia wɔ dan mu, mfiri nhyiam ne adekoradan mu nneɛma a wɔde ma.
Sɛ wim tebea a ɛyɛ hu kɛse, titiriw wɔ mpoano petrochemical terminals anaa mpoano mmoa adwumayɛbea ahorow mu a, wobetumi de coating upgrades ama sɛnea adwuma no ahwehwɛde ahorow te.
Wɔ petrochemical dwumadie akyi no, yɛahu sɛ saa adeɛ yi ho ahwehwɛdeɛ renya nkɔanim wɔ nnwuma a wɔde bɛsan asiesie ne adansiɛ a wɔbɛsan asiesie mu.
Wɔ ntawntawdi akyi adansi adwuma mu, mmeae a wosiesie mfiridwuma ne dade a wɔde si hɔ ntɛm ara mu no, adwumayɛfo a wɔyɛ adwuma wɔ hɔ no taa hia nhyehyɛe a wɔde kyekyere nneɛma a wobetumi de asi hɔ ntɛmntɛm bere a wɔda so ara de ahotoso a ɛfa adansi ho ma.
Typical Flange Dwumadie Nkyerɛkyerɛmu
| Flange Kɛseɛ | Stud Size a Wɔkamfo Kyerɛ | Dodoɔ |
|---|---|---|
| 2" | 5/8 "× 90mm na ɛwɔ hɔ | 4 pcs |
| 4" | 3/4 "× 120mm na ɛwɔ hɔ | 8 pcs |
| 6" | 3/4 "× 140mm na ɛwɔ hɔ | 8 pcs |
| 8" | 7/8 "× 160mm na ɛwɔ hɔ | 8 pcs |
| 10" | 1 "× 180mm na ɛwɔ hɔ | 12 pcs na ɛwɔ hɔ |
Eyi ne baabi a full thread B7 studs bɛyɛ nea mfaso wɔ so kɛse.
Esiane sɛ wobetumi ayɛ nsakrae wɔ nnuadewa mu kwa wɔ asaawa no tenten nyinaa mu nti, wɔtaa de di dwuma wɔ bere tiaa mu dade nnua, nnwinnade nnyinaso, adan a wɔde boa nneɛma a wɔde di dwuma ne adansi adwuma a ɛyɛ den sɛ wɔbɛkyerɛ sɛnea wobetumi agyina ano wɔ afã horow no so.
Sɛ wɔde toto bolt a wɔtaa de di dwuma ho a, ɛma wotumi yɛ nsakrae kɛse bere a wɔreboaboa ano wɔ afuw mu no.
Wɔ EPC adwumayɛfoɔ fam no, saa nsakraeɛ yi kyerɛ tẽẽ kɔ berɛ tiawa a wɔde besisi hɔ ne nsɛm kakraa bi a ɛfa nsakraeɛ ho.
Sɛ yɛhwɛ adetɔ a, adetɔfo a wɔwɔ petroleum ne nnuruyɛ mu no taa bisa B7 studs a wɔde ka ASTM A194 Grade 2H nuts ho.
Saa nkabom yi da so ara yɛ nsɛm a wogye tom kɛse ma flange nkitahodi ne nhyɛso mfiri nhyiam ahorow no mu biako.
Wɔ nnwuma a wɔde kɔ amannɔne ho no, wɔtaa yɛ ahyɛde sɛ wɔde nneɛma ho adansedi nkrataa, ɔhyew a wɔde yɛ adwuma ho kyerɛwtohɔ ne mfiri agyapade ho amanneɛbɔ.
Yɛboa nkrataa a edi mũ a mill sɔhwɛ adansedi nkrataa ne nhwehwɛmu amanneɛbɔ a ɛfa nneɛma a wɔkra pii ho ka ho.
Wɔ nsɛm a wɔde di dwuma mu no, eyi nyɛ ade a wɔde kyekyere ade a wɔde di dwuma wɔ ɔkwan a ɛkɔ akyiri so.
Eyi ne stud a wɔpaw ma nhyehyɛe ahorow a ɛde hydrocarbons, ɔhyew a ɛkorɔn-nsuo a ɛyɛ hyew ne mfiridwuma mu adesoa a emu yɛ duru.
Ɛno nti na wɔkɔ so de di dwuma kɛse wɔ mmeae a wɔyɛ nneɛma a wɔde yɛ nneɛma foforo, adwumayɛbea ahorow a wɔyɛ nnuru, nneɛma a wɔde di dwuma a wɔsan de di dwuma ne adansi adwuma akɛse-yɛ mu.
Standard Nneɛma a Ɛwɔ Hɔ
| Nominal Diameter a Wɔde Di Dwuma | Nhama a Wɔde Di Dwuma Gyinapɛn | Nneɛma a Wɔtaa Yɛ (mm) . | Nneɛma a Wɔtaa Yɛ (inch) . | Nut a ɛne ne ho hyia |
|---|---|---|---|---|
| M12 / 1/2" | UNC / Mɛtrik | 50, 75, 100, 120 | 2", 3", 4", 5" | A194 2H |
| M16 / 5/8" | UNC / Mɛtrik | 80, 100, 120, 150 | 3", 4", 5", 6" | A194 2H |
| M20 / 3/4" | UNC / Mɛtrik | 100, 120, 150, 180 | 4", 5", 6", 7" | A194 2H |
| M24 / 1" | UNC / Mɛtrik | 120, 150, 180, 200 | 5", 6", 7", 8" | A194 2H |
| M30 / 1-1/4" | UNC / Mɛtrik | 150, 180, 200, 250 | 6", 7", 8", 10" | A194 2H |
Mma Wo werɛ Mfi Nuts no
Adeɛ baako a yɛkae wɔn a wɔtɔ adwuma no ne akuo a wɔsiesie adwuma no bere nyinaa: B7 stud yɛ nea wotumi de ho to so te sɛ nut a wɔde abɔ mu no nkutoo.
Wɔ ASTM A193 Grade B7 studs ho no, nut a ɛne no hyia a ɛteɛ neASTM A194 Grade 2H hex nut a emu yɛ duru.
Wɔayɛ afã abien no nyinaa sɛ ɛbɛbom ayɛ adwuma wɔ high-pressure flange ne nnwinnade nhyiam ahorow mu.
Sɛ wode nut a ɛba fam-grade standard nut di dwuma a, ebetumi ama thread stripping bere tenten ansa na stud no adu ne designed load capacity, a ebetumi abɛyɛ asiane kɛse wɔ installation anaa pressure testing mu.
Sɛnea ɛbɛyɛ a yɛbɛkwati sɛ biribiara nhyia wɔ beae hɔ no, yɛtaa de studs ne 2H nuts no ma sɛ set a ɛne ne ho hyia koraa, titiriw ma shutdown maintenance ne EPC projects.
Eyi boa akuw a wɔtɔ nneɛma no ma wɔtew mfomso a ɛba wɔ instɔlehyɛn so no so na ɛmma wonnya bere a ɛsom bo bere a wɔresiesie nneɛma a egye ntɛmpɛ no.
Dɛn Nti na Ɛsɛ sɛ Wotɔ Fi Dongchao Hardware?
Yɛyɛ adwumayɛbea a ɛyɛ nneɛma tẽẽ a ɛwɔ Handan, ɛnyɛ adwumakuw a ɛyɛ aguadi.
Ɛno kyerɛ sɛ biribiara a wɔkra no fi yɛn production line no mu tẽẽ a ɛwɔ quality control a ɛyɛ den, bere a wɔde kɔ ntɛmntɛm ne mfiridwuma mu mmoa a emu da hɔ.
Esiane sɛ yɛte ase sɛ refinery a wɔto mu, petrochemical siesie ne infrastructure a wosiesie ntɛm no taa yɛ adwuma tia nhyehyɛe a emu yɛ den nti, yɛde ASTM A193 B7 akɛse a wɔtaa de di dwuma no sie daa ma wɔde kɔ ntɛmntɛm.
Wɔde production batch biara ma aMill Sɔhwɛ Adansedi Krataa (MTC) .ama ɔhyew-nɔma hwehwɛ a edi mũ, enti wo su ne nhwehwɛmu kuw no betumi de ahotoso ahwɛ sɛ nneɛma fibea no yɛ nokware.
Sɛ woresiesie wo ho ama wo flange a edi hɔ a wobɛsesa, afifide a wobɛsiesie anaasɛ wobɛsan akyekye adwuma a, fa kɛse ne dodow a wɔhwehwɛ no mena yɛn kɛkɛ.
Yebetumi atwitwa akɔ tenten, de nea wɔhwehwɛ wɔ soro awie na yɛayɛ nhyehyɛe a wɔde bɛmena ntɛmntɛm sɛnea wo adwuma no bere nhyehyɛe te.
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