Txheem:ASTM A53
ASTM A53 thiab ASME SA53 yog npaj rauKev Pabcuam Siab(piv txwv li, dej, dej, compressed huab cua, hydrocarbon roj av tsis pub tshaj qhov ntsuas kub) thiab Cov ntawv thov txheej txheem(piv txwv li, scaffolding, xuas tes ua, txhawb nqa piling). Nws yog qhov haum rau vuam thiab rau kev tsim cov haujlwm uas muaj feem xyuam rau cov sib txuas, khoov, thiab flanging, raug rau qee yam txuj ci.
A53 npog seamless thiab welded, dub thiab kub- dipped galvanized nominal (nruab nrab) phab ntsa yeeb nkabRau cov tog raj, khoov, flanging thiab lwm lub hom phiaj tshwj xeeb thiab haum rau vuam. Nruam - welded yeeb nkab tsis yog npaj rau flanging. Lub Hom Phiaj uas yog cov yeeb nkab uas npaj yuav tsum tau hais rau kev txiav txim.
Qhov Tseem Ceeb Hom
- Hom S (Seamless):Tsim los ntawm kub tho kev / Extrusion. Kev ntseeg siab tshaj plaws rau cov kev pabcuam tseem ceeb.
- Hom E (ERW - hluav taws xob tiv thaiv welded):Dov - tsim thiab fusion - welded yam tsis muaj tub lim hlau. Tus nqi -} Ua tau zoo rau nruab nrab {4 4}} ntau yam pressures.
- Hom F (rauv taws taub qab - welded):Tsis tu ncua welded siv forge siab. Txwv rau phab ntsa sib zog (feem ntau sch 10 lossis thinner) thiab qib A.
Cov Khoom Siv Qeb
- Qeb A:Yam tsawg kawg tensile lub zog 330 mpa (48 ksi), tawm tsam 205 mpa (30 ksi). Hom rau cov qauv / qes - siab siv.
- Qib B:Txhim kho cov neeg kho tshuab - tensile 415 MPa (60 ksi), tawm los 240 MPA (35 ksi).Nyiam rau cov tshuab siab piping.
Cov Kev Xaiv Deg:
- Dub (liab qab):Uncoated nrog residual mill nplai. Yuav tsum tau muaj kev tiv thaiv corrosion sab nraud.
- Galvanized (Zinc - txheej txheem):Hot-dip processed post-manufacture. Txheem rau corrosion -} luag ib puag ncig zoo li fencing lossis cov kav dej.
Qhov ntau thiab tsawg cov ntawm ib / sa53-b seamless thiab welded yeeb nkab hauv:
- Qhov ntau thiab tsawg rau: 1/8 "Nps txog 26" Od
- Cov Sijhawm: S / 20, S / 40, S / 60, S / 60, S / 80, S / 190, S / 140, S / 160 THIAB XXH
Tshuaj Yuav Tsum Tau
| Hom Dab (seamless) |
HOM E | Hom F | ||||
| (hluav taws xob - Ua hauj lwm welded) |
(rauv - Welded Yeeb Nkab) |
|||||
| Lub ntsiab | Qib A | Qib B | Qib A | Qib B | Qib A | |
| Carbon max. % | 0.25 | 0.30* | 0.25 | 0.30* | 0.3 | |
| Manganese% | 0.95 | 1.2 | 0.95 | 1.2 | 1.2 | |
| Phosphorous, max. % | 0.05 | 0.05 | 0.05 | 0.05 | 0.05 | |
| Sulphur, Max. % | 0.045 | 0.045 | 0.045 | 0.045 | 0.045 | |
| Tooj liab, max.% | 0.40 | 0.40 | 0.40 | 0.40 | 0.4 | |
| Npib tsib xee, max. % | 0.40 | 0.40 | 0.40 | 0.40 | 0.4 | |
| Chromium, max. % | 0.40 | 0.40 | 0.40 | 0.40 | 0.4 | |
| Molybdenum, Max. % | 0.15 | 0.15 | 0.15 | 0.15 | 0.15 | |
| Vanadium, max. % | 0.08 | 0.08 | 0.08 | 0.08 | 0.08 | |
| * Rau txhua qhov txo qis dua 0.01% qis dua cov carbon ntau tshaj plaws, nce ntawm 0.06% manganese saum toj kawg nkaus yuav tso cai rau ntau kawg ntawm 1.65% (tsis siv rau Sa53). | ||||||
Ntsiab lus:Tseem hlau hlau (FE), carbon (c), manganese (m), tooj (CU), Molybdenum (NC
Qib B Qhov sib txawv:Feem ntau muaj me ntsis cov pa roj carbon thiab manganese cov ntsiab lus tshaj qib ib kom ua tiav lub zog siab dua.
Cov Khoom Siv Neeg Kho Tshuab
| Seamless thiab hluav taws xob - tsis kam - welded | Txuas ntxiv - welded | ||
| Qib A | Qib B | ||
| Lub zog tensile, min., PSI | 48,000 | 60,000 | 45,000 |
| Paib lub zog, min., Psi | 30,000 | 35,000 | 25,000 |
Elongation:Cov kev sib txawv raws li cov quav me me thiab cov phab ntsa tuab, feem ntau yog kwv yees li 35% mus rau ib puag ncig 15% rau cov phab ntsa hnyav.
Kev Xeem Yuav Tsum
Hydrostatic kev kuaj: Yuav tsum ua txhua yam yeeb nkabTshwj tsis yog hloov los ntawm NDE rau seamless (hom s). Test ntsuas tau suav nrog cov qauv hauv tus qauv (feem ntau ua rau muaj kev ntxhov siab ntau dua lossis sib npaug rau 1000 psi / 6.9 mpa hauv phab ntsa yeeb nkab).
Tsis - Kev Ntsuas Hluav Taws Xob Destructive (NDE): Yuav tsum ua rau ERW (hom e) thiab seamless (hom s) cov yeeb nkab.Txhim kho Weld Kev Ncaj Ncees (ERW) lossis kuaj pom tsis zoo (seamless). Cov hau kev suav nrog EDDY tam sim no lossis ultrasonic kuaj.Tuaj yeem hloov hydrostatic kuaj rau seamless yeeb nkab.
Kaj ntsuam xyuas (Welded yeeb nkab):Yuav tsum muaj ERW (ntaus E) los ua kom pom kev Weld Divility Weld.
Khoov xeem (rauv taws (rauv welded):Yuav tsum muaj hom F.
Tensile xeem:Yuav tsum tau ib ntau.
Kuaj Hardness:Tej zaum yuav tsum muaj rau qee qhov yuav tsum tau ntxiv.
Txheej kev xeem (galvanized):ZINC Adherence (Rauj lossis Kev Ntsuas Ntsev) thiab qhov hnyav (triple - chaw xeem).
Txwv & sau ntawv
Tsis yog rau siab - kub kev pab:Tsis yog npaj rau kev siv saum toj 430℃(800℃f). ASTM A106 yog qhov kev qhia tshwj xeeb rau seamless carbon steel yeeb nkab rau siab- kub kev pab.
Tsis rau mob loj heev:Feem ntau rau ib puag ncig me; Galvanizing muaj kev tiv thaiv corrosion tsawg.
Weldability:Feem ntau zoo vim tias cov ntsiab lus muaj roj carbon tsawg.
Siab Ntsuam Xyuas:Qhov kev siab ua haujlwm tiag tiag yog nyob ntawm qhov loj me, sijhawm (phab ntsa tuab), qib kaum (piv txwv li, ASME B31.1, B31.3).
Cov Ntawv Thov
- Tsawg / Nruab Nruab Nruab Nruab Nruab Nruab Nruab Nrab, cov cua dej siab, pa taws, ncu (roj qis {{
- Cov ntawv thov txheej txheem: Scaffolding, Handrails, fencing, guardrasns, txhawb posts.
- Conduit: Kev Siv Hluav Taws Xob (feem ntau galvanized).
- Kev tsim kho dav dav: thav duab, cov cuab yeej cuab tam.
q thiab a
Q1: tuaj yeem AVEC A53 Qib B Yeeb Nkab Hloov Pauv Attm A106 Yeeb Nkab Hauv Siab- kub kev pab?
A:Tsis pom zoo. Thaum ob qho tib si yog cov pa roj carbon steel:
A53yog rated rauTsawg dua los yog sib luag rau 430℃(800℃f)- Nws cov khoom siv mechanenies degrade dhau qhov pib no.
A106(tshwj xeeb rau high - Temp Service) tswj hwm lub zog los485℃(900℃f)Vim yog stricter chemical tswj (piv txwv li, qis dua leej faj / phosphorus).
Qhov tseem ceeb txawv: A106 seamless pipe undergoes normalization heat treatment for enhanced grain structure stability. Substituting A53 in steam lines >430 DEGREE QUAG CRREER tsis ua haujlwm lossis weld cracking.
Q2: Vim li cas ERW (hom e) Astm A53 cov yeeb nkab qee zaum tsis lees txais rau cov khoom pabcuam hauv qab?
A:Feem ntau vim yogWeld Kev Phuam Ceev XwmNyob hauv ib puag ncig h₂s:
Xaiv kev corrosion:ERW cua sov -} cuam tshuam zones (Hz) yog nquag mus rau kev ntxhov siab sulfide (SSC) yog tias tawv tawv22 HRC(ib qho NACE MR0175).
Tsis muaj dab tsi:"Raws li {- welded" ERW kav khaws cov khoom seem, nce SSC kev ua tau zoo vs normalized seamless yeeb.
Tsis kam lees qhov siab:Ua tsis tiav Fusion flawsws ntawm Weld Seam tuaj yeem ua cov ntsiab lus pib hauv qab so kua.
Lub ntsiab
ASTM A53yog qhov tseem ceeb rauCov Yeeb Nkab Hlau, muaj nyob rau hauvseamless (hom s), hluav taws xob -}} Tsis kam welded (hom e) {} pob tw welded (ntaus f)cov ntaub ntawv, hauvQib A (qis dua lub zog) thiab B (lub zog siab dua)Cov. Nws yog dav siv rauSiab priping, cov ntawv thov txheej txheem tsim tawm, thiab lub hom phiaj dav dav sivCov. Yeeb nkab tuaj yeem muab tauliab qab (dub) lossis galvanizedCov. Qhov tseem ceeb yuav tsum muajChemistry, Cov Cuab Yeej Siv Cov Neeg Kho, Sab Hauv, Qhov Yuav Tsum Tau Ua Hydostatic lossis NDE kuaj, thiab cim tshwj xeebCov. Thaum thaum muaj ntau yam, nws yogtsis haum rau siab - kev pabcuam kub lossis cov chaw muaj kev sib xyawCov. Qib B, hom S lossis E yog qhov kev xaiv feem ntau rau cov kav dej siab siab.
Cim npe nrov: ASTM A53 Yeeb Nkab, Tuam Tshoj, Tuam Tshoj chaw tsim khoom, Hoobkas, nqe
