ASTM A53 Gr.B Electric Resistance Welded (ERW) yeeb nkab
Lub ntsiab lus tseem ceeb
Standard specification rauwelded steel yeeb nkabua los ntawm covElectric Resistance Vuam (ERW)txheej txheem.A53 Qib B, Hom Eyog acost-zoo, welded yeeb nkabsiv rau kev siv dej dav dav thiab kev siv cov txheej txheem. Nws yogtsis seamless.
Qhov no yog cov khoom siv welded.Qhov "seam" hauv koj qhov kev thov tsis raug rau hom kev tsim khoom no.
Lub npe piav qhia
| Ib feem | Lub ntsiab lus |
|---|---|
| ASTM | ASTM International |
| A53 | Txheem rau cov yeeb nkab, hlau, dub thiab kub -dipped galvanized, welded thiab seamless |
| Gr. B | Qib B(standard zog qib) |
| Hom E | Hluav taws xob Resistance Welded(kev tsim khoom) |
| Yeeb | Weldedkhoom, tsis seamless |
Cov yam ntxwv tseem ceeb ntawm Qib B, Hom E (ERW)
| Feature | Kev piav qhia |
|---|---|
| Hom khoom | Carbon Steel |
| Kev tsim khoom | Hluav taws xob Resistance Welded (ERW)- muaj ib tug longitudinal weld |
| Kev siv tseem ceeb | Tsawg-kev thauj cov kua dej siab, cov qauv, kev siv tshuab |
| Qhov Loj | 1/8 "NPS to 24" NPS(feem ntau nyob rau hauv me me diameters) |
| Qhov tseem ceeb Advantage | Tus nqi qis duatshaj seamless yeeb nkab rau ntau daim ntawv thov |
| Kev txwv | Tsis yog rau siab - kub lossis siab - kev pabcuam tseem ceeb |
Tshuaj muaj pes tsawg leeg
| Element | Cov ntsiab lus (%) |
|---|---|
| Cov pa roj carbon (C) | 0.30 max |
| Manganese (Mn) | 1.20 max |
| Phosphorus (P) | 0.05 max |
| Sulfur (S) | 0.045 max |
| Copper (Cu) | 0.40 min (thaum teev) |
Mechanical Properties
| Khoom | Kev xav tau |
|---|---|
| Tensile zog | 415 MPa (60,000 psi) min |
| Yield zog | 240 MPa (35,000 psi) min |
| Elongation | Raws li tus qauv qauv |
Sib piv Table: A53 Hom E (ERW) vs. Hom S (Seamless)
| Yam | A53 Gr.B Hom E (ERW) | A53 Gr.B Hom S (Seamless) |
|---|---|---|
| Kev tsim khoom | Hluav taws xob Resistance Welded(muaj weld seam) | Seamless(tsis muaj weld seam) |
| Nqi | qis(kev lag luam ntau dua) | Siab dua |
| Weld kev ncaj ncees | Muaj peev xwm rau weld defects (yuav tsum tau tswj kom zoo) | Tsis muaj longitudinal weld, ntau uniform |
| Qhov Loj Muaj | Zoo heev rau qhov ntau thiab tsawg | Zoo heev rau txhua qhov ntau thiab tsawg |
| Tej kev siv | Cov kab dej, laj kab, qis -siab cua / roj, qauv | Ib yam, tab sis qhov twg weld seam yog undesirable |
| Kev ntsuas siab | Tsawg me ntsisvim weld factor | Siab dua me ntsis |
Cov ntawv thov siv
Cov dej xa dej thiab cov kab xa tawm
Natural gas thiab propane faib(tsawg-siab)
Fencing, handrails, thiab structural moj khaum
Scaffolding
Hluav taws kub sprinkler systems(galvanized)
Compressed cua kab(rau cov nroj tsuag huab cua)
HVAC system piping
Critical Technical & Selection Notes
1. Cov txheej txheem ERW & Weld zoo
Cov yeeb nkab yog tsim los ntawm steel kauj thiab welded raws nws ntev sivhluav taws xob kuj kub thiab siab.
Niaj hnub ERW (High-Frequency ERW)ua tau siab - zoo welds uas feem ntau muaj zog raws li lub hauv paus hlau.
Cov kav dej qub ERW(ua ua ntej ~ 1970) siv tsawg- vuam zaus thiab tuaj yeem ua rau seam corrosion thiab tsis ua haujlwm.Nco ntsoov qhia niaj hnub HF-ERW.
2. Thaum siv A53 ERW Yeeb Nkab
XaivA53 Gr.B Hom Ethaum:
Daim ntawv thov yogtsis yog - tseem ceeb(tsis tshua muaj siab, tsis yog - kua tshuaj lom).
Tus nqi yog thawj tus tsav tsheb.
Lub cev yuav yoggalvanized(feem ntau rau ERW).
Siv raulub hom phiaj los yog mechanical(piv txwv li, posts, kev txhawb nqa).
Tsis txhob siv A53 ERW rau:
Siab -kev pabcuam kub (>400℃F / 204 degree)
Siab - kev pabcuam hydrocarbon
Kev pabcuam Cyclic lossis qaug zog
ASME Boiler Code (Section I).
3. Fabrication & Koom
Yuav tau welded, threaded, los yog grooved.
Galvanized ERW yeeb nkabmuaj ntau heev; welding galvanized steel yuav tsum tau ceev faj tshwj xeeb kev nyab xeeb (zinc fumes).
Rau welding, lubweld seam yuav tsum zamthaum ua circumferential welds yog ua tau.
4. Txoj Cai Txais & Txwv
ASME B31.1 (Power Piping):Kev txwv nruj heev. Tsis yog rau chav.
ASME B31.3 (Cov txheej txheem Piping):Tso cai rau xwbQeb D Fluid Service(tsis yog-flammable, non- lom, tsis txaus ntshai).
ASME B31.4 / 31.8 (Tib kav):Tej zaum yuav siv tau rau qee qhov kev sib sau ua ke ntawm ntug hiav txwv thiab kev faib khoom, raws li kev tswj hwm nruj.
Cov ntsiab lus ntawm kev lag luam: Tus Nqi -Txoj Kev Xaiv
A53 ERW yog qhov kev xaiv ua ntej rau ntau lab tus taw dav dav - kev pabcuam kav thoob ntiaj tebqhov twg seamless kev ua tau zoo tsis tas yuav tsum tau. Nws tus nqi qis dua los ntawm:
Faster, nruam ntau lawmlos ntawm coil.
Cov khoom siv ntau dua(tsawg pov tseg ntau dua li tho lub billet rau seamless).
Yooj yim rau galvanizenyob rau hauv cov kab nruam.
Lub tswv yim yuav khoom:Rau cov ntawv thov tsis yog - tseem ceeb, cov neeg yuav khoom feem ntau tsuas yog thov rau"standard tube"los yog"galvanized yeeb nkab"– qhov no yuav luag ib txwm hais txogA53 Gr.B AW.
Qhov tseem ceeb Distinction: ERW vs. Seamless
| ERW Pipe (A53 Hom E) | Seamless Yeeb Nkab (A53 Hom S / A106) | |
|---|---|---|
| Hla -Section | Nws muaj ib tug pom longitudinal weld seam | Tsis muaj seam, uniform grain qauv |
| Zoo tagnrho rau | Siab- ntim, qis- nqi, daim ntawv thov txheem | High-kev ncaj ncees, siab-siab, kev siv tseem ceeb |
| metallurgy | Weld cheeb tsam muaj qhov sib txawv microstructure (tshav sov- thaj tsam cuam tshuam) | Homogeneous thoob plaws |
Thaum kawg Takeaway: ASTM A53 Qib B, Hom E (ERW)yog coveconomical, welded carbon steel yeeb nkabraukev siv dej dav dav thiab kev siv cov qauv. Nws yog txhais los ntawm nwskev tsim khoom (ERW)thiab yog xaiv feem ntau rautus nqi txuag tshaj seamless yeeb nkabhauv cov kev pabcuam uas tsis yog - tseem ceeb. Nco ntsoov xyuas qhov ntawdniaj hnub High -Frequency (HF) ERWtechnology tau siv rau qhov zoo tshaj plaws.
