Cov ntsiab lus ceev
Nws yog dab tsi:Tus qauv rau dub thiab kub -dipped galvanized, welded thiab seamless steel yeeb nkab.
Kev Siv Tseem Ceeb:Kev siv tshuab thiab siab, thiab tseem siv tau zoo tib yam hauv chav dej, dej, cua, thiab roj kab.
Qhov tseem ceeb Advantage:Zoo heev sib npaug ntawm lub zog, weldability, muaj, thiab nqi. Qib B yog qhov muaj zog dua, ntau qhov sib txawv piv rau Qib A.
1. Scope thiab Daim Ntawv Thov
ASTM A53 npog seamless thiab welded steel yeeb nkab nrog lub nominal phab ntsa thickness. Nws yog haum rau:
Siab Piping:Siv nyob rau hauv lub tshuab nqa cov kua thiab gases nyob rau hauv siab.
Kev siv tus qauv:Yuav siv tau rau cov hom phiaj (piv txwv li, tes tuav, kev txhawb nqa), txawm hais tias ASTM A500 yog tus qauv ntau dua tshwj xeeb rau cov qauv tubing.
Kev thauj mus los:Kev thauj dej, roj, roj, cua, thiab chav.
Lus Cim Tseem Ceeb:Thaum A53 yeeb nkab tuaj yeem siv rau cov tshuab tua hluav taws,ASTM A795 Cov Lus Qhia Tshwj Xeebyog tus qauv ntau dua thiab feem ntau xav tau rau daim ntawv thov tshwj xeeb ntawd.
2. Hom thiab cov txheej txheem tsim khoom
ASTM A53 cov kav dej yog tsim los ntawm peb hom:
Hom F: Furnace taub qab -welded, nruam weld. Ua los ntawm mechanically ua hauj lwm kub - ua skelp los ntawm lub cub tawg.Feem ntau tsuas muaj nyob rau qib A.Tsis siv rau flanging lossis dabtsi yog khoov.
Hom E: Ehluav taws xob-tsis kam welded (ERW). Tsim los ntawm skelp thiab weld seam yog tsim los ntawm kev siv hluav taws xob tiv thaiv txheej txheem. Muaj nyob rau hauv Qib A thiab B.
Hom S: Syooj yim. Ua los ntawm kev tho lub pob zeb ntawm cov hlau los ua ib lub plhaub hollow yam tsis muaj vuam seam. Muaj nyob rau hauv Qib A thiab B.
3. Chemical Composition (Qib B)
Cov tshuaj muaj pes tsawg leeg yog qhov tseem ceeb ntawm cov khoom siv, tshwj xeeb tshaj yog weldability.
| Lub ntsiab | Kev sib xyaw (%) |
|---|---|
| Carbon (C), max | 0.30% |
| Manganese (Mn), max | 1.20% |
| Phosphorus (P), max | 0.05% |
| Sulfur (S), max | 0.045% |
| *Copper (Cu), min | 0.40% |
| *Nickel (Ni), max | 0.40% |
| *Chromium (Cr), max | 0.40% |
| *Molybdenum (Mo), max | 0.15% |
| *Vanadium (V), max | 0.08% |
Note: Cov "" qhia tias cov ntsiab lus no (Cu, Ni, Cr, Mo, V) muaj qhov txwv siab tshaj plaws tsuas yog thaum tus neeg yuav khoom yuav tsum tau Copper Steel.*
4. Mechanical Properties (Qib B)
Cov no yog cov tseem ceeb lub zog qhov tseem ceeb uas txhais cov yeeb nkab.
| Khoom | Kev xav tau |
|---|---|
| Tensile zog, min | 415 MPa (60,000 psi) |
| Yield zog, min | 240 MPa (35,000 psi) |
| Elongation% | Nws txawv raws li phab ntsa thickness thiab cov qauv, tab sis tau teev nyob rau hauv tus qauv. |
Sib piv rau Qib A:Qib A muaj lub zog tensile qis qis (330 MPa / 48,000 psi) thiab qis qis qis qis zog (205 MPa / 30,000 psi). Qhov no ua rauQib B qhov kev xaiv muaj zog dua thiab nquag teev ntau dua.
5. Cov Lus Qhia Tshwj Xeeb thiab Kev Qhia
Marking:Cov kav dej yog stenciled lossis stamped nrog cov ntaub ntawv hauv qab no:ASTM A53, Qib B, Hom (E lossis S), Loj, Teem caij Number, Chaw tsim tshuaj paus lub npe los yog Trademark, thiab cua sov tooj.
Teem caij:Qhov no txhais cov phab ntsa thickness. Cov sij hawm sib xws yogTeem caij 40(Standard Nyhav) thiabTeem caij 80(Ntxiv Muaj Zog).
Ua tiav:
Dub:Plain steel, feem ntau nrog lub teeb roj txheej los tiv thaiv xeb.
Galvanized:Coated nrog ib txheej ntawm zinc (los ntawm cov txheej txheem kub -dip) rau superior corrosion kuj.
6. Qhov zoo thiab qhov tsis zoo
Qhov zoo:
Siab zog:Qib B muaj kev tswj xyuas zoo thiab lub zog muaj zog.
Tus nqi -zoo:Yooj yim muaj thiab kuj pheej yig.
Weldable thiab Machinable:Yooj yim rau fabricate thiab koom.
Ntau yam:Muaj nyob rau hauv seamless thiab welded daim ntawv, dub los yog galvanized.
Qhov tsis zoo:
Corrosion:Cov hlau dub yog qhov yooj yim rau xeb thiab yuav tsum tau pleev xim lossis lwm yam kev tiv thaiv yog siv nyob rau hauv ib puag ncig corrosive.
Tsis yog rau High -Temp/Specialty Service:Rau siab -kub, qis- kub, lossis cov kev pabcuam corrosive, lwm cov qauv xws li ASTM A106 lossis ASTM A335 yuav tsim nyog dua.
Cov ntawv thov siv
Cov kav dej thiab HVAC:Cov kab dej thiab cua.
Roj thiab Roj:Sib sau cov kab, qis -siab kis.
Fencing thiab Handrails:Kev txhawb nqa tus qauv.
Kev tsim kho:Scaffolding (txawm hais tias tshwj xeeb specs siv).
Industrial kav dej:Rau compressed cua, txheej txheem dej, thiab lwm yam.
A53 Qib B vs A106 Qib B
Qhov no yog ib qho kev tsis meej pem. Lawv zoo sib xws tab sis muaj qhov sib txawv tseem ceeb:
| Feature | ASTM A53 Qib B | ASTM A106 Qib B |
|---|---|---|
| Scope | Lub hom phiaj dav dav, siab, & qauv | High -kev pabcuam kubnkaus xwb |
| Kev tsim khoom | Seamless & Welded | Seamless nkaus xwb |
| Chemistry | Kev txwv me ntsis | Tighter tswj ntawm carbon, silicon, thiab manganese |
| Siv dav | Cov kav dej dav dav, qis -siab chav | Boiler raj, superheaters, siab -siab/temp chav |
Hauv ntau qhov qis - mus rau - qhov nruab nrab kub daim ntawv thov, lawv suav hais tias hloov pauv tau, tab sis A106 yog qhov kev xaiv tshwj xeeb rau kev ua haujlwm kub siab -.
Hauv cov ntsiab lus,ASTM A53 Qib B yog cov neeg ua haujlwm ntawm cov pa roj carbon steel yeeb nkab ntiaj teb, muaj nuj nqis rau nws lub zog, versatility, thiab kev lag luam.
