1. qhov sib txawv ntawm Astm A106 thiab ASTM A252
* ** A106: ** Tus qauv rau ** CEAMULE cov yeeb nkab hlau ** Rau cov khoom siv hluav taws xob siab (E {} Nws tau tsim los daws qhov kub thiab txias .
* ** A252: ** Tus qauv rau ** welded steel yeeb nkab txhawb nqa lub zog (piling)
### 2. sib txawv ntawm Astm A252 Qib 2 thiab qib 3
* ** QIB 2: ** Qhia tawm yam tsawg kawg nkaus lub zog muaj zog ntawm ** 40, {}}}}}}}}}}}}}}}}}}}}}} {.
* ** QIB 3: ** Qhia meej meej txog lub zog muaj zog lossis tsav tsheb los ntawm cov khoom muaj zog dua lossis tsav tsheb los ntawm cov av nyuaj.
### 3. sib txawv ntawm Astm A53 thiab Astm A252
* ** A53: ** Tus qauv rau ** General-cov ntaub ntawv tso tawm cov roj ntsha (hom kev siv tshuab (fencing zoo {} {4 4 {.
* ** A252: ** Tus qauv tshwj xeeb rau ** Welded steel yeeb nkab muaj los yog qhov ntsuas hluav taws xob hauv av, tsis yog rau kev txhawb nqa sab hauv, tsis yog rau A53 hom E /106.
### 4. sib txawv ntawm Astm A53 Gr B thiab Astm A106 Gr
* ** A53 GR (hom S lossis ERW): ** Yuav pab ob ** wrded (hom E / F,
* ** A106 GR: ** Tus qauv tshwj xeeb rau ** cov khoom siv ua kom zoo li cov pa roj carbon, tshwj xeeb yog cov khoom siv roj carbon ntau dua li cov khoom siv roj carbon monoxide ({{{} Qhov kev xaiv zoo tshaj plaws rau kev siv siab loj / siab-kub kev siv kub.
### 5. qhov sib txawv ntawm Astm A500 thiab ASTM A252
* ** A500: ** Tus qauv rau ** Tsim cov khoom siv zoo li cov khoom siv rau qib (a, B, C, D) raws li cov duab thiab Yuav tsum .}
* ** A252: ** Tus qauv tshwj xeeb rau ** Welded cylindrical cylindrical muaj peev xwm rau cov tswv yim uas xav tau rau hauv av, tsis yog muaj ntau yam zoo li 500.
