ASTM A270 Kev Tiv Thaiv Tubing.pdf

ASTM A270 tus qauv yog dab tsi?

ASTM A270 yog ib qho kev qhia tshwj xeeb rau kev huv huv stainless hlau tubing, haum rau kev lag luam uas muaj kev nyiam huv heev, xws li zaub mov, khoom noj siv mis, thiab tshuaj. ASTM A270 sanitary stainless hlau tubing feem ntau yog hais txog me me - txoj kab uas hla tubing, feem ntau 1/2 1/2 ntiv tes, nrog phab ntsa tuab ntawm 0.049 ntiv tes (1.24 hli) txog 0.15 ntiv tes (3.81 hli), haum rau qhov chaw huv si thiab muaj qhov du, tsis muaj qhov tsis xws luag{1.

 

Cov tshuaj muaj pes tsawg leeg ntawm ASTM A270 yog dab tsi?

ASTM A270 qhia txog cov tshuaj muaj pes tsawg leeg rau kev huv huv stainless hlau tubing, nrog rau feem ntau yog qib TP304 thiab TP316. TP304 yog 18/8 stainless hlau nrog 18-20% chromium thiab 8-11% npib tsib xee, thaum TP316 muaj molybdenum rau kev txhim kho corrosion.

 

Mechanical Properties

 

Dab tsi yog qhov ua tiav ntawm ASTM A270?

Mill Finish- Ib qho tiav yam tsis muaj polishing ntxiv los ua haujlwm los ua kom du nto.
Mechanically Polished Surface Finish-Tus neeg yuav khoom tuaj yeem teev ib qho ntawm cov lej ua tiav hauv qab no rau cov khoom siv polished nto:
Finish No. 80-Ib qho av tiav ua los ntawm polishing lub raj nrog cov xov xwm abrasive impregnated nrog No. 80 grit.
Ua Tsis tiav . 120-Tsis muaj. 120 grit.
Ua Tsis tiav . 180-Tsis muaj. 180 grit.
Ua Tsis tiav . 240-Tsis muaj. 240 grit.
Lwm cov txheej txheem polished tiav tuaj yeem pom zoo ntawm tus neeg yuav khoom thiab cov chaw tsim khoom

 

Dab tsi yog qhov kam rau ua ntawm ASTM A270?
ASTM A270 qhia tias phab ntsa tuab ntawm txhua qhov chaw tsis tuaj yeem tshaj 12.5% ​​​​ntawm cov phab ntsa thickness yuav tsum tau.

 

ASTM A270 yog dab tsi?

ASTM A270 sanitary stainless yeeb nkab feem ntau yog hais txog cov yeeb nkab me me, feem ntau ntawm 1/2 "rau 2 1/2", thickness ntawm 0.049 hauv (1.24mm) txog 0.15 hauv (3.81mm). Qhov siab tshaj plaws sab nraud ntawm ASTM A270 tubing yog 12 nti (304.8 mm).

 

ASTM A270 yeeb nkab qhov ntev

ASTM A270 yeeb nkab qhov ntev sib txawv nyob ntawm qib thiab kev tsim khoom, tab sis feem ntau yog li ntawm 1/2 nti mus rau 12 ntiv tes (12.7 hli txog 304.8 hli) nyob rau hauv txoj kab uas hla sab nraud thiab 0.049 ntiv tes rau 0.15 nti (1.24 hli txog 3.81 hli) hauv phab ntsa thickness. Qhov ntev feem ntau yog muag hauv 6-meter units, tab sis kuj tuaj yeem txiav rau cov neeg siv khoom tshwj xeeb. Phab ntsa thickness kam rau ua yog feem ntau ± 10%.

 

Dab tsi yog qhov txawv ntawm ASTM A269 thiab A270?

Qhov sib txawv tseem ceeb yog tias ASTM A269 tubing yog rau kev pabcuam dav dav, thaum ASTM A270 yog rau kev huv, xav tau tus qauv siab dua ntawm qhov chaw tiav thiab kev huv. A270 tswj hwm cov kev xav tau tshwj xeeb sab hauv thiab sab nrauv, feem ntau suav nrog polishing thiab electropolishing, thiab yuav tsum muaj kev tshem tawm cov hlaws sab hauv rau qee yam kev siv, qhov A269 lees txais "tus neeg ua haujlwm tiav" thiab tsis tas yuav ua kom tau raws li cov qauv kev huv huv.