Hlau yeeb nkab sizing tuaj yeem ua rau tsis meej pem - nrog ntau lub npe (DN, NPS, NB), cov lej teev sijhawm (SCH), thiab ntsuas ntsuas (metric thiab imperial), nws yooj yim ua yuam kev uas ua rau xaj cov yeeb nkab tsis raug. Cov lus qhia dav dav no piav qhia tag nrho cov txheej txheem sizing, muab cov kab kos ua tiav, thiab pab koj ntseeg siab qhia cov yeeb nkab steel rau txhua daim ntawv thov.
Nkag siab Steel Pipe Sizing Systems
NPS - Nominal Pipe Size (Imperial)
NPS yog North American tus qauv rau kev ntsuas cov yeeb nkab. Qhov loj "nominal" tsis yog sab hauv txoj kab uas hla (ID) lossis sab nraud txoj kab uas hla (OD) - nws yog tus tsim tsis muaj qhov ntev. Rau NPS 1/8 txog NPS 12, NPS tus lej yog kwv yees li hauv kab hauv nti. Rau NPS 14 thiab loj dua, NPS tus lej sib npaug rau sab nraud txoj kab uas hla.
Tseem ceeb:Sab nraud txoj kab uas hla yog tsau rau txhua NPS loj, tsis hais ntawm phab ntsa thickness. Tsuas yog sab hauv txoj kab uas hla hloov nrog lub sijhawm sib txawv.
DN - Diamètre Nominal (Metric)
DN yog qhov ntsuas thoob ntiaj teb (ISO) sib npaug ntawm NPS. DN qhov tseem ceeb yog kwv yees li tus nqi NPS sib npaug los ntawm 25. Piv txwv li, NPS 2=DN50, NPS 4=DN100, NPS 6=DN150.
Teem caij (SCH) - Phab ntsa Thickness Designation
Daim ntawv teev npe qhia txog phab ntsa thickness ntawm cov yeeb nkab. Cov lej teem sijhawm siab dua txhais tau tias cov phab ntsa tuab dua thiab cov kev ntsuas siab dua. Cov sij hawm uas muaj xws li:
SCH 5 / SCH 5S:Thinest phab ntsa (stainless hlau)
SCH 10 / SCH 10S:Lub teeb ntsa
SCH 40 / SCH 40S:Standard hnyav (feem ntau)
SCH 80 / SCH 80S:Ntxiv hnyav (siab siab)
NWS 160:Hnyav heev (hnyav siab)
XXS (ob npaug ntxiv zog):Thickest muaj
Ua kom tiav Steel Pipe Size Daim Ntawv Qhia
Hauv qab no yog daim ntawv qhia ua tiav rau feem ntau siv cov yeeb nkab steel qhov ntau thiab tsawg. Tag nrho qhov ntev yog raws li ASME B36.10M (welded thiab seamless steel yeeb nkab) thiab ASME B36.19M (stainless steel yeeb nkab).
| NPS | DN | OD (mm) | OD (inch) | SCH | Phab ntsa (mm) | Qhov hnyav (kg / m) |
|---|---|---|---|---|---|---|
| 1/2" | 15 | 21.3 | 0.840 | SCH40 | 2.77 | 1.27 |
| 1/2" | 15 | 21.3 | 0.840 | SCH 80 | 3.73 | 1.62 |
| 3/4" | 20 | 26.7 | 1.050 | SCH40 | 2.87 | 1.69 |
| 1" | 25 | 33.4 | 1.315 | SCH40 | 3.38 | 2.50 |
| 1-1/4" | 32 | 42.2 | 1.660 | SCH40 | 3.56 | 3.39 |
| 1-1/2" | 40 | 48.3 | 1.900 | SCH40 | 3.68 | 4.05 |
| 2" | 50 | 60.3 | 2.375 | SCH40 | 3.91 | 5.44 |
| 2-1/2" | 65 | 73.0 | 2.875 | SCH40 | 5.16 | 8.63 |
| 3" | 80 | 88.9 | 3.500 | SCH40 | 5.49 | 11.29 |
| 4" | 100 | 114.3 | 4.500 | SCH40 | 6.02 | 16.07 |
| 6" | 150 | 168.3 | 6.625 | SCH40 | 7.11 | 28.26 |
| 8" | 200 | 219.1 | 8.625 | SCH40 | 8.18 | 42.55 |
| 10" | 250 | 273.0 | 10.750 | SCH40 | 9.27 | 60.32 |
| 12" | 300 | 323.8 | 12.750 | SCH40 | 10.31 | 79.73 |
Yuav ua li cas xam Steel Pipe Weight
Rau kev yuav khoom thiab kev npaj logistics, nws yog ib qho tseem ceeb los xam qhov hnyav ntawm cov yeeb nkab steel. Cov mis rau xam qhov hnyav ib 'meter' ntawm ib puag ncig steel yeeb nkab yog:
Qhov hnyav (kg / m)=(OD - WT) × WT × 0.0246615
Qhov twg:
OD=Sab nraud (mm)
WT=Phab ntsa Thickness (mm)
0.0246615=tas li rau steel ntom (7.85 g / cm³)
Piv txwv:Rau 2" SCH 40 yeeb nkab (OD=60.3mm, WT=3.91mm):
Luas=(60.3 - 3.91) × 3.91 × 0.0246615=56.39 × 3.91 × 0.0246615 =5.44 kg / m
Txhawm rau xam tag nrho qhov hnyav: Tag Nrho Qhov hnyav=Qhov hnyav ib 'meter' × Yeeb Nkab Ntev × Quantity
Standard yeeb nkab ntev
| Hom | Txheem Length | Sau ntawv |
|---|---|---|
| Ib leeg Random | 4.8 - 6.7m (16-22 ft) | Common rau carbon steel |
| Ob chav Random | 9.1 - 12.2m (30-40 ft) | Txaus siab rau kev khiav ntev |
| Txiav Ntev | Kev cai (1-12m) | Muaj nyob ntawm kev thov |
| Txheem Kho | 6m o 12 m | Feem ntau siv rau export |
Xaiv Lub Sijhawm Zoo
| Daim ntawv thov | Pom zoo teem caij | Kev ntsuas siab |
|---|---|---|
| Tsawg-siab dej/dej | SCH 40/SCH 40S | Mus txog 150 PSI |
| General qauv | SCH40 | - |
| Nruab nrab -kua kua | SCH 80/SCH 80S | Mus txog 300 PSI |
| Siab -siab chav/gas | TIAB SA 160 | Mus txog 600 PSI |
| Siab siab heev | XXS | Txog li 1000+ PSI |
| Stainless hlau (lub teeb) | SCH 5S/SCH 10S | Tsawg siab, huv si |
NPS rau DN hloov pauv ceev siv
| NPS (inch) | DN (hli) | OD (mm) |
|---|---|---|
| 1/4" | 8 | 13.7 |
| 3/8" | 10 | 17.1 |
| 1/2" | 15 | 21.3 |
| 3/4" | 20 | 26.7 |
| 1" | 25 | 33.4 |
| 1-1/2" | 40 | 48.3 |
| 2" | 50 | 60.3 |
| 3" | 80 | 88.9 |
| 4" | 100 | 114.3 |
| 6" | 150 | 168.3 |
| 8" | 200 | 219.1 |
| 12" | 300 | 323.8 |
Cov lus nug nquag
Qhov txawv ntawm NPS thiab NB yog dab tsi?
NPS (Nominal Pipe Size) thiab NB (Nominal Bore) yog qhov tseem ceeb tib yam - ob qho tib si xa mus rau qhov nominal size designation of a pipe. NB feem ntau yog siv nyob rau hauv British thiab Commonwealth cov qauv, thaum NPS yog tus qauv Asmeskas. A 2 "NPS yeeb nkab yog tib yam li 2" NB yeeb nkab - ob leeg muaj OD ntawm 60.3mm.
SCH 40 txhais li cas?
SCH 40 (Schedule 40) yog phab ntsa thickness tsim nyob rau hauv ASME B36.10 tus qauv. Nws yog qhov feem ntau "tus qauv hnyav" cov kav dej lub sijhawm. Piv txwv li, 2 "SCH 40 yeeb nkab muaj OD ntawm 60.3mm thiab phab ntsa tuab ntawm 3.91mm.
Kuv yuav hloov DN rau NPS li cas?
Faib tus nqi DN los ntawm 25 kom tau qhov kwv yees NPS hauv nti. Piv txwv li, DN100 ÷ 25=4, yog li DN100=NPS 4". Ntau precisely, DN=NPS × 25.4, tab sis tus nqi sib npaug (× 25) feem ntau siv hauv kev xyaum.
Xaus
Kev nkag siab txog cov kav hlau loj loj - NPS, DN, thiab Teem caij - yog qhov tseem ceeb rau kev qhia kom raug thiab xaj cov yeeb nkab steel. Los ntawm kev siv cov kab kos thiab cov qauv hauv phau ntawv qhia no, koj tuaj yeem ntseeg siab xaiv cov yeeb nkab qhov ntev rau txhua daim ntawv thov, txawm tias koj xav tau galvanized steel yeeb nkab, carbon steel yeeb nkab, lossis stainless hlau yeeb nkab.
Ntawm Tianjin Kun Yu Technology, peb tsim cov yeeb nkab steel hauv txhua qhov ntau thiab tsawg ntawm 1/2 "rau 12" (DN15-DN300) nrog ntau lub sijhawm. Kev cai loj thiab specifications muaj nyob rau ntawm kev thov. Tiv tauj peb kom tau txais cov lus hais dawb.
Xav tau cov yeeb nkab steel hauv qhov tshwj xeeb?
Peb tsim cov yeeb nkab steel los ntawm 1/2 "mus rau 12" hauv txhua lub sijhawm. Kev cai qhov ntau thiab tsawg muaj.
Tau txais Daim Ntawv Tso Cai Dawb
