Thaum xaiv cov yeeb nkab steel rau cov tshuab hluav taws xob, cov yeeb nkab teem caij txiav txim siab ntawm phab ntsa thickness, lub peev xwm siab, qhov hnyav, thiab tus nqi installation.
- SCH 10 yog qhov kev xaiv pheej yig tshaj plaws rau cov tshuab ntub dej ntub dej niaj hnub, muab cov peev txheej zoo heev thiab kev teeb tsa yooj yim.
- SCH 30 muab kev sib haum xeeb ntawm SCH 10 thiab SCH 40 tab sis tsis tshua muaj teev nyob rau hauv cov phiaj xwm hluav taws xob niaj hnub no.
- Sch40 tseem yog tag nrho -ib puag ncig tus qauv hluav taws kub sprinkler yeeb nkab nrog tag nrho kev sib txuas thiab qhov loj me.
- Sch80 hnyav-phab ntsa siab-cov yeeb nkab siab rau hnyav siab-load tej yam kev mob
Hauv ntau lub tshuab ua luam dej, SCH 10 (ASTM A795) thiab SCH 40 (ASTM A53 lossis ASTM A795) yog cov kev xaiv ntau tshaj plaws.
Thaum SCH 10 thiab SCH 40 yog cov sij hawm siv ntau tshaj plaws hauv kev tiv thaiv hluav taws, SCH 30 thiab SCH 80 raug xaiv rau cov kev xav tau tshwj xeeb.Yog li hauv kab lus no, koj yuav kawm txog qhov txawv ntawm SCH 10 thiab SCH 40; Nyob rau tib lub sijhawm, peb kuj tau muab piv thiab sau cov plaub yam ntawm Sch 10 / Sch 30 / Sch 40 / Sch 80 carbon steel kav rau hluav taws kub.
Teem caij 40 Hluav Taws Sprinkler Yeeb Nkab
Teem caij 40 (abbreviated Sch 40) hluav taws sprinkler yeeb nkab yog tus qauv nruab nrab -phab ntsa carbon steel yeeb nkab dav siv nyob rau hauv kev tiv thaiv hluav taws engineering raws li American piping qauv. Pom zoo los ntawm NFPA 13, nws haum yuav luag txhua hom kev sib txuas cov kav dej vim nws cov phab ntsa tuab txaus, muaj zog sib npaug thiab ntau yam kev sib txuas.
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Txoj kev sib txuas yooj yim
Threaded kev sib txuas: Zoo tagnrho rau cov kab me me ncaj qha txuas mus rau lub taub hau sprinkler;
Grooved mechanical couplings: Siv rau loj kab rov tav mains thiab ntsug risers;
Welded pob qij txha: Nyiam rau cov yeeb nkab qhuav, ua ntej- ua haujlwm thiab siab - lub tshuab hluav taws kub.
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Corrosion Protection Variants
Black uncoated Sch 40 yeeb nkab: Tsim los rau cov tshuab ntub dej ntub dej, nruab nrog sab hauv los tiv thaiv - cov kab mob microbial los tswj MIC (microbiologically influenced corrosion).
Kub-dip galvanized Sch 40 yeeb nkab: Ua raws li cov txheej txheem ASTM A123 txheej, siv rau qhuav, ua ntej- nqis tes ua, txias los tiv thaiv- khov thiab sab nraum zoov cov kav dej.
FBE coatedSch 40 yeeb nkab: epoxy hmoov rau sab hauv, sab nrauv lossis ob qho tib si rau kev tiv thaiv corrosion zoo nyob rau hauv ntug dej hiav txwv, sab hauv tsev thiab ntiav cov faus rau hauv cov kav dej.
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Cov qauv siv tau
ASTM A795 Cov Lus Qhia Tshwj Xeeb: Thawj tus qauv rau dub thiab kub -dip galvanized steel kav tshwj xeeb uas tsim los rau kev pab cuam tua hluav taws.
ASTM A53: General carbon steel yeeb nkab uas tuaj yeem siv los ua lwm txoj hauv kev.
Yuav tsum tau muaj kev pom zoo thib peb - tog:UL npelos yog FM Pom Zoo; tag nrho cov khoom sib txuam, couplings thiab threaded Cheebtsam yuav tsum tuav cov ntawv pov thawj sib npaug.
Teem caij 10 Hluav Taws Sprinkler Yeeb Nkab
Teem caij (ua luv raws li Sch) yog phab ntsa thickness cais cov txheej txheem rau American standard steel kav. Qhov me me ntawm lub sij hawm tus naj npawb, lub thinner cov yeeb nkab phab ntsa. Teem sijhawm 10 yog lub teeb nyias nyias- cov yeeb nkab phab ntsa tshwj xeeb tsim los rau cov tshuab hluav taws xob hluav taws xob, tau lees paub thiab tso cai los ntawm NFPA 13 rau cov kav dej loj hauv kev sib txuas. Nws yog tsuas yog tsim rau grooved coupling kev sib txuas.
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Kev txwv kev sib txuas rau NFPA Codes
Threading yog nruj me ntsis txwv tsis pub rau Teem caij 10 cov kav dej, vim tias cov phab ntsa nyias tsis tuaj yeem txhawb nqa tag nrho cov yeeb nkab xov. Tsuas yog ob txoj kev sib txuas:
Grooved mechanical coupling (ntub sprinkler mains);
Welded pob qij txha, dav saws rau cov yeeb nkab qhuav thiab ua ntej -txoj kev sprinkler tshuab.
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Hom Daim Ntawv Thov Scenarios
Tsim nyog Scenarios rau Teem 10 Hluav Taws Sprinkler Yeeb Nkab
Main risers thiab loj kab rov tav mov mains nyob rau hauv malls, chaw ua hauj lwm cov tsev thiab cov chaw tsim khoom
Loj qab nthab piping qhov twg txo cov txheej txheem tuag load yog yuav tsum tau
Pa ntub dej tsis siv neeg tua hluav taws cov tshuab
Teem caij 10 vs Teem caij 40 Hluav Taws Sprinkler Yeeb Nkab
Sch 40 cov kav dej muaj cov phab ntsa tuab dua li Teem sijhawm 10 cov khoom sib txuas nrog tib lub npe yeeb nkab loj (NPS). Lawv qhov hnyav dua muab kev tiv thaiv corrosion txaus thiab kev ua haujlwm zoo dua tiv thaiv pob, kev sib tsoo thiab ntev - lub sij hawm corrosion. Lub phab ntsa tuab kuj muab qhov ntsuas siab ntau dua.
| Hluav taws kub sprinkler steel yeeb nkab | ||||
| NPS (inch) |
Sab nraud txoj kab uas hla mm |
Thickness Sch10 mm |
Thickness Sch40 mm |
Xaus |
| 1/2" | 21.3 | - | 2.77 |
Grooved, Threaded, Plain xaus
|
| 3/4" | 26.7 | 2.11 | 2.87 | |
| 1" | 33.7 | 2.77 | 3.38 | |
| 1 1/4" | 42.2 | 2.77 | 3.56 | |
| 1 1/2" | 48.3 | 2.77 | 3.68 | |
| 2" | 60.3 | 2.77 | 3.91 | |
| 2 1/2" | 73.0 | 3.05 | 5.16 | |
| 3" | 88.9 | 3.05 | 5.49 | |
| 3 1/2" | 101.6 | 3.05 | 5.74 | |
| 4" | 114.3 | 3.05 | 6.02 | |
| 5" | 141.3 | 3.40 | 6.55 | |
| 6" | 168.3 | 3.40 | 7.11 | |
| 8" | 219.1 | 4.78 | 7.04 | |
| 10" | 273.1 | 4.78 | 7.80 | |
Kev sib piv luv luv thiab cov ntsiab lus ntawm Sch10 thiab Sch40
Qhov hnyav & Cov qauv Load
Teem sijhawm 10 lub teeb nrog cov khoom siv hluav taws xob tsawg; Teem caij 40 hnyav yuav tsum tau muaj zog hangers
Kev xaiv kev sib txuas
Teem caij 10 - grooved los yog welded nkaus xwb (tsis muaj threading); Teem caij 40 - grooved, welded los yog threaded
Hydraulic Efficiency
Teem sijhawm 10 ID loj dua, kev sib txhuam qis dua; Teem sijhawm 40 ID me dua, dej tsis kam
Khoom siv & Cov Nqi Them Nqi
Teem sijhawm 10 cov yeeb nkab qis thiab cov nqi zog; Teem sijhawm 40 cov khoom siv siab dua thiab kev siv nyiaj installation
Service Life & Corrosion Margin
Teem sijhawm 10 qhov kev tiv thaiv corrosion, lub neej ua haujlwm luv dua hauv qhov chaw hnyav; Teem sijhawm 40 phab ntsa tuab nrog superior corrosion kuj
Tej kev siv
Teem caij 10 rau cov loj loj, kab rov tav khiav thiab risers nyob rau hauv tsev ntub dej; Teem sijhawm 40 rau cov kab txuas txuas, siab - lub tshuab siab, qhuav / ua ntej- cov kav dej ua haujlwm, thiab cuam tshuam- thaj chaw raug xws li warehouses thiab chaw nres tsheb
Cov ntsiab lus sib piv: Sch 10 / Sch 30 / Sch 40 / Sch 80 Hluav Taws Sprinkler Carbon Steel Yeeb Nkab
Phab ntsa Thickness & Nyhav (Tib NPS)
Ranking: Sch10 < Sch30 < Sch40 < Sch80
- Sch 10: Ultra- phab ntsa nyias, lub teeb hnyav tshaj plaws, lub qab nthab me me load.
- Sch 30: Nruab nrab- phab ntsa nyias, qhov hnyav nruab nrab, qib hloov pauv ntawm Sch10 thiab Sch40.
- Sch 40: Txheem nruab nrab- phab ntsa tuab, universal hauv paus rau kev tiv thaiv hluav taws.
- Sch 80: Hnyav phab ntsa, hnyav tshaj plaws, yuav tsum hnyav -cov kav dej txhawb nqa.
Txoj Kev Tso Cai Sib Txuas (NFPA 13 Txoj Cai)
- Sch 10: Kev txwv nruj nruj; tsuas yog grooved coupling & vuam tso cai.
- Sch 30: Threading tsis pom zoo rau ntau qhov ntau thiab tsawg; txwv rau grooved thiab welded pob qij txha.
- Sch 40: Kev hloov pauv tau yooj yim - threaded, grooved thiab welded kev sib txuas tau pom zoo.
- Sch 80: Tag nrho compatibility nrog threading, grooving thiab vuam; phab ntsa tuab kom muaj kev ruaj ntseg sib sib zog nqus threads.
Ua hauj lwm siab ntsuas
Ranking: Sch10 < Sch30 < Sch40 < Sch80
- Sch 10: Rated 700 PSI, tsuas yog rau tus qauv qis -siab ntub dej lub ntsiab.
- Sch 30: Qhov ntsuas nruab nrab siab, siab dua Sch10 tab sis qis dua Sch40.
- Sch 40: Standard 1500 PSI, haum rau feem ntau cov pa qhuav, ua ntej- kev ua haujlwm thiab cov tshuab ua haujlwm siab.
- Sch 80: Kev ntsuas siab ntxiv, tsim los rau siab - zoo li qub - cov kav dej kub siab.
Mechanical Strength & Corrosion Allowance
- Sch 10: Tsawg kawg ntawm kev xeb, yooj yim dented lossis ruptured los ntawm lub cev cuam tshuam; luv kev pab cuam lub neej nyob rau hauv corrosive ib puag ncig.
- Sch 30: Kev cuam tshuam nruab nrab thiab kev tiv thaiv corrosion, zoo dua kav ntev dua Sch10.
- Sch 40: Ntau phab ntsa tuab rau kev cuam tshuam thiab ntev - lub sij hawm tiv thaiv - kev ua haujlwm corrosion hauv qhov chaw ntub dej.
- Sch 80: Cov kev cuam tshuam siab tshaj plaws thiab qhov hnyav tshaj plaws corrosion, tiv taus kev puas tsuaj loj thiab tshuaj lom neeg corrosion.
Cov Loj Muaj Feem Ntau
- Sch 10: Tsuas yog cov kab loj loj NPS 2 "thiab siab dua; cov ceg me me tsis tsim.
- Sch 30: Feem ntau loj-ntev NPS 2"~8"; qhov me me tsis tshua tsim khoom.
- Sch 40: Ua kom tiav ntau yam NPS 1/2 "rau NPS 8", npog tag nrho cov ceg thiab lub ntsiab.
- Sch 80: Tag nrho qhov loj me, nquag xaiv rau me me siab - cov kav dej siab.
Anti-Corrosion Txheej Compatibility
- Tag nrho plaub lub sijhawm txhawb nqa dub liab qab, kub-dip galvanized, FBE dual txheej, duplex galvanized-epoxy, 3PE thiab cement mortar hauv ob sab phlu.
- Qhov sib txawv tseem ceeb: FBE txheej ntawm Sch10/30 chips yooj yim thaum lub sij hawm grooving thiab xav tau qhov yuav tsum tau kov-up; Sch40 / Sch80 tuab phab ntsa tiv thaiv txheej zoo dua thaum tsim.
Hom Daim Ntawv Thov Scenarios
- Sch 10: Shielded sab hauv tsev ntub dej- kab rov tav mains & risers; prioritize lub teeb structural load, tsis muaj kev sib tsoo.
- Sch 30: Sab hauv tsev nyiaj siv ua haujlwm ntub dej hauv lub cev xav tau kev ua haujlwm zoo dua li Sch10 yam tsis muaj Sch40 qhov hnyav tag nrho.
- Sch 40: Universal tag nrho - lub hom phiaj yeeb nkab rau cov ceg ntoo, qhuav / ua ntej - cov tshuab ua haujlwm, chaw nres tsheb / warehouses thiab thaj chaw me me.
- Sch 80: Siab- cov kav hluav taws kub siab, ua rau muaj kev cuam tshuam loj heev hauv cheeb tsam, hauv av corrosive mains thiab industrial hnyav- ib puag ncig corrosion.
Cov lus nug nquag
Q: Lub sij hawm twg cov yeeb nkab feem ntau siv rau cov tshuab hluav taws xob?
SCH 10 carbon steel yeeb nkab yog cov kev xaiv uas feem ntau siv rau cov tshuab ntub dej ntub dej niaj hnub vim tias nws yog lub teeb yuag, tus nqi - siv tau, thiab tsim nyog rau cov tsev lag luam feem ntau.
SCH 40 feem ntau yog xaiv rau lub hauv paus, risers, thiab thaj chaw uas xav tau kev siv tshuab ntau dua.
Q: Vim li cas SCH 10 nyiam tshaj SCH 40 hauv ntau lub tshuab nqus dej?
SCH 10 muaj ntau qhov zoo:
Cov khoom siv qis dua
Qhov hnyav dua
Kev txhim kho sai dua
Txo cov nqi zog
Loj nyob rau hauv txoj kab uas hla rau kev txhim kho cov dej ntws
Kev thauj mus los yooj yim dua thiab tuav
Cov txiaj ntsig no ua rau SCH 10 zoo tagnrho rau kev lag luam feem ntau cov khoom siv hluav taws xob.
Q: Lub sijhawm twg yog qhov zoo tshaj plaws rau kev tiv thaiv hluav taws?
Cov chaw lag luam feem ntau xav tau SCH 40 lossis SCH 80, nyob ntawm:
Kev khiav hauj lwm siab
Mechanical loading
Corrosive ib puag ncig
Project specifications
Cov qauv tiv thaiv hluav taws
Q: Puas yog SCH 10 yeeb nkab muaj zog txaus rau cov tshuab tua hluav taws?
Yog lawm. SCH 10 steel yeeb nkab yog tsim tshwj xeeb rau qis - mus rau nruab nrab - kev tiv thaiv hluav taws kub thiab tau txais dav hauv NFPA 13 thaum ntsia raws li cov cai thiab cov kev qhia tshwj xeeb.
Tiv tauj peb kom paub ntau ntxiv txog ASTM A 795 Hluav Taws Sprinkler Carbon Steel Pipe specifications thiab cov khoom xaiv, los yog thov ib nqe lus hais txog tus nqi ntxiv hnub no.
