ASME B16.11 Hex Lub taub hau Bushingyog ib tug forged threaded haum nrog txiv neej (sab nraud) NPT threads ntawm lub loj kawg thiab poj niam (sab hauv) NPT threads ntawm lub me kawg. Lub hex seem nyob rau sab saum toj muab ib lub tiaj tiaj rau ib tug ciaj ntswj. Nws txo cov yeeb nkab loj nyob rau hauv ib tug threaded los ua ke yam tsis tas yuav tsum tau ntxiv fittings downstream.Tiv tauj pebkom tau txais kev tsocai dawb thiab qauv!
NPT vs BSPT: hom xov twg los qhia
Qhov no yog qhov chaw hla ntau - ciam teb xaj yuav nyuaj. ASME B16.11 txhais qhov ntev rau NPT threads ib ASME B1.20.1. Tus qauv tsis suav nrog BSPT (BS EN 10226) lossis BSPP xov. Txawm li cas los xij, ib feem ntau ntawm cov cuab yeej siv thiab cov txheej txheem siv nyob rau hauv Middle East thiab Europe muaj BSP- xov xov ports.
- NPT threads- 60℃xov kaum, taper 1:16. Tus qauv rau Asmeskas- cov cuab yeej tsim thiab feem ntau North American- specification EPC tej yaam num. Siv rau: Saudi Aramco, ADNOC, QatarEnergy, US spec EPC.
- BSPT xov- 55℃xov kaum (Whitworth daim ntawv), taper 1:16. Feem ntau ntawm cov teb chaws Europe- keeb kwm instrumentation thiab cov khoom qub GCC ua rau British specifications. Kev sib hloov tsis tau nrog NPT - yuam kev koom tes ua rau lub plab thiab txoj kev xau tam sim. Siv rau: European instrumentation, British-spec installations, Shell DEP tej yaam num.
Cov ntaub ntawv qib
| Qib | Txuj | Tej yam siv | Sau ntawv |
|---|---|---|---|
| A182 F304/F304L | ASTM A182 Cov Lus Qhia Tshwj Xeeb | Dilute acids, zaub mov -qib, me chloride | Qib L rau weld- cov khoom sib txuas kom tsis txhob muaj kev puas tsuaj. |
| A182 F316/F316L | ASTM A182 Cov Lus Qhia Tshwj Xeeb | Seawater txias, tsim dej, chloride ntws | Mo ntxiv (2–3%) yog qhov sib cais 316 ntawm 304. L qib yog tus qauv rau offshore GCC. |
| A182 F51 (S31803) | ASTM A182 Cov Lus Qhia Tshwj Xeeb | Siab -chloride ua dej, CO2 txhaj | Duplex yields roughly double the strength of 316L. Check PREN >35 rau Gulf seawater. |
| A182 F60/F65 (S32750) | ASTM A182 Cov Lus Qhia Tshwj Xeeb | Ntxim ua dej, offshore umbilicals | Super duplex, PREN typically >40. Nqe premium 4–6x tshaj 316L yog ib txwm. |
|
Nominal loj |
Ntev |
Square qhov siab |
Dav flats |
Lub taub hau taub |
Ntev |
Hex qhov siab |
Hex qhov siab |
Hex qhov siab |
|
|
DN |
NPS |
Amin |
Bmin |
Cmin |
Emin |
Dmin |
Hmin |
Gmin |
Fmin |
|
6 |
1/8 |
10 |
6 |
7 |
10 |
35 |
6 |
一 |
11 |
|
8 |
1/4 |
11 |
6 |
10 |
14 |
41 |
6 |
3 |
16 |
|
10 |
3/8 |
13 |
8 |
11 |
18 |
41 |
8 |
4 |
18 |
|
15 |
1/2 |
14 |
10 |
14 |
21 |
44 |
8 |
5 |
22 |
|
20 |
3/4 |
16 |
11 |
16 |
27 |
44 |
10 |
6 |
27 |
|
25 |
1 |
19 |
13 |
21 |
33 |
51 |
10 |
6 |
36 |
|
32 |
11/4 |
21 |
14 |
24 |
43 |
51 |
14 |
7 |
46 |
|
40 |
11/2 |
21 |
16 |
28 |
48 |
51 |
16 |
8 |
50 |
|
50 |
2 |
22 |
18 |
32 |
60 |
64 |
18 |
9 |
65 |
|
65 |
21/2 |
27 |
19 |
36 |
73 |
70 |
19 |
10 |
75 |
|
80 |
3 |
28 |
21 |
41 |
89 |
70 |
21 |
10 |
90 |
|
100 |
4 |
32 |
25 |
65 |
114 |
76 |
25 |
13 |
115 |
FAQ
Q: Qhov txawv ntawm Chav Kawm 3000 thiab Chav Kawm 6000 yog dab tsi?
Chav kawm 3000 yog ntsuas rau siv nrog Sch 80 yeeb nkab; Chav Kawm 6000 rau Sch 160. Qhov 6000# haum yog lub cev loj dua hauv tib NPS. Chav kawm 6000 feem ntau yog siv rau siab - ntsuas ntsuas siab -offs, txhaj tshuaj quills, thiab lub taub hau zoo- sib txuas.
Q: Kuv puas tuaj yeem siv lub taub hau hex rau ob qho - txo qhov loj me (piv txwv li, 2" rau 1/2")?
Tsis nyob hauv ib qho kev sib haum xeeb. ASME B16.11 tsuas yog them ib zaug xwb -txo cov kauj ruam. Rau ob-qhib txo qis, siv qhov txo qhov sib txuas ntxiv rau qhov thib ob bushing, lossis ib qho kev cai adapter uas xav tau kev tsim nyog nyias.
Q: NPS txhais li cas hauv qhov loj me?
NPS yog tus tsim dimensionless, tsis yog cov yeeb nkab OD. Rau hex bushing, NPS yog hais txog txiv neej (loj) kawg xov. "NPS 1 × NPS 1/2"=1-inch txiv neej NPT xov sab nraud, 1/2-nti poj niam NPT xov sab hauv.
Q: ASME B16.11 hex taub hau bushings cim li cas?
Yam tsawg kawg nkaus: cov npe chaw tsim khoom / kev lag luam, qib khoom, qib siab, NPS. Ntawm qhov me me - tho qhov fittings (1/2 "thiab hauv qab), lub hnab / lub thawv cim tau txais. Cov cua sov ntawm qhov haum yuav tsum phim MTC. Cov lej tsis raug lossis tsis muaj cua sov ntawm cov haujlwm tau lees paub yog NCR siv tau.
Q: Puas muaj lub qhov (socket) -weld version?
Tsis yog. Lub hex bushing geometry yog threaded - nkaus xwb. Lub qhov (socket) - vuam txo qhov ntxig yog qhov ze tshaj plaws welded lwm txoj.
Q: Dab tsi kam rau ua rau F qhov ntev (hex hla flats)?
-0.00 / +1.59 hli rau hex loj txog 50.8 hli; -0.00 / +3.18 mm saum toj no. Oversized yog tso cai, undersized tsis.
