—— Sanonpipe, Koj Tus Neeg Muab Kev Ntseeg Siab ntawm Lavxias Standard Precision Steel Tubes

I. Txheej Txheem Txheeb Xyuas: Lub Pob Zeb Tseem Ceeb ntawm Lavxias Txias-Drawn Seamless Tubes

GOST 8734-75(lub npe tag nrho: Cov kav hlau tsis muaj qhov sib txuas txias deformed. Range) yog Lavxias (yav dhau los USSR)tus qauv ntsuas / kev sib xyaw ua kerau cov kav hlau tsis muaj qhov sib txuas uas rub los yog dov txias. Nws tau pib siv rau hnub tim 1 Lub Ib Hlis 1977. Tus qauv no suav nrog cov kav hlau tsis muaj qhov sib txuas uas tsim los ntawm kev dov txias lossis kev kos txias nrogTxoj kab uas hla sab nraud ntawm 1 hli mus txog 200 hlithiabphab ntsa tuab ntawm 0.2 hli mus rau 22 hli.

Cov txheej txheem kos duab txias / dov txias ua rau cov raj muaj qhov tseeb siab heev thiab qhov zoo ntawm qhov chaw. Los ntawm kev hloov pauv txias, cov hlau tau ua kom zoo, thiab cov hlau ceev thiab cov khoom siv kho tshuab tau txhim kho zoo heev. Cov thev naus laus zis ua kom txias no ua rau cov raj zoo dua li cov raj kub dov ib txwm muaj nyob rau hauv cov nqe lus ntawm kev kam rau siab, concentricity thiab qhov tiav ntawm qhov chaw - ua rau lawv zoo tagnrho rau cov cuab yeej precision, cov tshuab hydraulic, cov qauv kho tshuab raug siab thiab ntau lwm yam kev siv.

Tus qauv yog raws li tus qauv thoob ntiaj tebСТ СЭВ 1483-78thiab tau txais kev pom zoo los ntawm USSR State Committee for Standards rau hnub tim 13 Lub Kaum Hli 1975 (Decree No. 2604). Tsab ntawv tam sim no siv tau yog xyoo 2007 rov luam tawm.

II. Txheej Txheem Txheem: Kev Sib Raug Zoo ntawm GOST 8734 thiab GOST 8733

Nyob rau hauv lub system ntawm Russia, cov qauv no yog raws li nram no:GOST 8734-75yuav tsum siv ua ke nrog nws cov lus qhia tshwj xeebGOST 8733-87(Cov kav hlau tsis muaj qhov tsis sib xws - Cov xwm txheej kev siv tshuab). Ua ke lawv tsim cov qauv khoom tiav rau cov kav hlau:

Tus Qauv	Scope	Lub luag haujlwm
GOST 8734-75	Sab nraud txoj kab uas hla, phab ntsa tuab series, dimensional tolerances, ntev hom thiab permissible deviations, theoretical hnyav	"Nws zoo li cas" - qhov ntev
GOST 8733-87	Cov qib hlau, cov tshuaj lom neeg muaj pes tsawg leeg, cov khoom siv kho tshuab, kev ntsuam xyuas cov txheej txheem, kev ntsuam xyuas hydraulic, cov cai tshuaj xyuas, kev cim, kev ntim khoom	"Cov khoom siv dab tsi thiab muaj zog npaum li cas" - cov kev cai tshwj xeeb

Daim ntawv qhia txog kev yuav khoomHauv cov ntaub ntawv engineering lossis cov ntawv xaj yuav khoom,GOST 8733 thiab GOST 8734 yuav luag ib txwm raug hais ua ke- lawv tsim ib khub uas tsis sib cais.

III. Qhov Ntev thiab Kev Faib Tawm

3.1 Qhov ntau thiab tsawg ntawm qhov ntev

Tus qauv GOST 8734-75 npog cov qhov ntev hauv qab no:

Cov Qauv	Ntau yam
Sab nraud txoj kab uas hla	1 – 200 hli
Phab ntsa tuab	0.2 – 22 hli
Ntev (random)	1.5 – 11.5 m
Ntev (ruaj khov)	4.5 – 9 m(kev txwv tsis pub hloov pauv +10 hli)

3.2 Kev faib tawm los ntawm phab ntsa tuab

Raws li qhov sib piv ntawm sab nraud txoj kab uas hla (D) rau phab ntsa tuab (s), cov raj raug muab faib ua plaub pawg:

Pawg	Qhov sib piv ntawm D/s	Kev piav qhia
Phab ntsa nyias heev	Hnub/s > 40	Ultra-lightweight, rau kev siv txuag qhov hnyav
Phab ntsa nyias	D/s = 12.5 – 40	Cov kav dej nyias nyias
Phab ntsa tuab	D/s = 6 – 12.5	Muaj peev xwm siab dua
Phab ntsa tuab heev	Hnub/s < 6	Cov ntawv thov siab heev

3.3 Kev kam rau sab nraud

Sab nraud txoj kab uas hla (hli)	Kev hloov pauv tso cai (hli)
4 – 10	±0.15
>10 – 30	±0.30
>30 – 50	±0.40
>50	±0.8%

3.4 Kev kam rau siab ntawm phab ntsa

Phab ntsa tuab ntau yam (hli)	Kev hloov pauv uas tso cai
≤1.0	±0.12 hli
>1.0 – 5.0	±10%
>5.0	±8%

3.5 Qhov yuav tsum tau ua kom ncaj

Sab nraud txoj kab uas hla (hli)	Qhov siab tshaj plaws curvature ib 'meter' ntev
4 – 8	≤ 3 hli
>8 – 10	≤ 2 hli
>10	≤ 1.5 hli

Lus CimRau cov raj uas muaj sab nraud txoj kab uas hla 20-90 hli, qhov yuav tsum tau ua kom ncaj dua ntawm≤ 1 hli ib 'meter' ntevtuaj yeem pom zoo.

IV. Kev Xam Qhov Hnyav Theoretical

GOST 8734-75 siv cov mis hauv qab no los xam qhov hnyav theoretical ib 'meter' ntawm lub raj:

M = 0.02466148 × s × (Dₙ − s)

Qhov twg:

M= qhov hnyav ib 'meter' (kg)

Dₙ= nominal sab nraud txoj kab uas hla (hli)

s= phab ntsa tuab (hli)

Qhov ceev ntawm cov hlau= 7.85 g/cm³

Cov ntawv qhia ntxiv tus qauv muab cov lus qhia txog qhov hnyav tiav rau txhua qhov kev sib xyaw ua ke ntawm txoj kab uas hla sab nraud thiab phab ntsa tuab ntawm 0.3 hli txog 24 hli. Piv txwv li:

Rau 30 hli OD × 2.5 hli phab ntsa, qhov hnyav theoretical ≈ 1.696 kg / m

Rau 76 hli OD × 4.0 hli phab ntsa, qhov hnyav theoretical ≈ 7.102 kg / m

V. Cov Qib Hlau Muaj

Raws li tus qauv sib koom ua ke GOST 8733-87, cov kav dej txias-kos seamless tuaj yeem tsim los ntawm ntau yam carbon thiab alloy steel qib:

Qib hlau	Hom	Daim ntawv thov ib txwm muaj
Qib 10, Qib 20	Cov hlau ua los ntawm cov pa roj carbon zoo	Kev thauj kua dej, cov qauv dav dav
Qib 35, Qib 45	Cov hlau ua los ntawm cov pa roj carbon zoo	Kev tsim khoom siv, cov khoom siv ua vaj tse muaj zog
09Г2С (09G2S)	Cov hlau tsis tshua muaj hlau	Kev pabcuam kub tsawg, cov qauv muaj zog siab

Kev sib npaug thoob ntiaj tebGOST 8734-75 cov kav dej txias uas tsis muaj qhov sib txuas zoo sib xws hauv cov txheej txheem thiab daim ntawv thov rauASTM A519(seamless carbon thiab alloy steel mechanical tubing).

VI. Cov Teb Thov Ib Txwm Muaj

Ua tsaug rauqhov tseeb ntawm qhov ntev, qhov tiav ntawm qhov chaw du thiab qhov sib npaug zoo heev, GOST 8734-75 cov kav dej txias uas tsis muaj qhov sib txuas tau siv dav hauv:

Daim ntawv thov teb	Kev siv tshwj xeeb	Vim li cas ho xaiv
Cov tshuab ua kom raug	Precision shafts, hydraulic cylinders, pneumatic Cheebtsam	Kev raug siab, kev sib koom ua ke zoo
Cov tshuab hydraulic thiab pneumatic	Cov kav roj siab, cov kab pneumatic	Sab hauv du, tsis tshua muaj dej ntws
Kev lag luam tsheb	Cov raj xa dej poob siab, cov raj xa dej iav	Kev sib npaug ntawm qhov ntev
Petrochemicals	Cov kav dej ntsuas, cov kab ntsuas	Kev tiv thaiv siab txhim khu kev qha
Kev tsim hluav taws xob	Cov kav dej pabcuam boiler	Kev ua haujlwm kub zoo

Piv nrog cov raj kub-kuav, cov txheej txheem txias-kos ua rau GOST 8734-75 raj zoo dua hauv:

Qhov tseeb ntawm qhov ntevOD kam rau ua kom nruj li ± 0.15 hli (qhov me me), zoo dua li cov hlau kub dov.

Qhov zoo ntawm qhov chaw: Sab hauv thiab sab nraud du - npaj rau kev sib dhos meej yam tsis tas siv tshuab ntxiv.

Kev sib koom ua ke: Phab ntsa tuab sib xws, zoo tagnrho rau kev ua tiav tom qab.

VII. Cov Qauv Sib Npaug Thoob Ntiaj Teb

Lub kaw lus txheem	Tus qauv sib xws	Kev piav qhia
Tuam Tshoj (GB)	GB/T 3639-2021	Cov kav hlau tsis muaj steel uas raug rub los yog dov txias
Tebchaws Meskas (ASTM)	ASTM A519	Seamless carbon thiab alloy steel mechanical tubing
Russia (GOST)	GOST 8734-75(qhov ntev) +GOST 8733-87(tej yam kev mob)	Siv ua ke

Daim ntawv qhia txog kev sib npaugTus qauv Suav ze tshaj plaws rau GOST 8734-75 yogGB/T 3639-2021(Cov kav hlau tsis muaj hlau uas raug rub los yog dov txias), uas phim ob qho tib si hauv kev siv (kev ua haujlwm txias siab) thiab cov txheej txheem tsim khoom. Tsis tas li ntawd, GB/T 8162 (cov kav hlau tsis muaj hlau uas muaj cov qauv tsis muaj hlau) thiab GB/T 8163 (cov kav hlau tsis muaj hlau uas xa mus rau cov kua dej) tuaj yeem siv tau, tab sis GB/T 3639 muab qhov sib phim zoo tshaj plaws hauv kev ua haujlwm raug thiab cov txheej txheem ua haujlwm txias.

VIII. Vim li cas ho xaiv Sanonpipe?

Peb qhov zoo	Cov ntsiab lus
Kev txawj ntse txheem	Kev nkag siab tob txog GOST 8733/8734 system - peb txhais tau meej txog txhua yam kev cai ntawm Lavxias
Kev lees paub khoom siv	Muaj ntau yam qib kawm - 10 #, 20 #, 45 #, 09Г2С, thiab lwm yam, nrog rau daim ntawv pov thawj khoom siv tiav
Kev ua kom raug tseeb tau lees paub	Tag nrho cov raj tsim tawm raws li GOST 8734-75 qhov yuav tsum tau ua - qhov tseeb ntawm qhov ntev
Qhov loj tag nrho	Peb muab tag nrho cov kab uas hla sab nraud1–200 hlithiab phab ntsa thicknesses0.2–22 hli
Kev xa khoom sai	Nrog rau cov khoom lag luam sawv ntsug ntawm 20,000 tonnes, cov lus txib ceev ceev raug xa mustsis pub dhau 7-15 hnub
Kev pabcuam kawg-rau-kawg	Txij li kev nug, kev piav qhia txog kev siv tshuab thiab kev hais nqe mus rau cov ntaub ntawv thiab kev xa khoom - kev xa khoom ib zaug xwb
Kev cog lus tsis muaj kev pheej hmoo	Muaj ntau tshaj 240 qhov chaw kuaj xyuas kev tswj xyuas zoo sab hauv, thiab cov ntaub ntawv sau tseg uas tsis muaj qhov sib txawv

IX. Tiv Tauj Peb

Sanonpipe mob siab rau kev muab cov raj hlau tsis muaj qhov tsis zoo GOST 8734-75 uas ua raws li cov neeg siv khoom thoob ntiaj teb. Txawm hais tias koj xav tau cov raj hlau precision, cov raj hydraulic lossis cov raj qauv, peb muab kev txhawb nqa kev tshaj lij thiab kev daws teeb meem yooj ywm.

Piv txwv piav qhia txog cov lus qhia tshwj xeeb:

Труба стальная бесшовная холоднодеформированная 57 × 3.5 ГОСТ 8734-75 / В 20 ГОСТ 8733 87
(Tub hlau tsis muaj qhov txuas txias 57 × 3.5, qhov ntev raws li GOST 8734-75, qib hlau 20, cov xwm txheej kev cai raws li GOST 8733-87)

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Cov Qauv Siab · Kev Xa Khoom Sai · Tsis Muaj Kev Pheej Hmoo · Ntsuab thiab Tsis Muaj Carbon