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DIN 7990 Hex Bolts

DIN 7990 Hex Bolts

1. Lub zog siab: DIN 7990 hexagon bolts feem ntau muaj cov qib siab zog, xws li 8.8, 10.9, thiab 12.9. Lawv tuaj yeem tiv taus lub zog tensile loj thiab shear rog kom ua tau raws li qhov xav tau ntawm ntau qhov kev ntxhov siab.
2. Kev ntseeg siab: DIN 7990 ntsia liaj qhov rooj muaj kev ua haujlwm ruaj khov thiab txhim khu kev qha zoo, thiab tuaj yeem ua kom muaj kev nyab xeeb thiab txhim khu kev qha ntawm cov qauv steel.
3. Yooj yim rau nruab: Hexagon taub hau ua rau DIN 7990 bolts yooj yim rau nruab los ntawm wrenches uas txuag lub sijhawm thiab txhim kho kev txhim kho kev ua haujlwm.
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Kev tsis
DIN 7990 Hex Bolt yog dab tsi?

 

DIN 7990 hex taub hau bolts yog fasteners tshwj xeeb tsim rau steel qauv engineering thiab nruj me ntsis ua raws li German DIN cov qauv. Tsis zoo li tus qauv hex taub hau bolts (DIN 931/933), DIN 7990 bolts muaj qhov loj dua hla-flats dimension thiab tshwj xeeb yog tsim los rau kev thauj khoom-cov kabmob sib txuas hauv steel ncej, txuas hniav, yees, thiab kev tsim kho vaj tse.

 

Qhov zoo ntawm DIN 7990 Bolts

 

1. Cov cheeb tsam loj dua rau kev txhim kho kev tiv thaiv kom xoob:Lub taub hau hex ntawm DIN 7990 bolts muaj kab pheeb ces kaum dav dua li tus qauv bolts, ua rau thaj chaw sib cuag nrog cov ntxhua khaub ncaws thiab cov phaj sib txuas. Qhov no ua rau muaj kev faib tawm ntau dua ntawm cov clamping quab yuam, ua rau cov bolts tsis tshua muaj kev cuam tshuam hauv kev vibration lossis dynamic loads -ib qho tseem ceeb rau cov txuas hlau steel thiab cov cua ntsawj ntshab.

 

2. Peb Corrosion-Resistant Coatings xaiv los ntawm:Peb cov kev kho saum npoo av muaj: electrogalvanized (ZN), kub-dip galvanized (HDG), thiab thermally diffused zinc / Geomet coatings (TZN / Geomet). Kub-dip galvanizing muab kev tiv thaiv corrosion lifespan ntau tshaj 50 xyoo nyob rau sab nraum zoov; Geomet yog chrome-dawb, ib puag ncig tus phooj ywg txheej uas muab kev tiv thaiv ib puag ncig thiab tsim nyog rau qib siab - lub zog.

 

3. CE-Certified Structural Bolt Assemblies:Thaum ua ke nrog ISO 4032 txiv ntseej los ua EN 15048 cov rooj sib txoos, DIN 7990 bolts dais CE cim thiab SB (Structural Bolting) tsim, ua raws li cov cai ntawm European Cov Khoom Siv Khoom Siv Hluav Taws Xob (CPR). Txhua pob ntawv kaw suav nrog Kev Tshaj Tawm Txog Kev Ua Haujlwm.

 

4. Ib feem Threaded Tsim rau Maximized Shear Strength:DIN 7990 bolts feem ntau muaj ib feem threaded (semi-xov) tsim. Ntu shank du yog nyob rau hauv lub dav hlau shear, muab tag nrho tus ntoo khaub lig -sectional shear zog- uas muaj ib tug tseem ceeb tsim kom zoo dua tag nrho cov threaded bolts nyob rau hauv cov pob qij txha.

 

5. Pov thawj nyob rau hauv ib puag ncig huab:Siv dav hauv cov cua turbine towers, txoj kev loj guardrails, railway infrastructure, petrochemical chaw, fais fab kis, thiab hnub ci mounting systems-cov bolts no tau raug soj ntsuam kom zoo nyob rau lub sij hawm ntev nyob rau hauv daim ntawv thov uas tsis ua hauj lwm yog ib qho kev xaiv.

 

Cov xwm txheej thiab kev kho deg

 

Feem ntau nto tiav rau DIN 7990 tus qauv bolts:

Uncoated / Oiled - Sab hauv tshuab thiab khoom siv

Galvanized (xiav-dawb / xim zinc) - Thickness 5-8 μm, ntsev tsuag tsis kam 72-120 h

Geomet / Dacromet - Thickness 10-15 μm, corrosion kuj 500-1,000 h

Kub-dip galvanizing -- Thickness 40-60 μm; xov tolerances yuav tsum tau kho (pre-tapping pom zoo)

Rau Qib 10.9, qhov kev pheej hmoo ntawm hydrogen embrittlement yog ib qho kev txhawj xeeb loj. Electroplating batches yuav tsum qhia meej txog kev kho hydrogen tshem tawm ( tuav ntawm 190-220℃rau 4-8 teev).

 

Qhov tsis zoo ntawm Cov Qauv Hex Bolts DIN 7990

 

1. Tus nqi tsim khoom ntawm cov qauv hex bolts yog siab.

2. Kev txhim kho cov bolts xav tau cov neeg ua haujlwm kom muaj kev txawj ntse thiab kev paub dhau los.

3. Txhawm rau kom ntseeg tau qhov kev ntseeg tau thiab kev nyab xeeb ntawm kev sib txuas, kev teeb tsa ntawm bolts yuav tsum ua raws li cov qauv tsim nyog.

 

Ntau Daim Ntawv Thov ntawm DIN 7990 Hexagon Head Bolts

 

1. Hauv kev tsim kho thiab kev lag luam, DIN 7990 hexagon taub hau bolts tuaj yeem siv rau kev sib txuas ntawm steel thav duab, thiab kho cov khoom siv kho tshuab.

2. High anti- corrosion thiab durability ua rau DIN 7990 bolts haum rau txuas hniav, yees, chaw ntau pob, thiab lwm yam.

3. Txhawm rau tiv thaiv corrosion yam xws li ntsev thiab noo noo nyob rau hauv ib puag ncig, DIN 7990 bolts nrog siab corrosion kuj yuav tsum tau xaiv.

4. Nrog kev pab los ntawm kub dip galvanized los yog pleev xim rau (SYNERGIA tuaj yeem muab), steel structural bolts tuaj yeem tiv taus cov tshuaj corrosion, kub kub, thiab plua plav.

 

Xaus

 

Txawm nyob rau hauv kev tsim kho kev lag luam, choj engineering, los yog kev thauj mus los, DIN 7990 bolts yog muab ib tug muaj zog guarantee rau steel qauv kev sib txuas. Thaum xaiv bolts, koj tuaj yeem xav txog qhov xwm txheej ib puag ncig, lub peev xwm thauj khoom, thiab kev nyab xeeb. Yog li yog tias koj tseem muaj lus nug, SYNERGIA cov kws tshaj lij txaus siab los teb.

 

Cim npe nrov: din 7990 hex bolts, Tuam Tshoj din 7990 hex bolts manufacturers, lwm tus neeg, Hoobkas

DIN 7990 hex head bolt dimension

 

DIN 7990 HexBolt Dimension

 

Xov size d

M12

M16

M20

M24

M27

M30

pa

  

1,75

2

2,5

3

3

3,5

b

pab dimension

20,5

24,5

28,5

33,0

35,5

38,5

c

max.

0,6

0,8

0,8

0,8

0,8

0,8

min.

0,3

0,4

0,4

0,4

0,4

0,4

da

max.

14,7

18,7

24,4

28,4

32,4

35,4

ds

Nominal loj

12

16

20

24

27

30

min.

11,30

15,30

19,16

23,16

26,16

29,16

max.

12,70

16,70

20,84

24,84

27,84

30,84

dw

min.

16,4

22,0

27,7

33,2

38,0

42,7

e

min.

19,85

26,17

32,95

39,55

45,20

50,85

k

Nominal loj

8

10

13

15

17

19

min.

7,55

9,25

12,10

14,10

16,10

17,95

max.

8,45

10,75

13,90

15,90

17,90

20,05

kw

min.

5,28

6,47

8,47

9,87

11,27

12,56

r

r

0,6

0,6

0,8

0,8

1,0

1,0

s

Nominal loj=max.

18

24

30

36

41

46

min.

17,57

23,16

29,16

35,00

40,00

45,00