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Flange Connections of Wellhead Equipment - Gasket - БX

GOST 28919 - 1991

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俄标GOST 28919 - 1991 GOST28919 28919GOST Flange Connections of Wellhead Equipment - Gasket - БX
Calculate weight and price. Weight 1000 pcs : kg x $ per kg = $ 1000 pcs
Default density g/cm3
Size
152 153 154 155 156 157 158 159
d
h
n ± 0.2
d1
per unit ≈ kg
84.7 100.9 116.8 148 237.9 294.5 352 426.7
10.2 11.4 12.4 14.2 18.6 21 23.1 25.7
10.2 11.4 12.4 14.2 18.6 21 23.1 25.7
1.6 1.6 1.6 1.6 3.2 3.2 3.2 3.2
0.19 0.28 0.38 0.65 1.9 2.9 4.3 6.7
Size
160 162 163 164 165 166 167 168
d
h
n ± 0.2
d1
per unit ≈ kg
402.6 475.5 556.1 570.5 624.7 640 759.4 765.2
23.8 14.2 30.1 30.1 32 32 35.9 35.9
13.7 14.2 17.37 24.58 18.5 26.1 13.1 16
3.2 1.6 3 3 3.2 3.2 1.6 1.6
3.2 4 6.86 9.8 9.5 14.4 10 14
①,1. Technical requirements for gaskets
1.1. Gaskets shall be produced only from one-piece blanks.
1.2. Hardness of material for manufacturing ring gaskets shall be of no more than:
- 107 HB for carbon steel;
- 131 HB for quality steel:
- 160 HB for carbon steel.
Hardness of recommended gasket materials shall comply with those specified in table 8.
Table 8:
Designation of gasiket material | Steel grade, number of standard | Brinell hardness,no more than
Y1 | Steel 0 GOST 380 107
| CT08Kп GOST 1050 98
Y2 | CT 20 GOST 1050 127
| CT 08 GOST 1050 109
K1 | 12X18H9T GOST 5632 160
K3 | 10X17H13M3T GOST 5632 160
Notes :
1. Gaskets Y1 and Y2 are designed for non-corrosion-resistant equipment.
2. Gaskets K1 are designed for the equipment operating in borehole environment with the volume content of C02 up to 6%; gasket K3 are designed for the equipment operating in borehole environment with the volume content of CO2 and H2S up to 25 %.
1.3. Hardness difference of materials of gaskets and flanges or flange groove surfaces contacting with gaskets shall be of no less than 50 Brinell units, unless other norm is indicated in specifications and technical documentation on the product.
1.4. Gaskets made of alloy-free steel shall be produced with a coating. Coating shall be cadmium or zinc in accordance with GOST 9.301. Thickness of coating shall be of 5 to13 microns.
1.5. Sealing surfaces of gaskets shall have no corrosion marks, contaminations,nicks, scratches, dents and other defects.

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