Hot Selling Railway Segment Bolts
Gnee provides the following tunnel bolt products. If you don't find the product you need, please contact us.
Double-Ended Straight Segment Bolts
|
Size |
Grade |
Material |
Surface treatment |
|
φ22×410 |
ISO898 - 1:2009 standard, grade 8.8 |
45# |
Hot dip galvanized, thickness of zinc layer ≥43μm |
|
φ25×395 |
|||
|
φ28×556 |
Natural color |
||
|
φ20×350 |
35# |
Dacromet coating, thickness of coating ≥8μm |
|
|
φ30×480 |
ISO898 - 1:2009 standard, grade 10.9 |
40Cr |
Powder zinc - infiltrated, thickness of zinc layer ≥60μm |
Double-Ended Arc-Shaped Segment Bolts
|
Size |
Grade |
Material |
Surface treatment |
|
φ22×410 |
ISO898 - 1:2009 standard, grade 8.8 |
45# |
Hot dip galvanized, thickness of zinc layer ≥43μm |
|
φ25×395 |
|||
|
φ28×556 |
Natural color |
||
|
φ24×430 |
Hot dip galvanized, thickness of zinc layer ≥43μm |
||
|
φ26×460 |
Multi - component composite powder zinc - infiltrated, thickness of zinc layer ≥50μm |
Hexagon Head Arc-Shaped Segment Bolts
|
Size |
Grade |
Material |
Surface treatment |
|
φ22×410 |
ISO898 - 1:2009 standard, grade 8.8 |
45# |
Hot dip galvanized, thickness of zinc layer ≥43μm |
|
φ25×395 |
|||
|
φ28×556 |
Natural color |
||
|
φ20×320 |
ISO898 - 1:2009 standard, grade 6.8 |
35# |
Blackening treatment |
|
φ27×440 |
ISO898 - 1:2009 standard, grade 8.8 |
45# |
Mechanical zinc - plating, thickness of zinc layer ≥30μm |
