|Place of Origin:||China|
|Minimum Order Quantity:||10000sets|
|Packaging Details:||Plastic bags and wooden pallets or according to clients' requirement|
|Delivery Time:||30 days after received your payment|
|Payment Terms:||T/T, 30% in advance|
|Product Name::||High-Strength Bolts For Rail Track | Fish Bolt, Clip Bolt, Special Bolt Material 50#||Material::||45#|
|Main Surface Treatment::||Plain (oiled), Oxide Black, Zinc, HDG, Wax, Bitumen, Dacromet||Package::||Woven Bag, Wood Pallet|
hexagon head bolt,
steel bolts and nuts
|Russian clamp bolt & inserted bolt|
|Or the type by customers’ drawings|
|Mechanical properties||Tensile strength: ≥400Mpa||Tensile strength:≥500Mpa||Tensile strength:≥800Mpa||Tensile strength:≥1000Mpa|
|Yield strength:≥240Mpa||Yield strength:≥300Mpa||Yield strength:≥640Mpa||Yield strength:≥900Mpa|
|Cold bending: 90 degree without crack||Cold bending: 90 degree without crack||Cold bending: 90 degree without crack||Cold bending: 90 degree without crack|
|Surface||plain (oiled), Oxide black, Zinc, HDG, wax, bitumen, Dacromet, Sherardizing|
From the strength grade of steel, high strength bolt with 8.8s and 10.9s strength grade, most are 10.9s. By contrast, common rail bolt with lower strength grade like 4.4s, 4.8s, 5.6s and 8.8s.
High strength bolt exert pretension force to screw and produce extrusion force between connecting components. So that creating great friction perpendicular to the direction of screw. Besides, pretension force, anti-sliding coefficient and steel types have great influence on bearing capacity of high strength bolt. Common railroad bolt transmit shear by shear resisting of screw and bearing stresses along bolt hole.
High strength bolt can be applied in the main member. Generally, high strength bolt is permanent connection, in other words, single use only. High strength bolt is the pre-stressed bolt. Frictional type was added pre-stress by torque wrench. Bearing type shakes off the plum flower head. Common railway bolt is reusable and it has poor shear resisting, so it is mostly applied in the secondary member.
Railway, Mining, Bridge, Construction and so on
Inspection machine for finished rail clips
Our main products:
We can provide products according to customers drawings and samples.Our main products are as following:
1. Screw spike/Coach screw/Drive screw/Sleeper Screw, Dog spike/Railroad spike/Lock spike/Cut spike,etc.
2. Rail clip/ Tension clamp/ E, R, SKL clip/ DP clip/ Deenik clip
3. Swivel Bolts/ Track Bolt/ Special bolts/ U bolts/ J bolts/ Anchor bolts/ Foundation bolts/ Stud bolts/ Rod bolts/ Curved bolts/ Tunnel bolts
4. Tie plate/ Base plate / Rail plate/ Rail fixing base/ Rail Pads/ Sole plate/ Sole pad
5. Fish plate / Joint bar / Rail joint/ Splice Bar
6. Track bolt/ T bolt / Rail bolt/ Clamp bolt/ Inserted bolt/ Clip bolt/ Fish bolt/ Square bolt/ Rod bolt /Rail joint bolt
7. Clamp plate/ Rail spring clamp/ Anchor plate/ Steel clip
8. Rail Shoulder/ Rail sleeper Inserts/ Rail Anchors for rail sleepers
9. Plastic dowel / Guide plate/ Nylon insert
We are trying to supply the best products at the best price!
1. Q: what information should we show if we need price?
A: 1. tree species;
2. size: length*width*thicknessl;
4. we adopt oiled anti corrosion, if yours special, please mark it.
2.Q: what is anti-corrosion?
A: Using high temperature and pressure oiling corrosion technology.
Technology standards : GB9221-88
3. Q: payment terms?
A: 30% by T/T as deposit, the balance 70% before delivery.
4. Q: Validity Date?
A: 10~15 days in general. it will be showed in quotation.
5. Q: Mold fee?
A: if we have same mold, no mold fee;
if we make new mold with small quantity, client pay for it;
if we make new mold with large quantity, SuYu pay for it.
If you have any other models of rail/ rail fastener, welcome to contact me.