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Help CenterTorx A-325 Structural Bolt for Crane Rail Fastener ISO Grade 8.8
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| Identification Grade Mark |
Specification | Fastener Description | Material | Nominal Size Range (in.) |
Mechanical Properties | ||
| Proof Load (psi) | Yield Strength Min (psi) | Tensile Strength Min (psi) | |||||
| A325 | ASTM A325 Type 1 | High Strength Structural Bolts | Medium Carbon Steel, Quenched and Tempered | 1/2 thru 11-1/8 thru 1-1/2 | 85,000 74,000 |
92,000 81,000 |
120,000 105,000 |
| A325 | ASTM A325 Type 2 | Low Carbon Martensitic Steel, Quenched and Tempered | 1/2 thru 1 | 85,000 | 92,000 | 120,000 | |
| A325 | ASTM A325 Type 3 | Atmospheric Corrosion Resisting Steel, Quenched and Tempered | 1/2 thru 11-1/8 thru 1-1/2 | 85,000 74,000 |
92,000 81,000 |
120,000 105,000 |
|
The use of high strength bolt to connect large steel structure parts has become an important trend in fastening field. The main high strength bolts are ASTM A325 bolts, ASTM A193, A307 bolt, A490 bolts, etc. High strength bolts are made of high-strength steel and require a large pretension. High strength bolt has good mechanical and seismic properties, and resistance to fatigue. Its connection stiffness is high, construction is simple, more used for bridge, railroad, high pressure and ultra high pressure equipment connection. Due to the A325 bolt strength is high, it is especially suitable for heavy machinery structures with variable and dynamic loads. Therefore, it is widely used in the metal structure of the crane.
Bolts Size |
Fits Rail |
7/8" x 5" |
105 Cr. |
1" x 5" |
104 Cr. |
1 1/8" x 5 1/2" |
135 Cr. |
1 1/8" x 6" |
171 Cr. |
1 1/8" x 6" |
175 Cr. |
Application of Hex Head A-325 Structural Bolt for Crane rail fastener ISO grade 8.8
High strength bolts are sometimes used to fasten railroad rails. In the ordinary straight railroad line, the ordinary section of the rail is generally connected with ordinary bolts. But if in the mountain area with higher altitude or in the bend where the force is larger, then the use of high strength bolts for tightening. High strength bolts are also common on multiple sets of railway turnout frogs (use together with frog bolts) and heavy rail lines with heavy locomotive driving on.
Together with crane rail fasteners, high strength bolts can also be used on cranes. Due to structural reasons, the tower crane is in an unbalanced state regardless of whether it is empty or hoisted. In addition, the heavy weight of the goods that will be hoisted in operation has caused great pressure on the steel structure. The fastening performance of high strength bolt is very important at this time. The rigid connection of high strength bolts is adopted for the bridge of crane and the connection between main beams.
Large bridges are fixed with many steel structures. High strength bolt can play a good role in fastening the bridge structure.
Why choose us
01 We are a professional ,manufacturer of track bolts, we are dedicated in kinds of railway fasteners, we can meet your customized requirements in details.
02 We have workshop, do every step from purchasing material to shipment all by our team, so our prices are the most competitive under same quality.
03 Our lead time can be adjust to match your different schedule of different products. Normally 20-30 days is available in producing, inspection, and packing.
04 We care about the safety of using our products, with all our workers and technicians working together, it is guaranteed that our railway products reach the international standards, such as AREMA,GB, BS, UIC, DIN, etc.
Quality Control
Kunshan Alex Railway Fastening Co., Ltd. is an ISO 9001/2008 certified company. All processes are in accordance with the requirements of the ISO quality management system. From raw material to the finished products, we operate in accordance with standard procedures. We have strict quality control systems for suppliers:
1. Strictly inspection and testing of raw materials
2. Regularly organize quality control coordination meetings with semi-product suppliers to provide technical support.
3.Both sampling and batch testing will be taken while producing to make sure products 100% qualified before shipment.
Certificate:
Other Certificates available on request.
Workshop shown:
Packing for Hex Head A-325 Structural Bolt for Crane rail fastener
1. 50lbs keg +wooden crate ; 100lbs keg +pallet; 200lbs keg +pallet
2. Woven bags in wooden crate
3. Woven bags +plywood pallet
4. Other ways as per client's requirement
FAQ
Q: Are you manufacturer or trader?
A:We are manufacturer and trader, company located in Kunshan ,Jiangsu Province, China, about 2 hours take taxi from Shanghai airport.
Q: Do you provide samples?
A:Yes, we offer sample for approval before each order.
Q: What's your payment term?
A: 30% deposit by T/T , balance against B/L copy, Payment term is negotiable based on different order products and quantity.
Q: How long is your delivery time?
A: Generally 20-30 working days after receiving deposit or the original L/C. Could be re-schedule under really urgent case.
Q:Can we visit your factory?
A:Of course, you're warmly welcomed. Once we have your schedule, we can arrange everything in advance.
Contact details:
If you have any other questions, pls feel free to contact us as below:
Company name: Kunshan Alex Railway Fastening Co., Ltd.
Address: No.1255 Chengbei Road, Yushan town, Kunshan City, Jiangsu Province, China.
Tel: 0086 512-83639017
Fax: 0086 512- 83639019
Skype/whatsapp/wechat: 86 18914971437
Send Inquiry to This Supplier
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