Square Flange Bolts with Round Thread for Tunnel Construction Square Flange Bolts with Round Thread

• Model NO.: Square Flange Bolts
• Type: Hexagon Head
• Head Style: Square
• Grade: 10.9
• Diameter: 25mm
• Tension Strength: More Than 700MPa
• Package: Wooden Case
• Origin: China

• Material: High Strength Steel
• Connection: Common Bolt
• Standard: GB
• Application: Building
• Length: 400mm-500mm
• Surface: Yellow Zinc
• Trademark: Tedrail

Tedrail can supply most of railway products, such as Railway wagon and locomotive parts(Bogie,Axle,Wheel,Wheelset,Brake shoe,Axle box,Side frame,Bolster,Center Plate,Adapter, Brake Disc, Coupler,Yoke,Piston,Piston Ring etc);Rail Track fastening parts(Rail spike,Clips,Fish plate,Base Plate,Bolt,Nut,etc);Automotive Parts;Other casting,forging and machining product design,production and service based on customers' requirements. We have a professional technical and quality assurance team, well understanding of international railway products standard or specification, expert in design, manufacture, and inspection for railway products. With our experienced and educated business team, Cooperated with Chinese railway industrial university, Tedrail has got most valuable technical support and knowledge base. 
Tedrail is focused on the complete solution of railway industry, and interested in sharing experience and cooperation with all parties in the world.
We have a strong technical team, lots of them have been engaged in the production line for many years, with a more profound experience about production and processing of products.  
Our team comprises: 
Management Team;Marketing Team;Senior Engineer;Engineer;QA Team;Workshop staff
We have a professional technical and quality assurance team, well understanding of international railway products standard or specification, expert in design, manufacture, and inspection for railway products. We will make sure give customers best design and most reliable and safe products. With our experienced and educated business team, Tedrail give customers easiest and convenient business service.
Our railway industrial products are tested:
1. Chemical Analysis
2. Metallographic
3. Mechanical Analysis
4. Ultrasonic Testing
5. Magnetic Testing
6. Impact Testing
7. Hardness Testing
8. Surface Quality

We are one of the most promising organizations who have achieved a leading position in this domain due to the following factors:
Rigorous quality control measures ;State-of-the-art infrastructure ;Ethical business policies ;Experienced professionals ;Wide distribution network 
Team of skilled personnel ;On time delivery

Diameter: 25mm
Length from 400mm to 500mm
Tension strength is more than 700MPA
Surface: Yellow Zinc or according to clients' requirement
Packing: 600pcs in wooden case 

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