carbon steel 4.8 8.8 12.9 full partial thread hex bolt DIN933 DIN931

1. 4.8 hex bolt specification

   ASTM F568 Specification covers Grade 4.8 Bolts/Screws/Studs manufactured from Low or

2. medium carbon Alloy Steel with fully or partiall annealed condition in size range of M5 upto M100 & minimum

3. Tensile Strength of 400Mpa.

   
   

   Grades Material Description

   Grade 4.8	Low or medium carbon steel; fully or partially annealed

   
   

   Markings&Mechanical Properties

   Markings & Mechanical Prperties
   Grades	Markings	Size Range	PS [MPa]	YS (min) [MPa]	TS (min) [MPa]	Hardness [Rockwell]
   Class 4.8		1.6–16	310	340	420	B71–95

   
   

2. Grade 4.8 hex bolt we have exported before

Huitong Group was established in 1978. After 38 years'development and innovation,by now,Huitong Group has set up multiple subsidiary companies.Among them,Zhengzhou Huitong Pipe Fitting Co.,Ltd.,with the indepent right of import and export, is mainly engaged in exporting steel pipe and pipe fittings for Huitong Group and assisting another subsidiary company of Huitong Group:Zhengzhou Huitong Machanical Equipment Co.,Ltd., in exporting machanical equipment.

Zhengzhou Huitong Pipeline Equipment Co.,Ltd.,with the strong support of Huitong Group,and years'development and innovation, are more and more professional in technical service and can manufacure products with all kinds of material,shape and size. Especially in elbows, tee, reducer, flange and pipe cap etc., we have gained more than 20 product patent, and hundreds of technology patent. Also,we have gradually taken an ireplacable role in High-pressure,high-temperature and anti-corrosion area. With the continuous construction of engery in China,such as petrol gas,electric power,etc.,our company has become the purchasing center of whole set fittings for such projects.In 2009,a foreign trade team established,is manily engaged in oil gas and electric power projects abroad.By now, our products have been exported to

Canada,Malaysia,Parkistan,UAE, Eygpt,the Middle East countries, etc.. We have passed the qualification of ISO9001:2000 and API quality certification system. High-quality products and high-class service are well received by abroad customers in this industry. The unique diversified production line can offer you one-package serive, you can pruchase all complex products from us at one time. What's more, our sufficient material stock and conventional product stock can ensure you receive satisfied product in the shortest time.

With powerful financial strength,advanced managerial concept, excellent marketing service,strict quality control system and integrated marketing team,we would like to develop together with you hand in hand. Adhering to the operation principle of "faith first and clients foremost", we always supply high quality products, complete after-sales service and favorable prices. We sincerely hope to establish long-term cooperation with you on the basis of mutual benefits, reciprocity and common development.

People who interested in our products or want to get more information about us,contact us,please!Looking forward for your inquiry.