Ningbo Zhongjiang High Strength Bolts Co. , Ltd, That is, Ningbo Zhongjiang Petroleum Pipes & Machinery Co. , Ltd, Was established in the year 1998 and stands in a beautiful and rich coastal city: Ningbo. Ningbo is located on the south of the Yangtze River Delta, With the great Beilun Harbor in the east and Hangzhou Bay in the north; While it is near to Lishe Airport and Xiaoshan International Airport, Hangzhou- Ningbo Expressway passes by it: It enjoys convenient transportation.

Ningbo Zhongjiang is a professional fastener manufacturer and exporter of China fastener, Also is one member of China Fastener Association. We are proficiently engaged in manufacturing various kinds of high strength bolts, Nuts and thread rods with a yearly capacity of 30, 000 tons and an annual turnover of 300 million Yuan. Our products include standards of ANSI/ ASTM, DIN, BS, ISO, GB, JS, Etc, Which are mainly applied to the fields of high strength tight firmware and petroleum pipes' valve. Our ...[More]are mostly exported to Europe, North America, The Middle East and Southeast Asian countries and regions. We receive great acclaim from our clients both at home and abroad because of the fine quality of our products and our good credit.

Ningbo Zhongjiang High Strength Bolts Co. , Ltd covers an area of 40, 000 sq. M, With building area of 30, 000 sq. M. We boast more than 200 staff and workers, Including 35 manageri staff and 2 senior engineers with the National Grade III Certificate of Physical Test and Chemical Analysis, Who are responsible for monitoring the quality of the products we produced and improving the process of heat treatment. The company is fully equipped with over 260 equipments, And about 30 of them are examination devices. To perfect the quality of our products, We imported a vortex durometer from Germany to carry out 100% hardness test of our products. While we apply a large scale vortex flaw detector to detect the crack flaw in the stud bolts, We use an imported direct- Read spectrograph to verify the chemical composition of raw materials.

We have received ISO9001: 2008 and been granted CE Certificate by the Lloyd's Register. Our company’s quality management system is approved by Aramco Overseas Company B. V. (Shanghai) on June 08, 2009.
With standard management, Advanced and mature process techniques and reliable quality control system, We believe that we will create a bright future together.