Tubing Upper Flange Fittings

In the production of flange products, our Baohua company has to go through a series of processes such as casting blank, rough cutting, fine turning, boring, drilling, heat treatment, quality inspection and powder spraying. And has the ISO9001 quality certificate, the quality can be guaranteed. And have API 20B,API Q1 certificates, and have the qualification to meet the production.

The flanges we process and produce are mainly used in petroleum and construction machinery and equipment industries. The materials used in processing and production are flexible and can be forged according to the shape and size provided by customers.

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Product Details

Flanges used in oil fields require strong sealing and high quality, and our Baohua company has been processing flanges in oil fields for many years and indirectly exported them to foreign countries-Germany and Russia. Because the domestic industry is not ideal, we want to import and export directly with foreign customers, avoiding third-party fees, so as to ensure high quality products and low prices. The following table is the information of this product. Attached is a brief introduction of our company.


Our Baohua Company was founded in 1969. After three generations' hard work, it now covers an area of 50,000 ㎡ and has a building area of 25,000 ㎡. There are 260 employees and 46 engineering technicians. The annual output of forgings is 30,000 tons. Mainly in the automobile, hydraulic machinery, wind power generation, petroleum machinery parts, construction machinery, mining, metallurgy, shipbuilding machinery and other industries to produce related accessories. The products sold are oriented at home and abroad. The company has its own technology research and development organization "Zhangqiu Baohua Forging Technology Development Center". Now it has grown to three factories.

Company Appearance

The company's main management, technical personnel and key equipment operators have more than 15 years of working experience in the same industry.

And since 2001, the company has successively passed ISO9001, ISO14001 and APIQ1, and obtained the "Special Equipment Manufacturing License".

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At present, our forging equipment in Baohua Company mainly includes: five tons and three tons of free forging hammers, 2500 tons, 1000 tons and 600 tons of friction presses, six large plywood hammers and various types of air hammers; There are more than 60 sets of machining equipment, including CA5116E*1015 vertical lathe, CW61100B and CW50 lathe. There are 2 sets of well-type and trolley-type electric furnaces for heat treatment. There are two tempering furnaces, which can complete product normalizing, annealing, tempering and other technological treatments. Equipped with a nationally recognized physical and chemical laboratory, the main testing equipment is a spectrometer imported from Germany with a value of nearly 500,000 yuan; Brinell hardness tester imported from the United States with a value of 120 thousand yuan can carry out ultrasonic nondestructive testing and mechanical performance test.

Lathe machining 

Lathe machining 

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For details, please contact us by email. zhangqiubaohua@126.com

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