Endeavour for 40 years, passion for the future. In 1982, Hebei Haihao Group officially established its factory in Mengcun County, the hometown of pipe fittings in China. From a few people to more than 700 people, Haihao has always put product quality and service first. Now Haihao Group has developed ...

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As a heat exchange element, the finned tube has been used in the environment of high-temperature flue gas for a long time, so it is required to have high performance indicators, mainly including: anti-corrosion, anti-wear, low contact resistance, high stability, and anti ash ability. There are many ...

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At the beginning of December, a customer in Pakistan asked for help from Haihao to customize a batch of finned tubes and gave relevant technical parameters to Haihao. After receiving the information, Haihao Group immediately arranged the technical department to communicate and drew the technical dra ...

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Not long ago, a customer in Pakistan who has cooperated with Hihao for many years contacted us and said he would order a batch of fin tubes. Finned tube is a kind of heat exchange element. In order to improve the heat exchange efficiency, the surface of the heat exchange tube is usually increased by ...

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The year 2023 is approaching us with vigor and vitality. In the New Year, Haihao Group will stay true to its original intention and forge ahead, working hand in hand with you to create a better world. Haihao Group ...

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In the ship pipeline system, pipes are indispensable. Today, Haihao takes you to see the production process of ship pipes. Blanking: prepare, draw lines and cut pipes according to the cutting schedule. According to the pipe manufacturing process, allowance can be added to the theoretical length, whi ...

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China Petroleum Pipeline Bureau (CPP), established in 1973 with the approval of the State Council and affiliated to China National Petroleum Corporation (CNPC), is a multinational pipeline engineering construction professional company with special qualification for general contracting of chemical an ...

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Recently, the first phase project of Enping 15-1 Oilfield Group in the Pearl River Mouth Basin was officially put into production. Enping 15-1 platform, the largest offshore oil production platform in Asia, with a total height of about 160 meters and a total weight of more than 30000 tons, has been ...

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A few days ago, the prefabricated products ordered by Chilean customers were packed and on the way to Chile. Today, let’s take a look at the packaging of this batch of products. This batch of prefabricated products has been coated both inside and outside. The inner coating is FBE coating, and ...

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During the use of pipeline products, to solve the corrosion problem of products, the coating itself needs to have a certain mechanical strength, chemical stability and compactness (the ability to resist the penetration of corrosive media), and have a good adhesion with the metal matrix. According to ...

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Not long ago, Haihao Group just completed the delivery of prefabricated parts to Chilean customers. To a certain extent, pipeline prefabrication is actually the welding of tube and tube, tube and flange, tube and elbow, tube and tee, etc. Therefore, the level of welding quality in the prefabrication ...

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Welding joints can be divided into two types, fixed joints and rotating joints. The fixed welding joint means that the equipment or pipe fittings do not move, and the welding is performed by people moving; the rotating welding joint means that the equipment or pipe fittings move, and people can choo ...

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