2022 SSNAME Academic Conference The 2022 SSNAME academic conference was successfully held on November 12. The theme of the conference was “Innovation drives high-quality development of offshore engineering”, Haihao Group was honored to be invited to participate. Special rotating flan ...

Flat welding flange is a flange with simple structure, which is connected with the vessel or pipeline through fillet weld. Butt welding flange is neck type, with better relative stiffness and sealing. In practical application, the two can be selected according to different situations, such as pr ...

At the beginning of October, an American customer inquired from Haihao and wanted to order a batch of flange products for a local water conservancy project. After receiving the inquiry, Haihao’s business personnel carefully responded and recommended appropriate products according to the cu ...

China Marine Economy Expo, the only national marine economy exhibition in China, is an important window to show the achievements of China’s marine economy development. With the theme of “enabling scientific innovation and sharing deep blue”, the 2022 China Ocean Economic Expo ( ...

With the expansion of Haihao Group’s business, more and more domestic and foreign customers cooperate with us. In order to better serve customers, Haihao began to upgrade the factory and warehouse in October. At present, the reconstruction project has begun, and the painting of the warehou ...

Heat treatment can generally be divided into two types according to process: preliminary heat treatment and final heat treatment. Generally, heat treatment will not change the shape and overall chemical composition of the workpiece, but will endow or improve the performance of the workpiece by c ...

The function of welded steel stainless steel flange is to butt weld the flange and pipe. The structure is reasonable, the compressive strength is high, the bending stiffness is large, and it can withstand ultra-high pressure, continuous bending and temperature fluctuations, and the sealing perfo ...

The gasket is a ring made of a material that can produce plastic deformation and has a certain strength. Most gaskets are cut from non-metallic plates, or made by professional factories according to the specified standards. Their materials are asbestos rubber sheets, asbestos sheets, PTFE sheets ...

With the increasing demand for prefabrication in the market, each factory is facing more challenges. In addition to the production of products, the factory still needs to master more technology to complete the assembly of products before leaving the factory. The assembly of pipe fittings cannot ...

Large diameter flange is one of the flanges. It refers to the flange that exceeds the size specified by the relevant national departments, and generally refers to the flange above DN2000. It is widely used and promoted in the machinery industry, chemical industry, wind power industry, and sewage ...

According to petrochemical standards, flanges can generally be divided into the following five types: flat welding flange, butt welding flange, socket welding flange, loose sleeve flange and threaded flange. The flat welding flange is simple in structure and uses less materials when making, but ...

Flange is a connecting part. According to different standards, there are different classifications. Let’s learn about them together. According to the chemical industry standards, it is divided into integral flange, threaded flange, plate type flat welding flange, neck butt welding flange, ...