Leakage is the main form of pipe flange failure, which is related to many factors such as the type of sealing structure, the stiffness of the connected parts, the performance of the seal, operation and installation. The gasket is the main seal of the flange connection, so the correct selection o ...

Not long ago, Haihao received an inquiry from the customer about the wind power flange. After many times of communication, the customer finally decided to order the flange product from the customer. After confirming the cooperation, the customer recognized Haihao’s professionalism and aske ...

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 devel ...

As a professional manufacturer and operator of pipeline engineering supporting products, Haihao sometimes encounters the situation of expediting delivery for customers. On January 10, a batch of flanges ordered by Russian customers completed production and were packed for shipment. The customer& ...

The natural environment is a major problem affecting the operation and maintenance work, which will directly affect the time to sea, such as typhoon days, fog days and other special weather, and the time to sea will be reduced. In addition, the transportation equipment of offshore wind power is ...

The new energy base project in the middle and north of Ordos in Kubuqi Desert (hereinafter referred to as “Kubuqi Base Project”), led by Three Gorges Group and jointly constructed by Inner Mongolia Energy Group, started construction in Dalate Banner, Ordos, Inner Mongolia on August 2 ...

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

On December 23, the production of large diameter flange ordered by Singapore customers was completed. The diameter of the flange is 3m. The customer placed an order in the middle of this year. In addition to the flange, the order also includes a large elbow. After the packaging of this completed ...

Recently the Pakistan client send us a tender inquiry for SSGC(Sui Southern Gas Company Limited). The tender including many products, like: ANSI B16.5 Flanges, ASME B16.5 butt weld fittings and fasteners. Weld neck flange WN flange A182 Gr F321 RTJ ASME B16.5 Before we submit the offer, we provi ...

Tube sheet is widely used in tubular heat exchanger, boiler, pressure vessel, steam turbine, large central air-conditioning and other industries. drawing of the tube sheet flange It is mainly used in chemical vessels, such as tubular heat exchangers, pressure vessels, boilers, condensers, centra ...

Today, the 2022 China Marine Economy Expo, the 2022 Shenzhen International Ocean Week and the 2022 Shenzhen Ocean Industry Investment Promotion Conference opened in Shenzhen. Haihao Group 9CT005 booth The Expo covers an exhibition area of 60000 square meters, attracting more than 800 exhibitors ...

Haihao Group will take many important products to participate in the 2022 China Marine Economy Expo held in Shenzhen Convention and Exhibition Center (Futian District) on November 24-26, 2022, to help China achieve the upgrading and development of pipeline equipment! The exhibition covers an are ...