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About Us

Longkou Hongchang Metallic Products Co., Ltd. is located in the east of Longkou, Yantai, Qingdao in the south, across the sea from Dalian in the north, with developed transportation and geographical location.

Hongchang specializes in the production of various steel grating, trench covers, pedals, hot-dip galvanized steel grating, special-shaped steel grating, etc.Our products are sold all over the country and exported to Europe, America, Africa, Southeast Asia and other countries and regions.With stable quality and high quality service, our products are well received by the customers at home and abroad.Our steel grating are widely used in petroleum, chemical industry, thermal power plants, sewage treatment, municipal bridges, food, aquaculture and other industries.

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  • How do high-credit manufacturers ensure the quality of steel gratings?
    When the user chooses the steel grille, in addition to reviewing their production strength, they also need to criticize the manufacturer’s reputation, because only high-reputation manufacturers can better guarantee the quality of the product. So how do high-credit manufacturers guarantee p...
  • If the Grating Plate Is Used Improperly, It Will Reduce Its Service Life.
    After the hot-dip galvanized grating plate is produced, it is subjected to anti-rust treatment. There are 2 kinds of hot-dip galvanizing and electro-galvanizing. The hot-dip galvanized steel grating plant uses a surface treatment for the production of steel gratings. The galvanized steel grating...
  • Does The Steel Grating Need to Meet The User’s Requirements for Use?
    In the production process of steel grating, it is necessary to use a variety of technologies, only if it has a certain improvement in technology, will it really have the high quality of the product, then what kind of high technology does this product need? The first is that there is a need for h...
  • The Surface Treatment of the Steel Grating Also Satisfies Many Aspects of Functionality.
    When users use steel gratings, they often find that there is a layer of treatment on the surface, but the use of the field and different manufacturers will make this treatment very different, because of its sexual functionality. There is a certain difference in the performance, then what kind of...