​We offer black-painted seamless steel pipes in a variety of size ranges to meet different diameter requirements. The product materials include multiple high-quality carbon steel grades, such as ASTM A53 Gr.B, ASTM A106 Gr.B, and API 5L Gr.B. Additionally, we provide high-strength API 5L series pipes to meet more demanding operational conditions.

Black hollow steel refers to hollow steel that has not undergone galvanization or surface coating treatment. Its surface presents a natural black oxide film, which provides a good foundation for corrosion resistance. According to the different cross - sectional shapes, black hollow steel can be mainly divided into three types: circular, square, and rectangular. They are widely used in load - bearing structures and space frames to meet the requirements of different architectural forms and engineering projects.

Galvanized hollow steel pipe is a square or rectangular-section steel pipe that has undergone hot-dip galvanizing treatment. It has a hollow structure inside. While maintaining sufficient strength, it improves the efficiency of transportation and installation. The hot-dip galvanizing process involves immersing the steel pipe into molten zinc liquid, forming a uniform and dense zinc layer on its surface, thus enhancing the corrosion resistance of the steel pipe.

Hot-dip galvanized seamless steel pipes have become the preferred piping material across various industries due to their exceptional corrosion resistance, high strength, long service life, and eco-friendly properties. As a professional steel pipe manufacturer, Mate Company is committed to providing high-quality hot-dip galvanized seamless steel pipes that meet international standards, catering to the diverse needs of our customers. For more product information, please visit our official website or contact our sales team.

In multiple industries such as water supply, oil transportation, and structural manufacturing, welded steel pipes are gradually becoming the mainstream choice in the market due to their high structural strength, high production efficiency, and cost-effectiveness.As a professional supplier of steel pipe products, Metal Company has long been focusing on the manufacturing and export of high-quality welded steel pipes. It offers a variety of specifications and types of welded pipe solutions to meet the diverse needs of global customers.

​Among numerous industrial materials, hot-dip galvanized seamless steel pipes are widely used in industries such as petroleum, chemical engineering, construction, and water conservancy due to their excellent corrosion resistance and good mechanical strength. Their strong corrosion resistance stems not only from the high-quality steel itself but more critically, from their unique manufacturing process. This article will focus on the manufacturing workflow of hot-dip galvanized seamless steel pipes to help users understand the technical value of this product.