Walk past any major construction site or industrial zone these days, and you’ll see a familiar skeleton of steel rising against the sky. But look a little closer. The framework isn’t just about traditional I-beams anymore. There’s a growing presence of clean, linear profiles—rectangular steel pipe and its square cousins, forming the essential bo...

This is a very common and important question in the field of metal materials. Simply put, a welded pipe is made by coiling and welding steel strip or steel plate, so it has a seam; while a seamless pipe is made by piercing and rolling a solid steel billet, so it has no seam. In the broad category of carbon steel pipe, both welded and seamless ty...

This is a very practical and important question. Hot-dip galvanized pipes and Zinc-aluminum-magnesium pipes are two mainstream anti-corrosion steels on the market today, and there are significant differences between them. Simply put, Zinc-Aluminum-Magnesium pipe can be seen as an “upgraded version” of the hot-dip galvanized pipe, rep...

This is a highly technical question. While both pre-galvanizing and hot-dipping involve coating steel with molten zinc, the fundamental difference in the order of operations leads to significant variations in product form, performance, and, consequently, their applications. In simple terms, the core difference is: Pre-Galvanizing:Zinc coating fi...

Okay, this is a very practical question. Transforming black steel pipes (i.e., ordinary steel pipe without any coating) into galvanized pipes primarily involves the following two mainstream galvanizing methods, along with some supplementary explanations. Two Mainstream Galvanizing Methods 1. Hot-Dip Galvanizing (HDG) This is the most common and ...