The market is flooded with spiral welded steel pipes, and advertisements from merchants are endless. Customers often find it difficult to distinguish between good and bad products, and purchasing substandard products can lead to endless troubles.

When it comes to steel piping systems, GI (Galvanized Iron) and MS (Mild Steel) pipes are two of the most commonly used types. Both serve essential roles in construction, plumbing, and industrial applications, yet they differ significantly in composition, properties, and performance.

Seamless steel pipes with small outer diameters are called small-diameter seamless steel pipes. Small-diameter seamless steel pipes can be further divided into: seamless small-diameter steel pipes and straight-seam (also known as welded) small-diameter seamless steel pipes.

Boiler tubes are mainly used to manufacture superheaters, reheaters, water walls, economizers, etc., for supercritical or ultra-supercritical boilers.

H-beams are made from a variety of materials, commonly including carbon structural steel such as Q235 and Q345, as well as alloy steel with higher strength and performance. Their specifications are mainly represented by a set of numbers, such as H200x200x8x12, representing different sizes of H-beams, specifically indicating the model (e.g., H-beam), height (H), and other parameters.

Black steel pipe Sch 40 is one of the most widely used types of carbon steel pipe in construction, plumbing, and industrial systems. Its Schedule 40 designation represents a balanced wall thickness that supports moderate pressure while maintaining an affordable cost.