Cold-rolled seamless steel tube, also known as precision seamless steel tube, is a high-precision steel tube produced using a cold-rolling process. Its outer diameter ranges from 4.0 to 450 mm, and its wall thickness from 0.04 to 60 mm, conforming to standard GB/T3639-2008.

API 5L pipelines are widely used for transporting oil, natural gas, water, and for the natural gas industry. API 5L refers to the American Petroleum Institute's standard, which is prepared and issued worldwide.

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.