GB 9948 seamless steel pipes are vital for China's petroleum cracking, offering a range of grades from carbon (10#, 20#) to alloy (12CrMo, 15CrMo) and stainless (07Cr19Ni10, 022Cr17Ni12Mo2), ensuring high-temperature, high-pressure, and corrosion resistance. Their features, like efficient fluid delivery and material utilization, enhance refinery efficiency, with applications in furnaces and weapons. Compared to ASTM A53/A106 and API 5L, GB 9948 pipes are more specialized, driving China's leadership in oil refining, with future advancements in coatings and monitoring promising extended service life.