《无缝内螺纹铜管（英文版）》标准号是多少

“无缝内螺纹铜管（英文版）”的标准号是：GB/T 20928-2020E

GB/T 20928-2020E《无缝内螺纹铜管（英文版）》由国家市场监督管理总局 国家标准化管理委员会于2020-09-29发布，并于2021-08-01实施。

该标准的起草单位为金龙精密铜管集团股份有限公司、浙江海亮股份有限公司、浙江耐乐铜业有限公司、江苏萃隆精密铜管股份有限公司、中色奥博特铜铝业有限公司、山东兴鲁有色金属集团有限公司、青岛宏泰铜业有限公司、宁波金田铜业(集团)股份有限公司、佛山市华鸿铜管有限公司等；起草人是黄明、杭晶、孙新春、王向东、刘晋龙、王正堂、郎言平、陆明华、田原晨、孟文光、李福鹏、巢国辉、蒋文胜、罗欣、梁子浩、孙涛、赵钦海、李宝进、史琳、魏连运、武新宇、罗奇梁、张春明、冯成桂、隋长芬、杨书虎、项燕龙、陈进方、王希光、李辉。

“无缝内螺纹铜管（英文版）”介绍

Seamless inner-threaded copper tube, also recognized internationally by its technical term "smooth wall, inner grooved copper tube", is a specialized type of copper tubing designed for applications that require efficient heat transfer. This innovative piping solution boasts a unique structure with an outer smooth wall and internal helical grooves or threads, which are integral to the tube's wall without any seams.

The manufacturing process for these tubes involves extrusion through a series of dies, followed by rolling or threading on the inner surface, ensuring a seamless construction that reduces friction and enhances fluid dynamics. The lack of welded joints eliminates potential leak points and provides higher resistance to pressure, thereby increasing system reliability and durability.

Industrial sectors such as refrigeration, air-conditioning, and heat pump systems frequently opt for this kind of tubing due to its superior thermodynamic performance and ability to improve overall energy efficiency. The inner threads generate a swirling flow that mixes the fluid, minimizing thermal stratification and promoting better heat exchange. Additionally, the seamless inner-threaded copper tube is favored for its excellent corrosion resistance, longevity, and compatibility with various working fluids.