内衬不锈钢复合管是不锈钢复合管的升级产品，与不锈钢复合管有较大区别。内衬不锈钢复合管，顾名思义就是不锈钢内衬在管道内壁，满足介质使用要求。生产过程是在钢管内壁复合薄壁不锈钢管，这种双金属复合钢管大大提高钢管在输水、输热水、输煤气、输天然气、输油过程中的耐腐蚀性能，表面光滑，流体阻力小，又保留了钢管机械强度高，可采用焊接、沟槽、螺纹连接，密封性好，克服了镀锌钢管易腐蚀，采用热熔连接的塑料管易漏水和老化的缺陷，是输气、输水、输油钢管的升级换代的理想产品。
Lined stainless steel composite pipe is an upgraded product of stainless steel composite pipe, which is quite different from stainless steel composite pipe. Lined stainless steel composite pipe, as the name implies, is stainless steel lined on the inner wall of the pipe, to meet the requirements of medium use. The production process is to compound the thin-walled stainless steel pipe on the inner wall of the steel pipe. The bimetal composite steel pipe greatly improves the corrosion resistance of the steel pipe in the process of water delivery, hot water transportation, gas transportation, natural gas transportation and oil transportation. The surface is smooth, the fluid resistance is small, and the mechanical strength of the steel pipe is high. The steel pipe can be welded, grooved and threaded, with good sealing performance, which overcomes the corrosion of the galvanized steel pipe. The plastic pipe with hot-melt connection is easy to leak and age, which is an ideal product for upgrading of gas transmission, water transmission and oil transmission steel pipes.