TPEP防腐鋼管在國內經曆了四次升級換代，zui早是20世紀80niandaiyouribenyinjindeliuhuachuangjinziyicixingchengmogongyi，caiyonggaixingjuyixifangfu
，youyujuyixiyugangguandefuzheliwenti
，manmandefazhandaoneiwaituhuanyangshuzhifenmo，danshiwaibihuanyangshuzhitucengjiaocuibunaikepeng

，houlaifazhandaodisandaineibihuanyangwaibijuyixifangfu
，danshidancengjuyixizhijieyugangguanjiehehaishicunzaifuzheliwenti，qieshigongguochengzhongnanmianchuxiankepeng
，zui後升級到現在的第四代防腐外3PE防腐內熔結環氧粉末防腐。3PE防腐層是以熔結環氧粉末（FBE）為底層、膠jiao粘zhan劑ji為wei中zhong間jian層ceng和he擠ji出chu聚ju乙yi烯xi為wei外wai護hu層ceng同tong步bu纏chan繞rao或huo擠ji出chu而er成cheng為wei一yi個ge整zheng體ti
，具ju有you優you良liang的de絕jue緣yuan性xing能neng和he抗kang機ji械xie損sun傷shang性xing能neng

，較jiao單dan層ceng聚ju乙yi烯xi防fang腐fu具ju有you優you勢shi。

TPEP螺旋鋼管在外單層聚乙烯內環氧複合鋼管的基礎上升級換代產品，是目前埋地長輸管線zui先進的鋼管防腐形式。TPEP鋼管填補了國內鋼管.防腐的空白
，耐腐蝕能力提高了3-5倍。