PVC / PREINSULATED TUBING 绝缘管/保温管 Brand: JWGMaterial: Stainless steel, seamless or weldedSurface: PE, PVC coatStandard: ASTM A269, A213 etc.Type: coiled tubing, straight tubing.内部基管: 不锈钢管,无缝管或焊管外表覆盖管: PVC, PE 等标准: ASTM A269, A213 etc.钢管类型: 盘管,直管