配套金属软管螺牙厚钢管（水、煤、气管）薄钢管（电线管）公制英制公称英称外径×壁后(mm)公称英称外径×壁后(mm)φ101/4″#101/4″#121/2″12.76×1.60φ12(13)3/8″#123/8″17.00×2.25#155/8″15.87×1.60φ15(16)1/2″#151/2″21.25×2.75#203/4″19.05×1.80φ20(19)3/4″#203/4″26.75×2.75#251″25.40×1.80φ251″#251″33.50×3.25#321-1/4″31.75×1.80φ321-1/4″#321-1/4″42.25×3.25#401-1/2″38.10×1.80φ38(40)1-1/2″#401-1/2″48.00×3.50#502″50.80×2.00φ51(50)2″#502″60.00×3.50#702-1/2″63.50×2.50φ64(70)2-1/2″#702-1/2″75.50×3.75#803″76.20×3.20φ75(80)3″#803″88.50×4.00///φ1004″#1004″114×4.00///φ1255″#1255″140×4.50///φ1506″#1506″165.00×4.50///)