规格表注厚钢管B(水煤气管)薄钢管A(电线管)
公制英制公称英称外径×壁厚mm公称英称外径×壁厚mm
101/4″″101/4″ ″121/2″12.76×1.60
12(13)3/8″″123/8″17×2.25″153/8″15.87×1.60
15(16)1/2″″151/2″21.25×2.75″203/4″19.05×1.60
20(19)3/4″″203/4″26.75×2.75″251″25.40×1.80
251″″251″33.5×3.25″321/1/4″31.75×1.80
321/1/4″″321/1/4″42.25×3.25″401/1/2″38.10×1.80
38(40)1/1/2″″401/1/2″48×3.5″502″50.80×2.0
51(50)2″″502″60×3.5″702/1/2″63.50×2.5
64(70)2/1/2″″702/1/2″75.5×3.75″803″76.20×3.20
75(80)3″″803″88.5×4
1004″″1004″114×4