ASME

ASME

API ASTM ASME NACE ISO GB JB SY NB
  • ASME B16.3

    18
    05

    ASME B16.3

    Malleable Iron Threaded Fittings Classes 150 and 300...
  • ASME B1.20.1

    18
    05

    ASME B1.20.1

    Pipe Threads, General Purpose (Inch) 通用管螺纹（英制）...