Apèsi sou lekòl la nan tiyo chofaj
ASME SA106, ASME SA179, ASME SA192, ASME SA210, ASME SA213, ASME SA335, elatriye
Klas tiyo chofaj
Tib asye san pwoblèm pou chodyèr presyon ki ba ak mwayen
GB/T3087-2008 10# Steel, 20# Steel
Tib asye san pwoblèm pou chodyèr presyon ki wo
GB/T5310-2017 20G 、 20mng 、 25mng, elatriye
Asme sa 106 gr.a, gr.b, gr.c, elatriye
ASTM A210 GRA. GRC
ASTM A213 Gr. T5, T9, T11, T22 elatriye
ASTM A335 Gr. P5, P9, P11, P22, P91, P92 elatriye.
