GB / T 5310-2017 20G, 20mng, 25mng, thiab lwm yam
ASME SA 106 GR. B, gr. C
Asme sa 210 gr. A1, gr. C
Asme Sa 213 T11, T12, T22, thiab lwm yam
ASMEA 33 P11, P12, P22, thiab lwm yam
Seamless cov hlau tubes rau siab-siab boilers
-
Lub xov tooj
-
E-mail
-
Whatsapp
-
Tus kheej
-
Lub ncov roob