Boiler yeeb nkab
Boiler yeeb nkab
hlau loj
20G, 15CrMoG, 12Cr2MoG, 12Cr5MoG, 12Cr9MoG, T11, T22, T5, T22, T9, T91
txheej txheem ntau lawm
GB5310 《 seamless steel raj rau high-pressure boiler 》
ASME SA213 Seamless ferrite thiab austenitic alloy steel raj rau boiler, super rhaub thiab kub exchanger