Standard FC gate valves are in accordance with API 6A 21th latest Edition, and use the right materials for H2S service according to NACE MR0175 standard. د محصول توضیح کچه: PSL1 ~ 4 د موادو طبقه: AA ~ ff د فعالیت اړتیا: PR1-PR2 د حرارت درجه ټولګی: PU
