原帖由 chongziwz8 於 2008-11-15 15:51 發表
API 603 series stainless steel gate valve wall thickness is designed as per ANSI B16.34, cost effective and light weighted compare with conventional API 600 valve. API 603 series stainless steel gate ...
歡迎光臨 香港乒乓網 (http://hkttf.com/) | Powered by Discuz! 6.0.0 |