庆阳SOP for plate flat welding flange
庆阳Blind flange bl
庆阳Threaded flange tr
庆阳Flat welding flange with neck
庆阳Neck butt welding flange
Add: B3 Workshop, Jinze town industrial zone,Qingpu,Shanghai
Tel: 021-59261579
Email: panhy@sh-wakamatsu.com
