五指山SOP for plate flat welding flange
五指山Blind flange bl
五指山Threaded flange tr
五指山Flat welding flange with neck
五指山Neck butt welding flange
Add: B3 Workshop, Jinze town industrial zone,Qingpu,Shanghai
Tel: 021-59261579
Email: panhy@sh-wakamatsu.com