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