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