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