Business license
Special Equipment Manufacturing License
PED Quality Certification
Factory Approval Certificate
Jacket Flange Manufacturing Process
Heat treatment process for increasing the hardness of the overall manhole flange sealing surface
An improved high-temperature-resistant pressure flange and a method for its preparation
A butt-welded sealing flange and its manufacturing process
Contact Us
Service Hotline:0519-86211051
Email:changzhou@erfalan.com
Address: Xinkang Village, Xueyan Town, Wujin District, Changzhou City, Jiangsu Province