Welcome to SYI Group
About SYI Couplings :
Specialist in Pipeline and Construction Products & Services!
Manufacture Process & Quality Control :
Grinding & Shot Blasting
Coating and Lining
Couplings & Flanged Adaptors Installation Instructions :
Warning: SYI Couplings and Flanged Adaptors don't restrain axial pipe movement!
More certification ... (Contact us!)
SYI Industrial Co., Ltd.