Shandong Liaocheng Youyi Steel Pipe Co., Ltd.

Name: Certificate of registration
Certificate No: 11708 QU 0057-10ROS
Range: manufacture,sales & service of stainless steel pipe
Reference: CAS ,    IAF

Name: Approval of manufactring process
Certificate No: NKR 358ROI
Range: manufacturing process
Reference: NIPPON KAIJI KYOKAI

Name: Certificate of Quality Management System
Certificate No: 04006Q11055HCM
Range: The manufacture of seamless stainless steel pressure piping (A,B level)
Reference: CCIC

Name: Certificate of occupational health and safety management system
Certificate No: 110009H
Range: The occupational health and safety management activities ralated to manufacture and sale of stainless steel pipe
Reference: EWC

Name: Certificate of environment management system
Certificate No: 110009E
Range: The environment management activities related to manufacture and sale of stainless steel pipes
Reference: EWC

Name: Certificate of authority to use the official API Monogram
Certificate No: 5L-0759
Range: manufacturer of line pipe plain end at PSL1
Reference: American Petroleum Institute

Name: Approval condition for manufacturing process of steel tubes for boilers and heat exchanges
Certificate No: 11EW 1308 ROL
Range: boilers and heat exchanges
Reference: NIPPON KAIJI KYOKAI