1.OD:219-3600mm,WT:6-30mm 2.Standard:API 5L PSL1,GB/T9711.1 3.Material:X42-X80,Gr.B, ... . Also for chemical industry, building structure and pile driving, etc.12. Export to theseCountriesCanada, USA, Peru, Chile, Colombia, Brazil, India, Malaysia ... , Kenya, South Africa, Spain, Italy, France, England, Belgium, etc13.CertificatesAPI 5L PSL1,PSL2 , API 5CT, ISO ,CE API ...