octg meaning in English

石油管材

Terminology of imperfections in octg and line pipe
石油管材常见缺陷术语
Specializes in the production of octg linepipe , oilcasing and tube ,
询问自己身边的朋友在看
Assessment procedure for octg quality
油井管产品质量评价方法
Nondestructive testing method for octg liquid penetrant flaw detection for nonferrous magnetic thread
油井管无损检测方法非铁磁体螺纹渗透探伤
We are an international trading company based in western india . we specialize in trading of flat rolled steel , long drawn steel , indian tea , octg etc
我们是国际贸易公司总部设在西印度.我们专门从事钢材贸易的单位,漫长钢、印度茶、油井等