... and TubingJ55,K55,N80,L80,T95,P110,Q125(PSL1)API 5CT11Line pipeB,X42,X52API 5LCertified by seven classification societies, ... BV (France), NK (Japan), and GL (Germany).Certified by API (the American Petroleum Institute).Our Factory specializes in the production ... hollow sucker rod, oil cracking tube, tubing, American standard tube, European standard tube, etc. It has an annual production capacity of ...