Premium Connection TJ-4(equivalent to PH-6)PH-6 TubingOD:1.315"-4-1/2"Steel grade:J55 K55 N80 L80 P110 etcStandard:API5CTContact:BonneXuEmail:BonneXu@dlpoctg.comSkype:BonnieXu22Linkedin:BonnieXuTel:+86-13602055205WeChat:13602055205