... :J55,K55,N80,L80,p110 3.technology:seamless pipe 4.OD:114.30-508.00mmoil well casing1.standard: API 5CT2.Steel ... grade:J55,K55,N80,L80,p1103.technology:seamless pipe4.OD:114.30-508.00mmAPI 5CT casing pipe specificationShandong Jialong Petroleum ...