1, Seamless steel pipes 2,OD:89-219mm 3, W.T.:4.5-20mm 4, Certificate: ISO9001, API 5L Pipe ParametersOutside ... .5-612168612180612194612203612219612140-2197-109-11140-21912-207-9Note: 10#, 20#3, 30#, 45#, 16MN, 27SIMN, 37MN5, 35MN2V, 42CRMO, 40CR and other kinds ...