不锈钢针头规格对照表型号外径（mm）内径（mm）壁厚（mm）对应国内型号11G3.062.640.2112G2.762.400.1813G2.411.990.2114G2.111.690.2120号15G1.811.450.1816G1.611.250.1816号17G1.481.120.1818G1.260.900.1812号19G1.060.700.1820G0.900.600.159号21G0.810.510.158号22G0.710.410.157号23G0.630.330.156号24G0.550.300.135.5号25G0.510.260.135号26G0.450.230.114.5号27G0.410.190.114号28G0.350.170.093.5号29G0.330.150.0930G0.310.130.093号。