... ,it is ISO 15552 standard cylinder ,we were have our DNG seires from 125mm to 320mm ,and this year we have ... made s For DNG series ,it is ISO 15552 standard cylinder ,we were have ... our DNG seires from 125mm to 320mm ,and this year we have ... new mold from bore 32-100mm ! So now ,for DNG series ,we have bore 32;40;50;63;80;100 ...