Example 1:DN2000mm, H=150mm, the strainer pattern is SP, the material is NS-80, the grill, the supporting material is 316 upper garment type silk screen anti-entrainment device, the mark is: HG/T21618 silk screen anti-entrainment device S2000-150 SP NS-80/316. example 2:DN4000mm, H=100mm, the strainer pattern is DP, the material is 316L, the grill, the supporting material is 304 takes off costume the type silk screen anti-entrainment device, the mark is: HG/T21618 silk screen anti-entrainment device X4000-100 DP 316L/304. |