... Cast Iron Pipe Fitting1.standard: BS, DIN ,American 2.ISO SGS CIQ 3. hot deep galv BS Standard Galvanzied Blackheart Malleable Cast ... etc.Size18"-6"Thread StandardBS ANSI & DINFinishBlack, Eclectic Galvanized, Hot Dipped Galvanized, all be antirust treatmentPackingCartons, woven bags, wooden ... joining pipe lines of team, gas, oil, air BS Standard Galvanzied Blackheart Malleable Cast Iron Pipe Fitting