... ISO7/1, DIN2999, NPT shanxigoodwill g.i. pipe fitting g.i. pipe fitting 1.Welcome to SHANXI GOODWILL ... .i. pipe fitting MaterialMalleable casting iron StandardBS(EN10242) standard,ISO49/ISO5922/ISO7/4DIN(EN10242) standard,DIN2950/1692/2999ANSI standard, ... Union, BushingSurfaceHot-dipped galvanized, Normal black, Shining blackGradesHeavy series, Standard series, Medium series, Light seriesSize3/8", 1/2" ...