pipe fitting(GI pipe Fitting,steel conduit fitting) two side fitting standard:BS31 1/2",3/4",1",1-1/4",1-1/2",2",2-1/2",3",4 steel pipe fitting/gi pipe fittingsteel pipe fittingstandard:BS31 BS4568specification:Φ16,Φ20,Φ25,Φ32,base thickness:1.0mm salience thickness:0.8mm pipe fitting(GI pipe Fitting,steel conduit fitting)