... ,DIN2634,DIN2635,DIN2636,DIN2637 DIN2638,DIN2673JIS:B2220 EN: 1092-1:2001 GOST:GOST12820-80,GOST12836-67,GOST12821 ... Alloy Steel Butt Welded Pipe Fittings (from 1/2 inch to 72 inch,including Elbow, bend, Tee ... ElbowDN15 to DN3600FlangeDN15 to DN3600TeeDN15 to DN3600ReducerDN15 to DN3600Seamless Steel pipeDN15 to DN1200ERWDN15 to DN1400SSAWDN200 to DN3600LSAW: DN300 to DN1400Wall thickness: 1mm to 160mm ...