2019-07-04 1214
Hardnesstestisneededintheprocessofusingironpipes,butitisdifficulttotestthehardnessofironpipesinthegeneralbodyofironcastings,soironpipesareusuallycompletedbymultipleparts.Hardnesstestofironpipecanbecar
2019-07-04 1066
Intheprocessofcasting,therawmaterialofcastironisspheroidized.Mostofthecarbonincastironarrangementmaybegraphitized.Ductileironcastingshavegoodstrengthandendurance.Theyarewidelyusedinmechanicalparts.The
2019-07-04 1059
Ironpipefittingscanbedividedintothreetypes:injection,coatingandrolling.Thetwomostpopularmethodsarecoatingorrolling.Theyaresometimesabstractlyreferredtoasplastic-linedpipefittings.Butevenifitispainting