2019-07-04 948
Hardnesstestisneededintheprocessofusingironpipes,butitisdifficulttotestthehardnessofironpipesinthegeneralbodyofironcastings,soironpipesareusuallycompletedbymultipleparts.Hardnesstestofironpipecanbecar
2019-07-04 829
Intheprocessofcasting,therawmaterialofcastironisspheroidized.Mostofthecarbonincastironarrangementmaybegraphitized.Ductileironcastingshavegoodstrengthandendurance.Theyarewidelyusedinmechanicalparts.The
2019-07-04 839
Ironpipefittingscanbedividedintothreetypes:injection,coatingandrolling.Thetwomostpopularmethodsarecoatingorrolling.Theyaresometimesabstractlyreferredtoasplastic-linedpipefittings.Butevenifitispainting