casting flange parts 1) Take photos for every step. 2) Produce according to drawing or sample 3) Have ... , parcel, bale, package, barrel, etc.Casting OEM serviceMaterial: iron, gray iron, ductile iron, steel, stainless steel, carbon steel, alloyProcess: sand casting, investment ... each bulk.Send the photos and test data of each step to customers.4. Machining process controlProduce the samples according ...