What Should Be Considered When Designing Stainless Steel Pipe Fittings?

Structural Rounding of Stainless Steel Pipe Fittings: All wall junctions in pipe fittings should feature cast fillets. In designs without fillets, metal accumulates at right angles, resulting in a larger hot spot radius than elsewhere, which can easily lead to shrinkage cavities and porosity. Furthermore, severe stress concentration occurs at the inner corners, making them prone to cracking. Designing fillets can prevent the occurrence of these defects.

In certain metals, crystals tend to intersect at right angles, resulting in weak intergranular bonding. This causes a decline in the mechanical properties of the fittings at the corners, increasing the likelihood of cracking. Therefore, corners should be designed with fillet radii. Casting with fillet radii facilitates the molding process, prevents sand holes caused by damage to sharp corners in the mold, reduces sand adhesion to the casting, and improves the aesthetic appearance of the casting.

Shandong Mingxing Stainless Steel Casting Co., Ltd. recommends: Avoid connections at intersections and sharp angles. To effectively prevent defects such as shrinkage cavities and shrinkage porosity in stainless steel pipe fittings, connections in the castings should avoid intersections. For small and medium-sized pipe fittings, staggered joints can be used, while large pipe fittings should use annular joints.