Min. Order Reference FOB Price
1 Piece US$1.00-1,111,111.00 / Piece
Product Description
Highlights: 1. Screw: 38CrMoAlA high quality nitriding steel, quenched and nitrogen treatment; The spiral surface hardness >HRC62, hard layer depth 0.55-0.7mm; Helical structure in the extrusion and feeding phase with Isometric deep structure; In the plastication stage with main/subsidiary ...