Anyang Longteng Heat Treatment Material Co.,Ltd offers high tensile, high impact performance alloy steel 4140 Fasteners including bolts, screws, stud bolts, full threaded rods, hex bolts, nuts and washers. AISI 4140 is high strength chromium molybdennum alloy steel grade used for producing A193 B7, B7M, A320 L7, L7M fasteners for low temperature bolting applications. 

Anyang Longteng major produce stud bolts, fully thread bolts, double head bolts, hex head bolts, round head bolts, anchor bolts in AISI 4140 alloy steel.