AISI H13 4Cr5MoSiV1 Retained mandrel bars MPM mandrel bars

Mandrel bar plays a crucial role in producing large diameter seamless pipes in modern industries. During producing, it has to bear strong and complicate stretch, compressing touching stress and high temperature cold-hot yield stress under high speed cycling. Under there circumstances, chemical components, mechanical properties, no-metallic inclusion, grain size, microstructure, ultrasonic test, size precision, surface finish, all such factors are required very strictly. In Qingdao Yutongda Metal Materials Co., Ltd. Mandrel bar is made from AISI H13 (4Cr5MoSiV1).