タイトルまたは説明

Kuohua Industry's non-magnetic products include no-magnetic drill collar,non-magnetic confined drill pipe, non-magnetic stabilizer, etc. Material is high purity nonmagnetic steel, with strict chemical compostions, special heat treatment and precision forging process.

Our non-magnetic products completely meet the requirement of API SPEC**1.

API standard  mechanical property requirement of non-magnetic products are:

Magnetic property: non-magnetic products' relevant magnetic conductivity is not higher than 1.*1;

Magnetic field gradient: magnetic field shall not deviate from uniform magnetic field 0.*5μt.

Corrosion resistance: all pass the ASTM A **2 test E,.