ANDY GUO
Sales manager

Standard: API Spec 7-1 or SY/T5144 Material: P530, P550, P580, P650, P690, P750, P750I Size: 3 1/8" up to 11" Magnetic Permeability (ASTM A 342): Max 1.005 Magnetic Field Variation: 40 gammas Max Application: For the inspection in the process of petroleum drilling Overview of Non-Magnetic Drill Collars Drill collars are thick-wall tubulars machined from solid steel bars and manufactured to specifications to meet and/or exceed API specifications. Our experience in materials specification, mechanical properties, heat treatment, machining and inspection are reflected in our product performance. Drill collars come in slick and spiral designs with additional features for safe and trouble-free operations. Why Choose JINBAICHENG for Non-Magnetic Drill Collars The reputation of JINBAICHENG in the manufacture and supply of Non-Mag drill string components is based upon extensive in-house experience both in metallurgy and precision manufacturing. JINBAICHENG has always been the leader in the development of Non-Mag materials, special manufacturing processes and testing procedures such as hammer peening and hot-spot testing.
Sales manager

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