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Member Since 9 Years
Nature of Business Supplier Year of Establishment 2011Ask for more detail from the seller
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Api spiral drill collar
the spiral drill collar of lake is made from aisi 4145h modified alloy steel, and completely meets the requirement of api spec 7-1 and syt5144 standard. It is a kind of drill collar which adds three dextrogyrate spiral groove on the outer circle of ordinary drill collar when processing, and the purpose is to reduce the area of contact and friction with the well wall, which can effectively prevent the pressure sticking. The single weight of the spiral drill collar is round about 4% lighter than the ordinary drill collar with the same specification, and the shape and thread of the both ends are the same with the drill collar.
Advantages:
a. The heat treatment technique is conducted within the range of full length of products.
B. The bottom of thread of spiral drill collars can be processed with cold roller according to the customers' requirements.
C. All of the threads are treated with phosphorization and copper plating.
D. The rolled or forged aisi 4145h chrome molybdenum steel is used, which can keep effective control to the chemical compositions and microelements.
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