AW BW NW HW PW Casing Tube

Product Description

W-series casing tubes (API drill pipe) are made as per DCDMA standards, the most popular sizes are AW, BW, NW, HW and PW, which are widely applied in geotechnial drilling.

Raw Materials: We choose the best steel tubes in the market to manufacture our drill rods and casing pipes. Instant check will be conducted after the raw material is received in our factory so that it can make sure the compositions and specifications meeting applicable stardard requirements.

Heat Treatment Control: Heat treatment will greatly make sure  the material strength and  the thread wear life of the drill rods and casings. We conduct either tru-wall or both ends heat treatment to the tube body.

Thread Opening Process: Precision of threads will impact  the use effects and serve time of drill rod and casings. CNC latches and form cutter are used in thread opening process to minimize error.

Additional Thread Treatment: Surface of the threads will be cleaned to remove burr adhered after threads are opened. At last , the tread surface will be phosphated to improve surface conditions.

Casing Tube and Core Tube Specifications

Size	O.D x WT (mm)	Material	Standard
AW	Φ57.4x4.4	R780	DCDMA
BW	Φ73.2x6.35	R780	DCDMA
NW	Φ89.1x6.35	R780	DCDMA
HW	Φ114.3x6.35	R780	DCDMA
PW	Φ139.7x7.10	R780	DCDMA

Remark: Length and threads depend on customer's demands.

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