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Drill Collar

Specification：

Product: Drill Collar

Standard: API **1

Size: 3 1/8"***1"

Length: *0'***1'

Material: ANSI***7, ***5H, ***5HM alloy steel

Description:

Drill Collar is made from rolled or forged AISI***5H chrome-molybdenum steel. The content of chemical composition and microelement is controlled efficiently throughout the whole process.

Product Features:

Nonmagnetic drill collar is made from chrome manganese, low carbon austenitic alloy obtained by combining a proprietary chemical analysis and a rotary hammer forging process. The material is resistant to stress corrosion cracking, with high mechanical properties, low magnetic permeability, excellent mechanical machining properties and no tendency to galling.

According to its different figures and materials, it can be divided into three types:

Type A (columnar): made from ordinary alloy steel, both inside and outside of the cross section of the pipe are cyclical.

Type B (spiral): made from ordinary ally steel, with a spiral chute on the outer surface of the pipe.

Type C (non-magnetic): made from stainless alloy-steel of low magnetic permeability, both inside and outside of the cross section of the pipe are rounded.

Main Functions: it’s one of the most important components of drill stem. It can provide the bit with bit weight and improve the rigidity of drill stem.

It’s in accordance with the standard of SY/T********7 or API SPEC.**1.

Yours Faithfully,
Angela Oy (Sales Manager-Oilfield Equip. Dep.)

Xi'an Shanglin Oilfield Equipment Co., Ltd
Tel: **6 *9 *******6 
Skype: ouyangangela
Email: *[@********************br> Web: shanglin-oilfield.com