drill collar

drill collar

The drill collar are trepanned and drifted to API Spec 7. Grinding crafts adopted finish boring technology eliminates regions of the weld stress concentration, making welding appearance more perfect, and increasing their life. The full length thermal treatment ensure the mechanical performance fullfil even exceed API Spec 7 requirements.

Product Origin: china
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Brand Name: pipe

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Address: Shiruida Machinery Import & Export Co., Ltd
Zip: 300300
Telephone: 86-22-24716013
Fax: 86-22-24716023
E-mail: pipe@shiruida.cn
Website: http://sunshuliali.ietrade.com.cn

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