www.bjmetalwork.comExport DepartmentSylvia LiangPhone: +86 - 10 - 52891298/+86 - 15810189667Fax: +86 - 10 - 52997908
yangzhuang nanli,tongzhou district,beijing,ChinaBeijing, BeijingChina, 101101Web Page Link: http://www.toboc.com/beijingmetalworkpetroleumtechnologycoltd
The pipe body is in conformance in API 5DP with serious inspection in plant.Tool Joints are made of AISI4137 premium alloy steel fully Q and T with IPSEN furnace.All tool joints should be inspected at full length by fluorescence magnetic particle and ultrasonic meth`od.
Product Description: Our companys bits are used to drill Low -compressive strength soft formation ,high-compressive strength ,medium hard formation. 1 Long projection teeth are lengths used on high offset cones to provide the greatest penetration rates possible. 2.Wear-resistant hard facing is
The drill collars are made of 4145H modified chromium-molybdenum alloy steel acc. to API Spec.7. All threads can be phosphated, copperised or cold worked. All threads are machined with CNC Lathes-Double-Shouldered and a special thread, the max diameter of drill collar is 14 in. We can offer Slick Co