Tefico has passed the ISO9001:2000 and API SPEC Q1,and has the right to use API monogram 4F,7K.

The company can design new and transformative types according to users' requirements

The substructure types used are skid mounted, truck mounted/mobile, trailer mounted,, piled box, sling-shot and swing lift etc.

 Piled box substructure is high in the front section to meet requirement of installing standard BOP stack and is low in the rear section to meet requirement of installing drawworks and transmission block.

 Sling-shot substructure, the drill floor and equipment on the drill floor can be installed in low position. The mast can be raised when the drill floor is in its low position and then the drill floor and mast can be raised integrally. In the two side of drill floor has hydraulic buffer to buffer the power when raise the rig and push as power when put down the rig.

Swing-lift substructure, the drill floor and the equipment on the frill floor can be installed in low position. The mast support leg can be assembled in low position and the mast be raised after drill floor being raised.

Substructure	DZ60/3-T	DZ90/4.5-K	DZ170/4.5-K
Rotary beam load, kN	600	900	1700
Setback load, kN	300	500	900
Height of drill floor, m	3	4.5	4.5
Clear height under RT beam, m	2.2	3.4	3.2
Substructure	DZ225/7.5-K	DZ315/9-S	DZ450/10-S
Rotary beam load, kN	2250	3150	4500
Setback load, kN	1200	1600	1600
Height of drill floor, m	7.5	9	10.5
Clear height under RT beam, m	6.2	7.6	8.8