Specifications
outer tube 
1alloied material outer tube 
2thru-wall heat treated tube body 
3ISO control process 
4Cold rolled
HQ NQ Drill Pipe
 We produce a wide range of drilling tool including drill rod, wireline core barrel (AQ-PQ) and assemblies, synthetic diamond core bits, natural diamond surface-set core bit, PDC bits (core or noncoring), casing shoes, reaming shells, overshot, hoisting plug, water swiel, wrench.
 
These are all manufactured to the strictest quality standards as British / Swedish / DCDMA / CDDA / Metric standards, and used around the world in a great variety of applications. We are the member of the National Drilling Association (NDA). We are committed in carrying out advanced technological research, and providing customers with products of outstanding quality and satisfied service.
 
Size Available:
"Q" Series: BQ, NQ, HQ, and PQ.
"WJ" Design: AWJ, BWJ, NWJ, KWJ, HWJ
"W" Design: RW, EW, AW, BW, NW, HW
Metric Series: 33, 42, 50
We also can produce various sizes of casing tubes
Size Available:
"W" Design: RW,EW,AW,BW,NW,HW,PW,SW,UW,ZW/HWT,PWT
Metric Series: 46, 56,66,76,86,101,116,131,146
"X" Design: RX, EX, AX, BX, NX, HX, PX, SX, UX, ZX
All Chinese sizes.
We produce a wide range of drilling tool including drill rod, wire line core barrel (AQ-PQ) and assemblies, synthetic diamond core bits, natural diamond surface-set core bit, PDC bits(core and non-coring),casing shoes, reaming shells, overshot, hoisting plug etc.