43,diming street, Mudanjing, Heilongjiang, China,157011
Our company has been the class 1 network supplier and member of council CNPC, industrial association CNPC SINOPEC, assigned suppliers CNOOC, ENERGYAHEAD. We have obtained use right API monogram certification ISO9001:***** products exported to USA, ...
drill collar (dc), drill pipe (dp), heavy weight drill pipe(hwdp), square kelly, hexagonal kelly, stabilizer, hole opener, roller reamer, casing scraper, internal casing cutter, external casing cutter, marine or mechanical, key seat reamer, kelly valve
