Longway has authorized by ISO 9001, NS-1 and Russia GOST RTN . it is able to process drilling tools according to standard DS-1 under a full system of production design and quality control.. our oil drill rod have been tested by the third party, such as China national petroleum pipe research insititue and Russia petroleum pipe quality control center, the quality is stable and reliable.
Longway has authorized by ISO 9001, NS-1 and Russia GOST RTN . it is able to process drilling tools according to standard DS-1 under a full system of production design and quality control.. our oil drill rod have been tested by the third party, such as China national petroleum pipe research insititue and Russia petroleum pipe quality control center, the quality is stable and reliable.
Longway has authorized by ISO 9001, NS-1 and Russia GOST RTN . it is able to process drilling tools according to standard DS-1 under a full system of production design and quality control.. our oil drill rod have been tested by the third party, such as China national petroleum pipe research insititue and Russia petroleum pipe quality control center, the quality is stable and reliable.
Drill pipe joint is processd by 1500T gaint pressure forging machine to ensure the quality of joint for high compactness, cleanness, hard wear resistance, homogenization of excellent mechanical performance.
