IS 19112 : 2025/ISO 11961 : 2018 Petroleum and Natural Gas Industries - Steel Drill Pipes

ICS 75.180.10; 77.140.75

MTD 19

NATIONAL FOREWORD

This Indian Standard which is identical to ISO 11961 : 2018 'Petroleum and natural gas industries - Steel drill pipe' issued by the International Organization for Standardization (ISO), was adopted by the Bureau of Indian Standards on the recommendation of the Steel Tubes, Pipes and Fittings Sectional Committee and approval of the Metallurgical Engineering Division Council.

Steel drill pipes are high-strength alloy steel tubes essential for oil and gas drilling operations. They transmit torque from the rig to the drill bit, circulate drilling fluids for cooling and debris removal. With a seamless pipe body and threaded ends, they ensure safe and reliable drilling during exploration, production, and directional drilling.

The text of ISO standard has been approved as suitable for publication as in Indian Standard without deviations. Certain terminologies and conventions are, however, not identical with those used in Indian Standard. Attention is especially drawn to the following:

a) Wherever the words 'International Standard' appear referring to this standard, it should be read as 'Indian Standard'; and

b) Comma (,) has been used as a decimal marker while in Indian Standards the current practice is to use a point (.) as the decimal marker.