This standard specifies the types, specifications, technical requirements, test methods, protection, marking and packaging requirements of drill collars. This standard applies to the design, manufacturing, inspection, testing and acceptance of drill collars used in oil and gas drilling projects.
SY/T 5144-2013 Referenced Document
ASTM E709 Standard Guide for Magnetic Particle Examination
GB/T 10561 Standard grading chart microscopic examination method for determination of non-metallic inclusion content in steel*, 2023-05-23 Update
GB/T 222 Permissible tolerances for chemical composition of steel products
GB/T 223.59 Iron,steel and alloy.Determination of phosphorus content.Bismuth phosphomolybdate blue spectrophotometic method and antimony phosphomolybdate blue spectruophotometric method
GB/T 223.68 Methods for chemical analysis of iron, steel and alloy. The potassium iodate titration method after combustion in the pipe furnace for the determination of sulfur content
GB/T 22512.1 Petroleum and natural gas industries.Rotary drilling equipment.Part 1:Rotary drill stem elements
GB/T 22512.2-2008 Petroleum and natural gas industries.Rotary drilling equiment.Part 2: Threading and gaugingof rotary shouldered thread connections
GB/T 228.1 Metallic materials—Tensile testing—Part 1: Method of test at room temperature*, 2021-12-31 Update
GB/T 229 Metallic materials—Charpy pendulum impact test method*, 2020-09-29 Update
GB/T 4334 Corrosion of metals and alloys-Test methods for intergranular corrosion of austenitic and ferritic-austenitic (duplex) stainless steels*, 2020-04-28 Update
GB/T 4336 Determination of multi-element content in carbon steel and medium and low alloy steel Spark discharge atomic emission spectrometry (conventional method) Amendment No. 1
GB/T 6394 Determination of estimating the average grain size of metal*, 2017-02-28 Update
SY/T 6858.3 Nondestructive testing method for OCTG.Part 3:Magnetic particle testing for drilling tool thread