API 5D oil pipe drill pipe for well drilling

Tianjin Dalipu Oil Country Tubular Goods Co.Ltd

Roll over the image to zoom in

Posted On

13-Sep-17

Product Details

PROCESS FLOW SHEET
1.materials→detection→heat pipe ends→upsetting pipe ends→heat treatment→detection→alignment→friction welding→coaxial tesst→welding zone annealing→chipping edges→welding zone tempering→griding inside and outside→pressure inspection of three points→hardness test,magnetic particle tesing,ultrasonic flaw detection of the welding zone→pipe body detection,weighing,drift diameter and appearance detection→painting;marking;packing and being finished products.

standard api 5d
mate

View More