Product Description
Feature:
Pup joint arc made of AISI 4137 premium alloy steel fully and
machined by CNC lathes.All connections are phosphatized. Coated
with lubricant and provided with thread protectors.All tool joints
should be inspected at full length by fluorescence magnetic
particle and ultrasonic method.Tool joints are for pipes from 23/8"
to 6 5/8",grade is E75,G 105 and S135; upset style is EU,IEU or IU.