Product name
3 1/2'' Geological drill pipe and geotechnical drill rod
Color
Customer's Requirement
Usage
water well,mine,oilfield,gas
Diameter
from 2 3/8" to 6 5/8"(50-168mm)
Length
R1~R3 or customized
Thread type
2 3/8" API REG, 3 1/2" API REG (API thread, customized)
product technology
Friction welding, nitrading, upsetting