Geological drilling & Exploration GB/T 9948-2013、GB/T 14976-2012、SY/T 5057-2018，DCDMA/ASTM/DIN/EN/ API 5CT/ API 5L

Geological Drilling Tubes

Name: Geological Drilling Tubes
Brand: Runfeng /Xuefeng
SKU: D40(50 Mn ) DZ50 （ 45Mn2）, R780 （36Mn2V）,R780（42MnMo7）,DZ60(45MnMoB）

Product Code: D40(50 Mn ) DZ50 （ 45Mn2）, R780 （36Mn2V）,R780（42MnMo7）,DZ60(45MnMoB） | Category: Geological drilling & Exploration