• Ministry of Commerce of the P.R.China - China Commodity Net

    Casing is a large-diameter pipe that serves as the structural retainer for the walls of oil and gas wells, or well bore. It is inserted into a well bore and cemented in place to protect both subsurface formations and the wellbore from collapsing and to allow drilling fluid to circulate and extraction to take place.

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  • Ministry of Commerce of the P.R.China - China Commodity Net

    ASTM A193 Grade B7/B7M ASTM A320 Grade L7/L7M SAE J429 Grade 2/5/8 DIN 976 Class 4.8/8.8/10.9 ASTM A193 Grade B16 ASTM A193 Grade B8/B8M ASTM A320 Grade B8/B8M Structural Bolts ASTM A325 Type 1 ASTM A490 Type 1 DIN6914 Class HV-10.9 Heavy Hex Nuts ASTM A194 Grade 2H/2HM ASTM A194 Grade7/ 7M DIN934 H=D Grade 2H/2HM DIN934 H=D Grade 7/7M Hex …

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