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buttress thread specification oilfield seamless casing coupling standard API SPEC...
API 5 1/2 J/K55 N80 casing coupling BC/LC oil pipe coupling clamp casing collar stan...
Standard: API Standard: API 5CT Grade: API J55-API P110 Grade: API P110 Thickness: 5....
API seamless steel pipe used for petroleum pipeline,API oil pipes/tubes Standard AP...
factory supply hot rolled fox tube api casings pipe Standard API 5CT/ ISO11960 Grade...
API casing and tubing couplings Type of coupling: Standard: API 5CT & 5B Steel Gra...
The material is focus on high carbon steel like S35C\S45C\S55C, alloy round steel lik...
Commodity: Seamless alloy steel pipe Manufacture method: cold rolled, cold drawn, ...
Supply DIN17175, 15Mo3,10CrMo910 steel pipe PRODUCTION DETAILS : Commodity: Seaml...