Tubing and Casing for Special Service(13 chrome)
For oil and gas reservoirs with high sulfur content that are likely to cause casing corrosion and cracking, GS has independently developed 80S/SS～110S/SS grades of oil well pipes with hydrogen sulfide stress corrosion resistance series, which have excellent mechanical properties and resistance to hydrogen sulfide stress corrosion cracking. Other grades mainly include 1%chrome, 3%chrome, 9% chrome, 13 chrome, super 13, etc.
Drill Pipe
GS provides users with all steel grades and pipe end types of API SPEC 5DP standards, including: E, X, G, S steel grades, and pipe end types such as outer upsetting, inner upsetting, and inner&outer thickening. The product size covers all the outer diameter and wall thickness specifications of the API SPEC 5DP standard and the three product specifications of PSL 1, PSL 2, and PSL 3. While ensuring the strength, it has good toughness and high torsional strength, which can withstand huge both internal and external pressure, distortion, bending and vibration and provide mud channels for oil and oil well drilling and transfer tension and torque.
Grades: E75 X95 G105 S135
Tool joints:
-External upset: NC26. NC38, NC46,NC50,etc.
-Internal external upset: NC50, 5 1/2 FH, 6 5/8 FH, etc.
Internal Coating: DPC, TC2000, TK-34, TK-34P, TK-34XT,etc.
Hard banding: ARNCO 100XT, ARNCO 300XT, BOTN 1000, BOTN 3000,etc.
Line Pipe
Line pipes are mainly used for the transportation of gas, water, oil and other media in petroleum, natural gas, chemical, electric power and other industries. The line pipe products independently researched and developed by GS have now formed the manufacturing capabilities of multi-purpose and high-end products such as PSL1 line pipe, PSL2 line pipe, subsea line pipe, acid line pipe, and cryogenic line pipe, which can meet the different needs of customers. The highest strength level can reach X100Q/L690Q, the outer diameter range of the steel pipe: 60.3～762mm, and the wall thickness range: 3.5mm～120mm. The quality of GS steel line pipe products is stable and widely used in many key engineering projects at home and abroad.
End type: bevel end/ plain end.
PSL1/PSL2/PSL3
Coating: 3LPE, 2LPE,anti-slip,concrete coating
