• Model NO.：API 5CT J55,K55 OIL&GAS SEAMLESS CASING STEEL PIPE
• Steel Grade：API 5CT J55,N80-1,N80q,L80,P110
• Standard：Pls1 Psl2 Psl3
• Threaded：Nu,EU 8rd,LC
• Length：R1,R2,R3
• Loading Port：Tianjin,Shanghai
• Pipe Type：Seamless &ERW
• Transport Package：Steel Strip in Bundle&Wooden Case
• Specification：OD 4-1,2INCH-30INCH
• Trademark：OEM,TJTC,RT,SLT
• Origin：Hebei,Shandong,Jiangsu,Zhejiang
• HS Code：730429
• Production Capacity：50000tons

StandardAPI 5CT/ ISO11960GradeGroup.1H40/PSL.1, J55/PSL.1, J55/PSL.2, J55/PSL.3, K55/PSL.1, K55/PSL.2, K55/PSL.3,
N80(1)/PSL.1, N80(1)/PSL.2, N80(Q)/PSL.1, N80(Q)/PSL.2, N80(Q)/PSL.3Group.2M65/PSL.1, M65/PSL.3, L80/PSL.2, L80(1)/PSL.1, L80(1)/PSL.3, L80(9Cr)/PSL.1, L80(13Cr)/PSL.1, C90/PSL.1, C90/PSL.2, C90/PSL.3, T95/PSL.1, T95/PSL.2T95/PSL.3Group.3P110/PSL.1, P110/PSL.2, P110/PSL.3,Group.4Q125/PSL.1, Q125/PSL.2, Q125/PSL.3,Minimum Order Quantity20 TonOutside Diameter RangesTubing1.05 inch to 4 1/2 inch or 48.26mm to 114.3mmCasing4 1/2 inch to 30inch or 114.3mm to 762mmWall Thickness According to API 5CT StandardLengthTubingR1 (6.10m to 7.32m), R2 (8.53m to 9.75m), R3 (11.58m to 12.80m)CasingR1 (4.88m to 7.62m), R2 (7.62m to 10.36m), R3 (10.36m to 14.63m)TypeSeamlessType of End-FinishTubingP, I, N, UCasingP, S, B, L
 Casing and tubing for Sour Oil and Gas Service must have a good anti-SSCC (sulfide stress corrosion and cracking) performance in the environment where hydrogen sulfide corrosion exists. After an indepth study, we has successfully developed tubular goods of the Cr-Mo series for this purpose with good hardenability and tempering stability that when tempering takes places at certain temperatures uniform and fine sorbite structures can be obtained. Their mechanical properties can meet fully the requirements of corresponding grades and their anti-SSC performance is excellent by regulating the chemical composition and adopting different heat treatment procedures
Characteristics:
1. Materials: The chemical compositions have been carefully determined to provide resistance to sulfide stress corrosion as well as to insure complete through wall hardening.
 
2.Heat Treatment: Quenching and Tempering are conducted under rigid temperature control to assure homogeneous physical properties and microstructures.
 
3.Micro Structure: These grades exhibit fully tempered martensite which is considered to be the most desirable for resistance to sulfide stress corrosion cracking.
 
4. Tensile Properties and Hardness: Yield Strength is limited within a narrow range and hardness is controlled to within the predetermined maximum limit.

5. Sulfide Stress Cracking (SSC) Performance: Whole grades are designed for 85% or 90% SMYS in NACE condition. Excellent SSC resistance has been achieved through rigorous, chemical composition, heat treatment, microstructure, tensile properties, hardness and so on.
 
Pipe inspection:
A full length non destructive inspection is performed in accordance with API 5CT for external and internal, longitudinal and transverse defects with a standard notch depth equal to 5% of the specified wall thickness.