Sour Service Drill Pipe (H2S)
- PRODUCT DETAIL
Standard: IRP1.8, NACE MR0175 / ISO 15156
Size Range: 2-3/8" ~ 6-5/8"
Special Features:
• Strict control over the S and P content (S+P < 0.03%)
• Increase of the Cr, Mo content, unique heat treatment process, grain refinement. (The grain size exceeds Grade 8 standards in ASTM Standard)
• Compound with double shoulder high torque connection (DS, DSHT)
• Strict control over the intensity, rigidity and other indexes.
Specification and Feature of Materials:
|
Contents |
DP95SS |
DP105SS |
|
|
PIPE SPECS |
Chemical composition wt% |
S≤0.005, P≤0.010 |
S≤0.005, P≤0.010 |
|
metallographic structure |
tempered martensite, ≥95% |
tempered martensite, ≥95% |
|
|
Grain size |
ASTM E112 Grade 8 or finer |
ASTM E112 Grade 8 or finer |
|
|
Yield strength |
655/758MPa(95/110KSI) |
724/827MPa(105/120KSI) |
|
|
Tensile Strength |
724/896MPa(105/130KSI) |
793/965MPa(115/140KSI) |
|
|
Elongation % |
≥17 |
≥17 |
|
|
Impact Energy (7.5*10*55, -20℃) |
(single)≥80J(59Ft-Lb) |
(single)≥80J(59Ft-Lb) |
|
|
Hardness HRC |
Single18---27, average≤25 |
Single21---29, average≤28 |
|
|
sulfur tolerance |
≥557MPa(80.8KSI), ≥85%SMYS |
≥616MPa(89.2KSI), ≥85%SMYS |
|
|
TOOL JOINT SPECS (DPTJ110SS) |
Chemical composition |
S≤0.005, P≤0.010 |
S≤0.005, P≤0.010 |
|
metallographic structure |
tempered martensite, ≥90% |
tempered martensite, ≥90% |
|
|
Grain size |
Grade 7 or finer |
Grade 7 or finer |
|
|
Yield strength |
758/862MPa (110/125KSI) |
758/862MPa (110/125KSI) |
|
|
Tensile Strength |
862/1000MPa(125/145KSI) |
862/1000MPa(125/145KSI) |
|
|
Elongation % |
≥15 |
≥15 |
|
|
Impact Energy (10*10*55, -20℃) |
Single≥90J(66Ft-Lb) |
Single≥90J(66Ft-Lb) |
|
|
Hardness HRC |
Single≤32, Average≤30 |
Single≤32, Average≤30 |
|
|
Sulfur Tolerance |
≥493MPa(71.5KSI) |
≥493MPa(71.5KSI) |
|
|
≥65%SMYS |
≥65%SMYS |
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