Pipes built to API's different specifications work particularly well in the oil and petroleum industry.
Specifications such as API 5B, API 5D, API 5L and API 5CT are mainly used in these industries. Pipes produced to API 5D are intended for drilling and production purposes, while API 5B covers different aspects such as threading, gauging and inspection of tubing, casing and line pipe threads. Therefore, it is easy to differentiate between API 5D and API 5B pipelines.
API 5D Drill Pipe Specification
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API Specification Friction welding drill pipe |
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OD |
2 3/8'' |
2-7/8'' |
3 1/2'' |
4'' |
4 1/2 |
5 |
|
Wall Thickness (mm) |
7.11 |
9.19 |
9.35/11.40 |
8.38 |
8.56/10.92 |
9.19/12.70 |
|
Steel Grade |
E75 X95 G105 S135 R780 |
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Water well drill pipe
OD of pipe body: Φ50, Φ60, Φ73, Φ89, Φ102, Φ114, Φ127
OD of tool joint: Φ65, Φ75, Φ105, Φ127, Φ133.4, Φ158.8, Φ168
Tool joint material: 42CrMo 45 Mn2, 40 Cr, 35CrMo, 4137H
Length: R1:5.49-6.71m ;R2: 8.23-9.14m ;R3: 11.58-13.72m
API 5DP Gr S135 Pipeline Chemical Composition
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Grade |
Chemical Composition |
Mechanical Properties |
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|
P |
S |
Yield Strength(Mpa) |
Tensile Strength(Mpa) |
|
|
E-75 |
≤0.020 |
≤0.015 |
517-724 |
≥689 |
|
X-95 |
≤0.020 |
≤0.015 |
655-862 |
≥724 |
|
G-105 |
≤0.020 |
≤0.015 |
724-931 |
≥793 |
|
S-135 |
≤0.020 |
≤0.015 |
931-1138 |
≥1000 |
Dimension Tolerance Of Grade S135 Drill Stem Pipes
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Item |
Tolerance |
|
|
Pipe Body |
OD≤101.6mm |
+0.79mm |
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OD≥114.3mm |
+1% -0.5% |
|
|
Single Lengths |
-12.5% |
|
|
Weight |
+6.5% -3.5% |
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