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material

standard & specification

 
OTCG pipes for conveying gas, water and petroleum

Standard API Spec 5L, B, X42, X52, X60, X65, X70, API Spec 5CT (Oil Pipes), API 5D
Drill pipes Grade: E75, X95, G105, S135
Connection:NC26, NC31, NC38, NC40, NC46, NC50, 51/2FH, 6 5/8FH
Heavy Weight Drill pipes Size: 3 1/2", 4 1/2", 5", 5 1/2"
Drill Collar Size: 4 3/4", 6 1/4", 6 1/2", 7", 8", 9", 9 1/2"
Slotted liner and composite screen liner
Grades: pipes is manufactured under PSL 1 and PSL2 requirements.
pipes end: Plain,Threaded, Bevelled

Standard OD tolerance WT tolerance
API Spec 5L OD<60.3mm +0.41mm,-0.8mm +15%, -12.5%
OD≥60.3mm ±0.75%

Special couplings as specified on purchase order.
API 5L tubes (pipes) coatings: sepcificatioin GB and DIN standard

J55, K55,N80, L80 and P110, PSL 1, PSL 2, API 5L, Grade B, API 5L X42, API 5L X46, API 5L X52, API 5L X56, API 5L X60, API 5L X65, API 5L X70, API 5L X80

API 5CT:
There are four steel grades (J55, K55,N80, L80 and P110), two categories (nonupset and external upset) and six sizes (1.9", 2-3/8", 2-7/8 ", 3-1/2", 4", and 4-1/2") of tubing.

Outside Diameter Wall Thickness Type of End Finish
Grade
in mm in mm J55 K55 L80 N80 P110
2.375 60.3 0.167 4.24 PN PN PN -
0.190 4.83 PNU PNU PNU PNU
0.254 6.45 - PNU PNU PNU
0.259 7.49 P P P -
0.336 8.53 PU PU PU -
2.875 73.02 0.217 5.51 PNU PNU PNU PNU
0.276 7.01 - PNU PNU PNU
0.308 7.82 - PNU PNU PNU
0.340 8.64 - PU - -
0.392 9.96 - P - -
0.440 11.18 - P - -
3.500 88.9 0.216 5.49 PN PN PN -
0.254 6.45 PUN PUN PUN PUN
0.289 7.34 PN PN PN -
0.375 9.53 - PUN PUN PUN
0.430 10.92 - P - -
0.476 12.00 - P - -
0.530 13.46 - P - -
4.00 101.6 0.226 5.74 PN PN PN PN
0.262 6.65 PN PN PN PN
4.500 114.3 0.271 6.88 - P - -
0.337 8.56 - P - -
0.380 9.65 - P - -
0.430 10.92 - P - -
0.500 12.70 - P - -
0.560 14.22 - P - -
0.630 16.00 - P - -

OTCG pipes' Tolerance on dimensions: API Spec 5L PSL1, PSL2
API 5L Line pipes & ASTM Grades - Tensile Requirement

Grade Yield Strength Ultimate Tensile Strength Grade Yield Strength Ultimate Tensile Strength
PSL 1 Min Max Min Max PSL 2 Min Max Min Max
A25 25   45            
A 30   48   B 35 65 60 110
B 35   60   X42 42 72 60 110
X42 42   60   X46 46 76 63 110
X46 46   63   X52 52 77 66 110
X52 52   66   X56 56 79 71 110
X56 56   71   X60 60 82 75 110
X60 60   75   X65 65 87 77 110
X65 65   77   X70 70 90 82 110
X70 70   82   X80 80 100 90 120
 
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