API oil pipes

The American Petroleum Institute, commonly referred to as API, is the largest U.S trade association for the oil and natural gas industry. It claims to represent about 400 corporations involved in production, refinement, distribution, and many other aspects of the petroleum industry.

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