IK-CHINA LIMITED Special manufacturer of boiler tubes, heat exchanger tubes, L, LL, KLM finned tubes, high frequency welded helical (spiral) finned tubes, serrated finned tubes, hot dipped galvanized oval (elliptical) finned tubes, rectangular finned tubes, condenser fin flat tubes, extruded finned tubes, G embedded finned tubes, laser welded finned tubes, Oval finned tubes, aluminum plates, aluminum welding rods, seamless finned tubes with two longitudinal opposite fins, studded pipes, double H finned tubes, casting alloy tubes HK40 (reformer tubes), inner finned tubes, longitudinal finned tubes, air cooled heat exchanger, economizers, elbows, welded pipes

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
Outside Diameter		Wall Thickness		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
4.00	101.6	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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