Drill Pipe

Api Drill pipe is made from alloy steel. Acc.to API Spec.5DP. All threads are phosphated, copperized or cold worked. All connections are equipped with pressed steel thread protectors.

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■ Precauciones

Drill pipe is made from alloy steel. Acc.to API Spec.5DP. All threads are phosphated, copperized or cold worked. All connections are equipped with pressed steel thread protectors. All threads are machined with CNC Lathes-Double-shouldered and special threads.

◆API Drill Pipe Size

Size （inch）	Weight Designation （PPF）	Calculated Weight		Wall Thickness		Grade	Upset Ends	Tools Joint Designation
Size （inch）	Weight Designation （PPF）	lb/ft	kg/m	in	mm	Grade	Upset Ends	Tools Joint Designation
2 3/8	6.65	6.27	9.33	0.280	7.11	E、X、G、S	EU	NC26
2 7/8	10.40	9.72	14.47	0.362	9.19	E、X、G、S	EU、IU	NC31
3 1/2	9.50	8.81	13.12	0.254	6.45	E、X、G、S	EU、IU	NC38
3 1/2	13.30	12.32	18.34	0.368	9.35	E、X、G、S	EU、IU	NC38、 NC40
3 1/2	15.50	14.64	21.79	0.449	11.4	E、X、G、S	EU、IEU	NC38、 NC40
4	14.00	12.95	19.27	0.330	8.38	E、X、G、S	EU、IU	NC40
4 1/2	13.75	12.25	18.23	0.271	6.88	E、X、G、S	EU、IU	NC46
4 1/2	16.60	15.00	22.32	0.337	8.56	E、X、G、S	EU、IU	NC46
4 1/2	20.00	18.71	27.84	0.430	10.92	E、X、G、S	EU、IU	NC46
5	16.25	14.88	22.16	0.296	7.52	E、X、G、S	IU	NC50
5	19.50	17.95	26.70	0.362	9.19	E、X、G、S	IEU	NC50
5	25.60	24.05	35.80	0.500	12.7	E、X、G、S	IEU	NC50
5 1/2	21.90	19.83	29.52	0.361	9.17	E、X、G、S	IEU	5 1/2FH
5 1/2	24.70	22.56	33.57	0.415	10.54	E、X、G、S	IEU	5 1/2FH
6 5/8	25.20	22.21	33.04	0.330	8.38	E、X、G、S	IEU	5 1/2FH
6 5/8	27.72	24.24	36.06	0.362	9.19	E、X、G、S	IEU	5 1/2FH

■ Main Technical Parameters

Api Drill Pipe Specifications:

◆ Mechanical Properties

Steel Grade	Yield Strength				Tensile strength		Elongation	Impact AKV(J)
	Min		Max		Min		MIN	10*10
	psi	Mpa	psi	Mpa	psi	Mpa	%	(-20℃)
E75	75000	517	105000	724	100000	689	API 5DP	≥95
X97	95000	655	125000	862	105000	724		≥81
G105	105000	724	135000	931	115000	793		≥68
S135	135000	931	165000	1138	145000	1000		≥54

◆ Mechanical Properties for welding zone

Steel Grade	Min.Yield Strength σt Mpa	Min.Tensile Strength σb Mpa	Min.Elongation %	Min Impact AKV(J)
E75	517	689	13	≥30 10*10 20℃
X97	609	712
G105	655	724
S135	724	793