drill pipe

Product

Oil well pipe

oil pipeline oil casing pipe drill pipe slotted tube Oil Casing Coupling

air cylinder tube

stainless steel cylinder tube aluminium cylinder tube Pneumatic cylinder tube Large bore cylinder

carbon steel coil

honing pipe

honed cylinder tube seamless honed tubes honed tubing Ready To Honed Tube

steel plate

wear-resistant steel plate High-strength steel plate Tread plate carbon steel sheet/plate Spring steel plate Container steel plate Shipbuilding steel plate Boiler steel plate

alloy

Alloy steel plate Monel Hastelloy Nickel alloy copper Rebar

Stainless steel

stainless steel plate stainless steel coil stainless steel pipe Stainless steel profiles Stainless Steel Composite Panel

Steel Pipe

industrial pipe seamless steel pipe Boiler steel pipe Precision Steel Pipe

hydraulic steel pipe

hydraulic seamless pipe stainless steel hydraulic pipe Hydraulic Oil Pipe Hydraulic Cylinder Rod Hydraulic Cylinder Barrel Hoist Cylinders

Drilling Pipe Classification

After a spherometer check, drill pipes are classified in one of three categories:

1、N-class pipe, or new pipe.

The strongest, newest pipe available. Usually in pristine (or close to it) condition.

2、P-class pipe, or premium pipe.

A step-down from N-class pipe, premium pipe have endured some wear, but can still function very capably.

3、C-class pipe

C-class pipe, of which there are three classes (C-1, C-2, and C-3). Depending on their rating, C-class pipes are either well-worn pipes, or nearing the end of their useful lives.

After a pipe has reached the end of its useful service life, they will be graded for scrap, denoted with the application of red bands. Because of the high cost of drill pipes, remember that they are often reused, with many companies selling both new and used pipes (graded according to the criteria mentioned above) often until the very end.

Features of Carbon steel drill pipe coupling

Features of Carbon steel drill pipe coupling:

1、Reliability
The piston of DTH Hammer uses the special (imported) high nickel alloy steel, with advanced heat treatment as military industry standard.
Strengthening processing on hammer surface for higher were-resistance.
2、Suitability
Specially designed drill bits for middle soft and hard rock formations. Easily disassembly thread for easy maintenance.
3、 Efficiency
Extra-short structure design DTH hammer and bit for great efficiency of high impact energy transmission, with high impact power and fast drilling rate.

Drilling pipe chemical composition

Steel Grade	Mass fraction, % based on heat and product analyses a,g
	C	Mn	P	S	V	Nb	Ti
	max b	max b	max	max	max	max	max
Seamless Pipe
A	0.22	0.9	0.3	0.3	–	–	–
B	0.28	1.2	0.3	0.3	c,d	c,d	d
X42	0.28	1.3	0.3	0.3	d	d	d
X46	0.28	1.4	0.3	0.3	d	d	d
X52	0.28	1.4	0.3	0.3	d	d	d
X56	0.28	1.4	0.3	0.3	d	d	d
X60	0.28 e	1.40 e	0.3	0.3	f	f	f
X65	0.28 e	1.40 e	0.3	0.3	f	f	f
X70	0.28 e	1.40 e	0.3	0.3	f	f	f
Welded Pipe
A	0.22	0.9	0.3	0.3	–	–	–
B	0.26	1.2	0.3	0.3	c,d	c,d	d
X42	0.26	1.3	0.3	0.3	d	d	d
X46	0.26	1.4	0.3	0.3	d	d	d
X52	0.26	1.4	0.3	0.3	d	d	d
X56	0.26	1.4	0.3	0.3	d	d	d
X60	0.26 e	1.40 e	0.3	0.3	f	f	f
X65	0.26 e	1.45 e	0.3	0.3	f	f	f
X70	0.26e	1.65 e	0.3	0.3	f	f	f

Drilling pipe mechanical property

Pipe Grade	Tensile Properties – Pipe Body of SMLS and Welded Pipes PSL 1			Seam of Welded Pipe
	Yield Strength a	Tensile Strength a	Elongation	Tensile Strength b
	Rt0,5 PSI Min	Rm PSI Min	(in 2in Af % min)	Rm PSI Min
A	30,500	48,600	c	48,600
B	35,500	60,200	c	60,200
X42	42,100	60,200	c	60,200
X46	46,400	63,100	c	63,100
X52	52,200	66,700	c	66,700
X56	56,600	71,100	c	71,100
X60	60,200	75,400	c	75,400
X65	65,300	77,500	c	77,500
X70	70,300	82,700	c	82,700

Drilling Pipe Specification

89Type drill pipe(Double buckle)
Diameter(mm)	Length(mm)	Thread model	Weight(kg)	Remarks
89	1500	API 2 3/8" IF	28	Nitrogen treatment Jumping-up
89	2000	API 2 3/8" IF	34
89	3000	API 2 3/8" IF	46
89	6000	API 2 3/8" IF	88

102Type drill pipe(Single buckle)
Diameter(mm)	Length(mm)	Thread model	Weight(kg)	Remarks
102	1500	API 2 7/8" IF	37	Nitrogen treatment Jumping-up
102	2000	API 2 7/8" IF	46
102	3000	API 2 7/8" IF	64
102	6000	API 2 7/8" IF	118

102Type drill pipe(Double buckle)
Diameter(mm)	Length(mm)	Thread model	Weight(kg)	Remarks
102	1500	API 2 7/8" IF	38	Nitrogen treatment Jumping-up
102	2000	API 2 7/8" IF	47
102	3000	API 2 7/8" IF	65
102	6000	API 2 7/8" IF	119

Application

Our steel products are mainly used in chemical industry, petrochemical industry, offshore, seawater pipeline, desalination plant, nuclear engineering, paper and pulp industry.

Oil and GasKuwait is a country of petroleum resources with abundant, oil factory also is very broad, respectively, the oil plant are mainly used for refining oil and oil processing.

MarineSubmarine pipelines carry such things as domestic water, waste water, electrical lines, gas lines, communication lines, and outfall or intake systems.

ConstructionBridge materials with high strength, low cost for selecting the main basis, give priority to with development of the traditional steel and concrete.

EnergyEngineering is mainly aiming at the water pollution and solid waste pollution. using the steel pipe to filtrate in order to improve the quality of water.