Cold Drawn Alloy Steel Seamless Drill Pipe High Hardness For Geological Drilling

Price Negotiable

Price: Negotiation

MOQ: 500kg

Delivery Time: 45 days

Brand: New-Era

Product Description

Seamless cold drawn alloy steel pipes for wire-line drill rods sizes AQ BQ NQ HQ PQ SQ by SAE/AISI4130 steel tubes

Technical Parameters:

No.	Std.Sizes	Lengths (m)	OD*WT (mm)	Steel Grade	Depth(m)
1	AQ(AWL)	1.5	44.5*4.8	4130+QT/SR	300
2	AQ(AWL)	3	44.5*4.8	4130+QT/SR	300
3	BQ (BWL)	1.5	55.6*4.8	4130+QT/SR	600
4	BQ (BWL)	3	55.6*4.8	4130+QT/SR	1200
5	NQ (NWL)	1.5	69.9*5.0	4130+QT/SR	600
6	NQ (NWL)	3	69.9*5.0	4130+QT/SR	1200
7	HQ (HWL)	1.5	88.9*5.6	4130+QT/SR	600
8	HQ (HWL)	3	89.9*5.6	4130+QT/SR	1200
9	PQ (PWL)	1.5	114.3*6.3	4130+QT/SR	600
10	PQ (PWL)	3	114.3*6.3	4130+QT/SR	1200
11	SQ	1.5	139.7*7.1	4130+QT/SR	300
12	SQ	3	139.7*7.1	4130+QT/SR	600

Description:

COLD DRAWN SEAMLESS ALLOY STEEL TUBES

STEEL GRADE: SAE/AISI4130

SPECIFICATIONS: ASTM A519 WITH FOLLOWING REQUIREMENTS.

MECHANICAL PROPERTIES

Tensile Min	725MPa
Yield Min	620MPa
Elongation (50.8mmG.L)	Min 15%
Hardness	230-280 HB
Condition	Stress relieved.
Straightness better than:	1 in 2000 MAX (1MM DEVIATION IN 2000MM)
Eccentricity (Max)	5%
Grain size	≥ 9 according to ASTM E112
Residual Hoop stress	<80Mpa according to ASTM E1928-99

DIMENSION AND TOLERANCES (IN MM)

SR.NO.	OUTSIDE DIA	TOLERANCE	INSIDE DIA	TOLERANCE	WT	LENGTH (+5/-0)
1	55.56	+0.18/-0	46.20	+0/-0.18	4.68	3070
2	69.85	+0.20/-0	60.32	+0/-0.20	4.765	3070
3	88.90	+0.25/-0	78.00	+0/-0.25	5.45	3070

NON-DESTRUCTIVE TEST

Eddy Current Examination according to ASTM E309shall be applied on all tubes using External Longitudinal notch with depth of no more than 7.5% of wall thickness (maximum notch depth 0.80mm and minimum notch depth 0.30mm) , 0.30mm maximum width and 25mm maximum length, made from the same chemistry and size of tubing.

SURFACE CONDITION

The tubes must have smooth surface

Tag: steel drill rod,rock drill rods,wireline drill rods,casing drill pipes,seamless steel pipes,rock drill pipes,4130+SR