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GB/T9808 STM-R780 High Straightness Seamless Cold Drawn Steel Tube For Drilling

Name: GB/T9808 STM-R780 High Straightness Seamless Cold Drawn Steel Tube For Drilling
Brand: TORICH INTERNATIONAL LIMITED
SKU: GB/T9808
Price: 2,550.00 USD
Availability: InStock

Brand Name:	TORICH
Model Number:	GB/T9808
MOQ:	2 tons
Price:	negotiable
Payment Terms:	L/C, D/A, D/P, T/T, Western Union, MoneyGram,
Supply Ability:	20000 Tons per Year

Detail Information

Product Description

Detail Information

Place of Origin:

China

Certification:

ISO14001:2008, TS16949, CE PED, TUV, API,BV

Product Name:

GB/T9808 STM-R780 High Straightness Seamless Steel Tubes For Drilling

Material:

ZT380 ZT490 ZT520 ZT540 ZT590 ZT640 ZT740

Type:

Seamless Steel Tube

Surface:

Oiled

Usage:

Drilling

Length:

4-12.5m

OD:

33-340mm

WT:

2-28mm

Shape:

Round

Packaging Details:

in wooden boxes or in hexagonal bundles

Supply Ability:

20000 Tons per Year

Highlight:

precision stainless steel tubing

seamless carbon steel tube

Product Description

GB/T9808 STM-R780 High Straightness Seamless Steel Tubes for Drilling

our products apply to geological core drilling,water well drilling,hydrogeoligical drill,casing material for engineering drilling,core tube material and casing coupling Seamless Steel Tubes,ordinary drill pipe material and drill pipe joint Seamless Steel Tubes,rope coring drill pipe material and drill pipe joint Seammless Steel Tubes,drill collar material and drill collar lock joint Seamless Steel Tubes.

Size:

OD:33-340mm WT:2-28mm L:4000mm-12500mm

Steel Grade:

ZT380,ZT490,ZT520,ZT540,ZT590,ZT640,ZT740

The Production method:

Hot rolling(extrusion) or cold drawing(rolling) seamless method.

Delivery State:

Hot rolling(extrusion)steel tubes should be delivered with hot rolling condition or hot finished.Cold drawn(rolling) steel tubes should be delivered with hot finished.

Surface quality

There is no visual visible cracks,rolling, folding,scarring and abscission layer in the internal and external surfaces of the steel pipe.

Test:

Tensile tast

Ultrasonic inspection

Eddy current inspection

Magnetic flux leakage inspection

Tolerance of Outer Diameter and Wall Thickness

Standard	Production Method	Tube Size		Tolerance
GB/T 9808-2008	Hot rolled	OD		(+1.0%D) or +0.65 (-0.5%D) -0.35
		WT	≤10	(+15%S)or +0.45 (-10%S) -0.35
		WT	>10	(+12.5%S, -10%S)
	Cold Drawn(rolled)	OD		±0.50%D or ±0.20
	Cold Drawn(rolled)	WT		±8%S or ±0.15
Q(N)/ T118-2010	Cold Drawn	OD	OD	±0.40%D or ±0.20
Q(N)/ T118-2010	Cold Drawn	WT	WT	±7%S or ±0.15

Mechanical Property

No.	Grade	Tensile Strangth Rm/MPa	Specifies the non-proportional extension strength Rp0.2/MPa	Percentage elongation after fracture A/%
No.	Grade	No less than
1	ZT380	640	380	14
2	ZT490	690	490	12
3	ZT520	780	520^a	15^b
4	ZT540	740	540	12
5	ZT590	770	590	12
6	ZT640	790	640	12
7	ZT740	840	740	10
^a Grade ZT520 measure R_P0.5 ^bGrade ZT520 use tensile sample S4 S5 or S6 in GB/T 228

Application:

Tags:

Precision Steel Tube

Seamless Steel Tube

Stainless Steel Tube

Welded Steel Tube

DOM Steel Tube

Heavy Wall Steel Tubing

Special Steel Pipe

Alloy Steel Pipe

Automotive Steel Tubes

CNC Machining Parts

Heat Exchanger Tubes

U Bend Tube

Drill Steel Pipe

Hydraulic Cylinder Tube

Nickel Alloy Tube

Structural Steel Pipe

Precision Steel Tube

Seamless Steel Tube

Stainless Steel Tube

Welded Steel Tube

DOM Steel Tube

Heavy Wall Steel Tubing

Special Steel Pipe

Alloy Steel Pipe

Automotive Steel Tubes

CNC Machining Parts

Heat Exchanger Tubes

U Bend Tube

Drill Steel Pipe

Hydraulic Cylinder Tube

Nickel Alloy Tube

Structural Steel Pipe

products details

GB/T9808 STM-R780 High Straightness Seamless Cold Drawn Steel Tube For Drilling

GB/T9808 STM-R780 High Straightness Seamless Cold Drawn Steel Tube For Drilling

precision stainless steel tubing

seamless carbon steel tube