products

GB/T 9808-2008 Seamless Steel Pipe for Geological Drill and Mining Tubing

Basic Information
Place of Origin: ZheJiang,CHINA
Brand Name: TORICH
Certification: ISO
Model Number: GB/T 9808-2008
Minimum Order Quantity: 1 Tons
Packaging Details: In bundles or in wooden boxes packaging.as per clients' options.
Delivery Time: 30-35days
Payment Terms: L/C, D/A, D/P, Western Union, T/T, MoneyGram
Supply Ability: 60000 Tons/Year
Detail Information
Model Number: GB/T 9808 -2008 Technique: Cold Drawn
Surface: Oiled Material: ZT380,490,520,540,590,640,740
Usage: Oil Drill Mineral Mining OD: 6-420mm
WT: 0.5-50mm Length: 4000-12500mm
Steel Grade: ZT380,ZT490,ZT520,ZT540,ZT590,ZT640,ZT740 Heat Treatment: Normalized, Q+T
High Light:

Geological Seamless Steel Tube

,

12500mm Seamless Steel Tube

,

Oiled Geological Steel Tube


Product Description

GB/T 9808-2008 Seamless Steel Pipe for Geological Drill and Mining Tubing

 

Product Description:

This standard specifies the drilling seamless code, ordering content, dimensions, Weight, , technical requirements, test methods, marking and quality certification, packaging, appearance inspection rules. This standard applies to the geological core drilling, well drilling, hydrogeological drilling, engineering drilling casing material, core tube materials and materials with seamless steel casing collar, ordinary drill pipe tool joints feed materials and seamless steel pipes, steel particles Drill material seamless steel pipe, rope coring drill pipe tool joints feed materials and seamless steel pipes, drill collars, drill collar lock connector feed materials and seamless steel pipes.

 

Chemical Compositon

CHEMICAL COMPOSITION % max
P S
0.030 0.030

 

Bending Degree

Nominal Wall Thickness/mm Bending Degree/(mm/m)
≤15 ≤1.5
>15 ≤2.0

The bending degree of the wire-line drill rod is not larger than 1.0 mm per meter.

 

 

Tolerance

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

 

 

Chemical composition

Stee Grade C Si Mn P max S max Cu max Cr Mo B
T600
(45MnMoB)
0.43-0.48 0.17-0.37 1.05-1.35 0.02 0.015 0.20 ~ 0.20-0.25 0.001-
0.005
T750
(30CrMnSiA)
0.28-0.34 0.90-1.20 0.80-1.10 0.02 0.015 0.20 0.8-1.1 ~ ~
T850
4140
0.38-0.43 0.17-0.35 0.70-0.90 0.02 0.015 0.20 0.9-1.1 0.15-
0.25
~

 

 

Testing items and sampling quantity for steel tube

Serial number Testing item Sampling quantity
1 Chemical composition 1 sample from each furnace
2 Tensile test 1 sample from each batch
3 Ultrasonic examination All
4 Eddy current test All
5 Magnetic flux leakage test All

 

 

Grade comparison table

This standard JIS G 3465-2006 Related industry standard
ZT380 DZ240
ZT490 DZ250
ZT520 STM-R780
ZT540 DZ255
ZT590 DZ260
ZT640 DZ265
ZT740 DZ275

 

Mechanical Properties:

Steel Tensile Strength Mpa Yield Point Mpa Elongation % Heat treatment
Grade min
ZT380 640 380 14 Normlized
ZT490 690 490 12 Normlized
ZT540 740 590 12 Normlized
ZT590 770 590 12 Normlized
ZT640 790 640 12 QT
ZT740 840 740 10 QT
T850 950 850 15 QT

 

Product Picture:

GB/T 9808-2008 Seamless Steel Pipe for Geological Drill and Mining Tubing 0

 

GB/T 9808-2008 Seamless Steel Pipe for Geological Drill and Mining Tubing 1

 

Package and Delivery:

 

ASTM A213  Seamless Ferritic and Austenitic Alloy-Steel Boiler, Super heater, and Heat-Exchanger Tubes 3

 

 

FAQ:

Q: Are you trading company or manufacturer ?

A: A professional steel pipes materials inventor, manufacturer and solution provider

Q: How long is your delivery time?

A: Generally it is 7-14 days if the goods are in stock. or it is 30-60 days if the goods are not in stock, it is according to quantity.

Q: Do you provide samples ? is it free or extra ?

A: Yes, we could offer the sample for free charge but need pay the cost of freight.

Q: What is your terms of payment ?

A: Payment<=1000USD, 100% in advance. Payment>=1000USD, 30% T/T in advance ,balance before shippment.
If you have another question, pls feel free to contact us.

 

GB/T 9808 -2008 Seamless Steel Pipe for Geological Drill and Mining Tubing

 

 

 

Contact Details
Daise Wang

Phone Number : +8618069049202

WhatsApp : +8613736164628