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GB/T 9808-2008 Seamless Steel Pipe

Packaging Details : In wooden boxes or hexagonal bundles in seaworthy packing Delivery Time : 35-45days
Payment Terms : L/C, D/A, D/P, T/T, Western Union, MoneyGram
Place of Origin: CHINA Brand Name: TORICH
Model Number: DIN2393

Detail Information

Product Name: GB/T 9808-2008 Seamless Steel Pipe Model No: GB/T 9808
Technique: Cold Drawn Surface Treatment: Oiled
Type: Stainless Material: Carbon Steel
Section Shape: Square Application: Oil Pipe, Gas Pipe, Hydraulic Pipe, Shock Absorber

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

 

 

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
~

 

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

 

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 Pictures:

GB/T 9808-2008 Seamless Steel Pipe 0

 

GB/T 9808-2008 Seamless Steel Pipe 1

 

Company Introduction:

GB/T 9808-2008 Seamless Steel Pipe 2

 

FAQ:

Q: Are you trading company or manufacturer?

A: We are a professional steel pipes materials manufacturer.

 

Q: How long is your delivery time?

A: Generally it takes 7-14 days if the goods are in stock or 30-60 days if there is no stock, this mainly depends on quantity.

 

Q: Do you provide free sampleas?

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.

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