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  • Torich International Co.,Ltd--The Steel Tube Maker

  •  [Zhejiang,China]
  • Business Type:Distributor/Wholesaler , Manufacturer , Service , Trade Company
  • Main Mark: Africa , Americas , Asia , Caribbean , East Europe , Europe , Middle East , North Europe , Oceania , Other Markets , West Europe , Worldwide
  • Exporter:31% - 40%
  • Certs:GB, ISO9001, ISO14001
  • Description:GB/T 9808 Seamless Steel Tubes,Drilling Steel Pipes,Drilling Seamless Steel Pipe
Torich International Co.,Ltd--The Steel Tube Maker GB/T 9808 Seamless Steel Tubes,Drilling Steel Pipes,Drilling Seamless Steel Pipe
Home > Products > Drilling Steel Pipes > GB/T 9808 Drilling Seamless Steel Tubes

GB/T 9808 Drilling Seamless Steel Tubes

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    Payment Type: L/C,T/T,D/P,Paypal,Money Gram,Western Union
    Incoterm: FOB,CFR,CIF,FCA,CPT
    Min. Order: 1 Ton
    Delivery Time: 35 Days

Basic Info

Model No.: GB/T 9808

Type: Seamless

Certification: API, CE, BSI, UL

Application: Drill Pipe

Section Shape: Round

Surface Treatment: Oiled

Usage: Oil&Gas Well Drilling, Mining, Oil Drill Mineral Mining

Technique: Cold Drawn

Material: Carbon Steel, ZT380,490,520,540,590,640,740

Name: GB/T 9808 Drilling Seamless Steel Tubes

Shape: Round

Outer Diameter: 6 - 420 Mm

Thickness: 0.5 - 50 Mm

Length: 4000-12500mm

Place Of Origin: Zhejiang, China (Mainland)

Additional Info

Packaging: packing in wooden boxes or hexagonal bundles with seaworthy packing

Productivity: 20000 Tons per Year

Brand: Torich

Transportation: Ocean,Land,Air

Place of Origin: Zhejiang, China (Mainland)

Supply Ability: 60000 Ton per year

Certificate: ISO9001:2008 ISO14001:2008, TS16949, CE PED, TUV, API

HS Code: 7304192000

Port: Shanghai,Ningbo,Wengzhou

Product Description

Product Item: Drilling Steel Pipes

Product Name: GB/T 9808 Alloy Steel Grade Oil Drill Mineral Mining Seamless Steel Tubes

Size range: O.D.:6-420mm W.T.:0.5-50mm L:4000-12500mm according to customers' actual application and production.

Application : For Geological Drill underground for Oil and Mineral,Mining Drilling Pipe for Mining Exploration,for Wire Line Drill Rod, Casing Tube, Core Barrel Tubes, Couplings,Oil Drill Pipe, Drilling Steel Pipes

Steel Grade: ZT380,ZT490,ZT520,ZT540,ZT590,ZT640,ZT740

Heat treatment: Normalized, Q+T


Material: 37SiMn 38CrMoAl 30CrMnSi(A)

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.


Internal Path Rod Test


Diameter of the Path Rod

Length of the Path Rod(mm)

d-1.0

300

d=D(diameter of the tube)-2S(wall thickness of the tube)



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



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
~

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


Pl5638370 5 420mm Diameter Seamless Drill Steel Pipe With Jis G 3465 Stmc C 540 Stmc C 640


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Product Categories : Drilling Steel Pipes

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  • GB/T 9808 Drilling Seamless Steel Tubes
  • GB/T 9808 Drilling Seamless Steel Tubes
  • GB/T 9808 Drilling Seamless Steel Tubes
  • GB/T 9808 Drilling Seamless Steel Tubes
  • GB/T 9808 Drilling Seamless Steel Tubes
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