Home > Products > Drilling Steel Pipes > GB/T 9808 Drilling Seamless Steel Tubes

GB/T 9808 Drilling Seamless Steel Tubes

Payment Type:
L/C,T/T,D/P,Paypal,Money Gram,Western Union
Incoterm:
FOB,CFR,CIF,FCA,CPT
Min. Order:
1 Ton
Transportation:
Ocean,Land,Air
Port:
Shanghai,Ningbo,Wengzhou
Share:
Chat Now
  • Product Description
Overview
Product Attributes

Model No.GB/T 9808

BrandTorich

TypeSeamless

CertificationUL

ApplicationDrill Pipe

Section ShapeRound

Surface TreatmentOiled

UsageOil Drill Mineral Mining

TechniqueCold Drawn

MaterialZT380,490,520,540,590,640,740

Place Of OriginZhejiang, China (Mainland)

ShapeRound

Thickness0.5 - 50 Mm

NameGB/T 9808 Drilling Seamless Steel Tubes

Outer Diameter6 - 420 Mm

Length4000-12500mm

Supply Ability & Additional Information

Packagingpacking in wooden boxes or hexagonal bundles with seaworthy packing

Productivity20000 Tons per Year

TransportationOcean,Land,Air

Place of OriginZhejiang, China (Mainland)

Supply Ability60000 Ton per year

CertificateISO9001:2008 ISO14001:2008, TS16949, CE PED, TUV, API

HS Code7304192000

PortShanghai,Ningbo,Wengzhou

Payment TypeL/C,T/T,D/P,Paypal,Money Gram,Western Union

IncotermFOB,CFR,CIF,FCA,CPT

Packaging & Delivery
Selling Units:
Ton
Package Type:
packing in wooden boxes or hexagonal bundles with seaworthy packing

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


Product Categories : Drilling Steel Pipes

Home > Products > Drilling Steel Pipes > GB/T 9808 Drilling Seamless Steel Tubes
Email to this supplier
  • *Subject:
  • *To:
    Mr. Richard SHEN
  • *Email:
  • *Message:
    Your message must be between 20-8000 characters
Send Inquiry
*
*

Related Products List

Home

Product

Whatsapp

About Us

Inquiry

We will contact you immediately

Fill in more information so that we can get in touch with you faster

Privacy statement: Your privacy is very important to Us. Our company promises not to disclose your personal information to any external company with out your explicit permission.

Send