Home > Products > Seamless Steel Tubes > GB/T9808 High Straightness Seamless Steel Tubes for Drilling

GB/T9808 High Straightness Seamless Steel Tubes for Drilling

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

Model No.GB/T9808

BrandTORICH

TypeSeamless Steel Tube

CertificationUL

ApplicationDrill Pipe

Section ShapeRound

Surface TreatmentOiled

UsageDrilling

TechniqueCold Drawn

Material37SiMn 38CrMoAl 30CrMnSi 30CrMnSiA

ShapeRound

Length4-12.5m

Product NameGB/T9808 High Straightness Seamless Steel Tubes For Drilling

OD33-340mm

WT2-28mm

Supply Ability & Additional Information

Packagingin wooden boxes or in hexagonal bundles

Productivity6000 Tons per Month

TransportationOcean,Land,Air

Place of OriginChina

Supply Ability6000 Tons per Month

CertificateISO14001:2008, TS16949, CE PED, TUV, API,BV

HS Code7306900090

PortNingbo,Shanghai

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

IncotermFOB,CFR,CIF,FCA,CPT

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

GB/T9808 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.

 We are manufacturer of Seamless Steel Tubes in China, if you want to buy Seamless Carbon Steel Tube, Oil Cylinder Steel Tube, Precision Seamless Steel Tube, Hydraulic Cylinder Steel Tube, please contact us.

 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

>10

(+12.5%S, -10%S)

Cold Drawn(rolled)

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

                                                      Mechanical Property

No.

Grade

Tensile Strangth  Rm/MPa

Specifies the non-proportional extension strength                  Rp0.2/MPa

Percentage elongation after fracture

A/%

No less than

1

ZT380

640

380

14

2

ZT490

690

490

12

3

ZT520

780

520a

15b

4

ZT540

740

540

12

5

ZT590

770

590

12

6

ZT640

790

640

12

7

ZT740

840

740

10

a Grade ZT520 measure RP0.5

bGrade ZT520 use tensile sample S4 S5 or S6 in GB/T 228

 

Application:

Seamless Steel Tubes,Seamless Carbon Steel Tube,Oil Cylinder Steel Tube,Precision Seamless Steel Tube,Hydraulic Cylinder Steel TubeSeamless Steel Tubes,Seamless Carbon Steel Tube,Oil Cylinder Steel Tube,Precision Seamless Steel Tube,Hydraulic Cylinder Steel Tube


Product Categories : Seamless Steel Tubes

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