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Home ProductsSeamless Steel TubeSeamless Straightness Steel Tubes for Drilling GB/T 9808 37SiMn 38CrMoAl
Seamless Straightness Steel Tubes for Drilling GB/T 9808 37SiMn 38CrMoAl
Seamless Straightness Steel Tubes for Drilling GB/T 9808 37SiMn 38CrMoAl Seamless Straightness Steel Tubes for Drilling GB/T 9808 37SiMn 38CrMoAl Seamless Straightness Steel Tubes for Drilling GB/T 9808 37SiMn 38CrMoAl Seamless Straightness Steel Tubes for Drilling GB/T 9808 37SiMn 38CrMoAl
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Seamless Straightness Steel Tubes for Drilling GB/T 9808 37SiMn 38CrMoAl

Minimum Order Quantity : 5 Ton Price : negotiable
Packaging Details : Packing in wooden box，hexagonal bundles or other seaworthy ways. Delivery Time : 30 days
Payment Terms : L/C, D/A, D/P, T/T, Western Union, MoneyGram Supply Ability : 40000 Ton/Year
Place of Origin: Zhejiang China Brand Name: TORICH
Certification: ISO 9001 ISO 14001 TS 16949 Model Number: GB/T 9808

Detail Information
Product Name: Good Straightness Seamless Steel Tubes For Drilling GB/T 9808 37SiMn 38CrMoAl Material: 37SiMn 38CrMoAl
Surface: With Anti Rust Protection Application: For Geological Drill Underground For Oil And Mineral, For Mining
Shape: Round OD: 6-95mm
WT: 1-10mm Length: 4-12.5m
High Light:

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Product Description

Good Straightness Seamless Steel Tubes for Drilling GB/T 9808 37SiMn 38CrMoAl
 
Spec:
Material:37SiMn 38CrMoAl
Size Range:OD:6-95mm
                    WT:1-10mm
                    General Length:4-12m

 
Chemical Compositon

CHEMICAL COMPOSITION % max
PS
0.0300.030
 

Tolerance of Outer Diameter and Wall Thickness

StandardProduction MethodTube Size Tolerance
GB/T 9808-2008Hot rolledOD(+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)/ T118-2010Cold DrawnODOD±0.40%D or ±0.20
WTWT±7%S or ±0.15

 
Bending Degree

Nominal Wall Thickness/mmBending 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 RodLength of the Path Rod(mm)
d-1.0300
d=D(diameter of the tube)-2S(wall thickness of the tube)

 

 
Mechanical Property
No.GradeTensile Strangth Rm/MPaSpecifies the non-proportional extension strength Rp0.2/MPa

Percentage elongation after fracture
A/%

No less than
1ZT38064038014
2ZT49069049012
3ZT520780520a15b
4ZT54074054012
5ZT59077059012
6ZT64079064012
7ZT74084074010

a Grade ZT520 measure RP0.5
bGrade ZT520 use tensile sample S4 S5 or S6 in GB/T 228

 
Testing items and sampling quantity for steel tubes

Serial numberTesting itemSampling quantity
1Chemical composition1 sample from each furnace
2Tensile test1 sample from each batch
3Ultrasonic examinationAll
4Eddy current testAll
5Magnetic flux leakage testAll
 

 
Grade comparison table

This standardJIS G 3465-2006Related industry standard
ZT380—DZ240
ZT490—DZ250
ZT520STM-R780—
ZT540—DZ255
ZT590—DZ260
ZT640—DZ265
ZT740—DZ275

 

 

Mining Tubes with Alloy :For Geological Drill underground for Oil and mineral, for mining

 

 

Our Advantage:

Professional steel tube maker

Superior quality and Competitive Price

First-class production technology and Double quality control

Fast delivery and Best services

Tag:

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