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Model No.: GB/T9808
Brand: TORICH
Type: Seamless Steel Tube
Certification: UL
Application: Drill Pipe
Section Shape: Round
Surface Treatment: Oiled
Usage: Drilling
Technique: Cold Drawn
Material: 37SiMn 38CrMoAl 30CrMnSi 30CrMnSiA
Shape: Round
Length: 4-12.5m
Product Name: GB/T9808 High Straightness Seamless Steel Tubes For Drilling
OD: 33-340mm
WT: 2-28mm
Packaging: in wooden boxes or in hexagonal bundles
Productivity: 6000 Tons per Month
Transportation: Ocean,Land,Air
Place of Origin: China
Supply Ability: 6000 Tons per Month
Certificate: ISO14001:2008, TS16949, CE PED, TUV, API,BV
HS Code: 7306900090
Port: Ningbo,Shanghai
Payment Type: L/C,T/T,D/P,Paypal,Money Gram,Western Union
Incoterm: FOB,CFR,CIF,FCA,CPT
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 | |
WT | ≤10 | (+15%S)or +0.45 | ||
>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:
Product Categories : Seamless Steel Tubes
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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.