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GB/T9808 STM-R780 High Straightness Seamless Cold Drawn Steel Tube For Drilling
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Brand Name:TORICH
Model Number:GB/T9808
Certification:ISO14001:2008, TS16949, CE PED, TUV, API,BV
Price:negotiable
Payment Terms:L/C, D/A, D/P, T/T, Western Union, MoneyGram,
Supply Ability:20000 Tons per Year
Delivery Time:30-45 Days
Company Data
Verified Supplier
Contact Person
Richard SHEN
Business Type:
Manufacturer Distributor/Wholesaler Importer Exporter Trading Company Seller
Officials:
Suite 1004, Hongan Plaza, #258 Die Yuan Road, Yinzhou District, Ningbo City, China
Quality:
Quality Certifitation Available
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Product Details
Company Profile
Product Details
GB/T9808 STM-R780 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.
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:
Company Profile
TORICH INTERNATIONAL LIMITED
Who We are ?
-------A professional steel pipes materials inventor, manufacturer
and solution provider
Torich International Limited is a professional manufacturer
and exporter of steel pipes materials. It is an international
marketing and sales company specialized in steel tubes, which holds
the factories of Seamless Steel Tubes with Carbon and Alloy Steel
Grade, Welded Precision Steel Tubes,DOM Steel Tubes, Seamless &
Welded Stainless Steel Tubes with Nickel and Alloy Steel Grade.
Our factory was established since 1997, with the name of TORICH
INTERNATIONAL LIMITED. The factories’ technicians are of great
engineering experience in steel pipe industry for more than 20
years, which are in great command of production technology for Cold
Drawing and Cold Rolling. So we have strong technician team and
manufacturing capability.
What products we do?
------- Invent and produce various Precision Steel Pipes
Our steel pipes cover the following ranges:
Seamless Precision Steel Pipes
Bearing Steel Tubes
Welded Precision Steel Pipes, with DOM production
Seamless Heat Exchanger Steel Pipe
Seamless Boiler Steel Pipes
Honed Tubes
Hydraulic Cylinder Steel Tubes
Hydraulic Telescopic Cylinder Tubes
Seamless Structural Steel Pipes
Seamless Mechanical Steel Pipes
Seamless Alloy Steel Tubes & Pipes
Seamless Stainless Steel tubes
Welded Stainless Steel Tubes
Seamless Stainless Steel Tubes & Pipes
Welded Stainless Steel Tubes & Pipes
Seamless Carbon Steel Tubes & Pipes
Nickel Alloy Steel Tubes & Pipes
What TORICH do:
1. Producing Steel Tubes
2. Selling both on Domestic and International Market
3. Precisely Targeting Customers’ Requirement- Sourcing the right
factory for right products for Customers
Products Application:
Oil Cylinders
Air Cylinder,
Automotive Cylinder Liners
Boilers, Pressure Vessels
Shell & Heat Exchangers
Jack Lifting
Telescopic Systems
Pneumatic Cylinders
Agricultural Machineries
Size range is:
O.D. 4-350mm,
W.T. 0.5-30mm,
Length: according to customer’s requirement and agreement
Steel Grade:
Carbon Steel Grade:
ST35.8, ST37.0, ST44, ST52;
E155, E195, E215, E235, E275, E355;
195GH, P235GH, P265GH, P195TR1, P195TR2, P235TR1, P235TR2, P265TR1,
P265TR2;
SAE1010, SAE1020, SAE1026, SAE1035, SAE1045;
Carbon steel tube: SA178, A179, A192, A210, SA213, SA214, etc.
Alloy Steel Grade:
T2, T5, T9, T11, T12, T17, T21, T22, T91,T92, 15Mo3,16Mo3,
13CrMo44;
SAE4130, SAE4140, 40Cr, 40Cr4, 10CrMo910, 12CrMo910, 11CrMo910,
25CrMo4, 35CrMo, 35CrMo4, 42CrMo4, 34CrMo4, 20MnV, 20MnV6,20CrMn;
Carbon steel tube: A179,A192,A210,DIN17175,etc.
Bearing Steel Grades:
GCr15 52100 suj2 suj3 100Cr6 SKF3S SKF3S 20CrNiMo 8620H 4118H;
Nickel Alloy Grade:
N02200/2201, N04400, N06600, N06601, N06625, N06852, N06219,
N06690, N08800/8810/8811, N08825, N08028, N08535, N08904, N08925,
N08926, N010276, N06022, etc.
Austenitic/Super Austenitic Stainless Steel Grade:
304/304L, 316/316L, 314, 321, 347H, 316Ti, 316LMod, 317L/N, 310S,
253MA, 330, 904L, S31254, XM-19, etc.
Ferrite/Martensite Stainless Steel Grade:
TP410, TP405, TP420, TP430, TP430Ti, TP403, TP409, TP444, TP439,
TP446, etc.
Duplex/Super Duplex Stainless Steel Grade:
S31803, S32304, S31500, S32550, S32750, S32760, etc.
Corporate Culture:
We focus on Quality First, Quality Traceability, and Quality
Stability!
We focus on Customer First, People First, and Quality-Oriented!
Success:
First factory started in 1997, in the name of Torich , now covers
50000 square meters of factory building, with more than
100employees, and over 45 million RBM assets.
In 2008, we started the company of Torich International
Limited for international business and marketing.
Welcome partners from all over the world for long term cooperation!
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