Product Description
Seamless Steel Pipe/Tube:Seamless steel pipe is a type of steel pipe made of a single piece of metal with no joints on the surface. The production methods of this type of steel pipe include hot rolling, cold rolling, cold drawing, extrusion, and pipe jacking. According to the different cross-sectional shapes, seamless steel pipes can be divided into two types: circular and irregular, among which irregular pipes include various complex shapes such as square, elliptical, triangular, hexagonal, etc.
The diameter of seamless steel pipes can vary from 650 millimeters to several millimeters, or even smaller, while the wall thickness can range from thick walled pipes to thin-walled pipes. They are widely used in multiple fields, such as conveying fluids, structural components, boilers, chemicals, electricity, petroleum, and automotive manufacturing. In addition, seamless steel pipes are also commonly used to manufacture high-pressure, high-strength mechanical structures.
Product Parameters
| Seamless Steel Pipe/Tube |
| Main Produdion Category |
Seamless Steel Tube/Pipe, Cold Drawn Steel Bar, Precision Welded Pipe, Rebar Coupler, Steel Pipe Further Processing |
| Production Range |
Outer Diameter: 10-120mm (0.39 inch - 4.72 inch) |
| Wall Thickness: 1-20mm (0.039 inch - 0.79 inch) |
| Tolerance |
Tolerance ±0.10mm, Superior products ±0.05mm, Can be customized according to customer's requirements |
| Technique |
Cold Drawn / Cold Rolled |
| Finished Product Condition |
BK, BKS, +C, +LC, +SR, +A, +N |
| Shape |
Round or Special shapes |
| Raw Material Brand |
Baosteel, Xingcheng, Shagang, Tenith, Jiyuan and other manufacturers |
| Main Standards |
ASTM A519, A530, A179, A192 |
| DIN10297-1, DIN17121, DIN1629, DIN2391, EN10305, EN10087, BS970 |
| JISG3441, JISG3444, JISG3445, JISG4804 |
| GOST8733, GOST8734, GOST8645,GOST8639, GOST1414 |
| Further Processing for Steel Tubes |
Heat treatment (Quenching and Tempering), Cutting, Chamfer, Threading, Inner diameter or Outer Diameter Lathe, Surface Shot
Blasting, Laser Marking |
| Featured Products |
Free Cutting Steel Tube, Precision Tube, Special Shaped Steel Tubes, Alloy Pipe, Small-Diameter Thick-Wall Steel Tube |
| Material / Grade |
| Carbon Steel |
GB/T 8162 & 8163 & 3639: 10#, 20#, 35#, 45#, 55#, Q235B, Q235C, CF53, A105 |
| ASTM A519: 1010, 1020, 1026, 1035, 1045, 1050 |
| DIN17121/EN 10297-1, DIN1629/DIN2391/EN 10305-1: C10/CK10, C22/CK22, C35/CK35, C45/CK45, CF53 |
| JIS3441/JIS3444/JIS3445: SCM432/SCRRM3, SCM4 |
| JIS G4053: JIS SCr420, JIS SCr440, SCM415, SCM420 |
| Alloy Steel |
GB/T 8162 & 8163 & 3639: 16Mn(Q345B), 20Cr, 40Cr, 15CrMo, 20CrMo, 28CrMo, 30CrMo, 35CrMo, 42CrMo, 20CrMnTi, 40MnMoV, 20Mn2, ZF6,
16MnCr5, 20MnCr5, 38Mn2V, 09CrCuSb(ND) |
| ASTM A519: 5120, 5140, 4130, 4135, 4140 |
| DIN17121/EN 10297-1, DIN1629/DIN2391/EN 10305-1: ST52, EN10084-1998 20Cr4, 41Cr4, 15CrMo4, 25CrMo4, 35CrMo4, 42CrMo4, 16MnCr5 |
| JIS3441/JIS3444/JIS3445: SCM432/SCRRM3, SCM4 |
| JIS G4053: JIS SCr420, JIS SCr440, SCM415, SCM420 |
| Free Cutting Steel |
GB/T 8731: Y15, Y15Pb |
| ASTM A519: 1213, 1215, 1144, 12L14 |
| DIN/EN 10087: 11SMn30(1.0715), 11SMn37(1.0736) |
| BS970: EN1A |
Our Advantages
·Precise custom outer diameter and inner diameter
·Tight tolerances, resulting in reduced machine time / dimensional accuracy
·Smooth and Clean OD and ID surfaces
·Small batch, high quality customization
·Excellent machining characteristics
·Wider range of physical properties attainable through process and annealing
Our Products
Seamless Steel Tube(Cold Drawn), Seamless Steel Tube(Cold Rolled), Cold Drawn Steel Bar(Round&Other Shapes Can Be Customized), Precision Welded Tube.
The outer diameter and inner diameter are precisely customized with a tolerance of ±0.10mm and an optimal tolerance of ±0.05mm. It can be customized according to customer requirements.
Used in various fields such as auto parts, drilling, engineering machinery, machining,tunnel support, agricultural machinery parts, liquid conveyance, transmission, home appliances etc.
Production Process
Tenjan has a full-process production line.Delivery time and quality can be guaranteed.
| Inspection Process- Quality Assurance |
Standard Export Packaging, Suitable For Sea Transportation.
Company Profile
Changzhou Tenjan Steel Tube Co., Ltd., established in 2004, is a technology-based manufacturer integrating seamless steel tube design, R&D, and production. Tenjan has an annual production capacity of more than 60,000 tons. Chairman "Wensheng Gu ", adhering to "one life one thing", has been focusing on R&D of seamless steel tube for more than 30 years.
·Tenjan, fills the technology gap in both domestic and foreign markets
Tenjan has produced free cutting steel tube successfully through R&D, which fills the technology gap in both domestic and foreign markets.
·High-Precision customized machine, help customer improve production efficiency
Self-customized high-precision straightening machine has reached the domestic leading level. It effectively helps customers to improve the post-processing efficiency, reduce malfunction of equipment, and increase equipment lifespan.
·UT&NDT equipment, quality can be guaranteed before EX-FTY
Ultrasonic & eddy current flaw detection integrated machine, detects defects on the inner and outer surfaces of steel tubes and its accuracy can reach 0.02mm.
Certifications
FAQ
1.Q: What is the Minimum Order Quantity?
A: 5 tons/size.
2.Q: What are the Payment Terms?
A: L/C or T/T, 30% deposit, 70% balance against copy of BL.
3.Q: How long is the Delivery Time?
A: 30-50 days.
Starting from production around 30 days, which including perforation,
cycling pickling, cycling annealing, squeezing head, cold rolling, cold drawing,
straightening, ultrasonic & eddy current flaw detection, cutting head&tail, tensile test
and finished product inspection.
4.Q:Warranty of Rebar Coupler?
A: Any quality issues that do not comply with the contract before use of seamless
steel tubes, we accept the return of the refund.
Geprüfter Lieferant 
