◆ Tenjan – 21 Years of Expertise in Custom Seamless Carbon Steel Pipes Integrated large-scale production from raw material customization to finished pipes, with full in-house quality control—no outsourcing. ◆ Diverse Material Options Low-carbon steel, me
Custom Sizes OD10-108mm – ASTM/EN/DIN/JIS/GOST Certified – Small-Batch Friendly
| Parameter | Key Features |
| Outer Diameter | 10-108mm (0.39″-4.25″) • Fully customizable |
| Wall Thickness | 1-20mm (0.039″-0.79″) • ±0.1mm precision tolerance |
| Material | Carbon Steel • Alloy Steel • Special grades available |
| Process | Cold Drawn & Cold Rolled for superior finish |
| Industry | Typical Grades We Supply |
| GB | DT4,Y15,10#,20#,20G,Q235,25Mn,35#,45#,55# |
| ASTM | 1215,1008,1010,1020,A105,A106 Gr.B,A36,1026,1035,1045,1055,SA179,SA192 |
| EN | DC01,11SMn30,P235TR1,P195GH,P265TR2,E235 |
| DIN | DC01,11SMn30,CK10,C10,ST35.8,C20,CK20, ST45.8,St37,S235JR,C26D,CK35,CK45,CK55 |
| JIS | SUM22,S10C,STKM11A,STPT370,STB35,S20C,STKM12, STKM13,STPT410,STB42,SS400,S35C,S45C,S55C |
| GOST | 08КП,10,20,Ст3сп,25,35,45,55 |
| Other Speical Grades can be customized | |
| Standard | Key Applications Parts | Relevant Standards | Our Advantages |
| Automotive and Motorcycle Component | Shock Absorbers,Steering Systems,Thrust Rods | EN 10305-1,JIS G3445, DIN 2391,ASTM A519 |
High fatigue strength,High yield strength,lightweight,precision dimensions (±0.1mm) |
| Engineering and Mining Support | Anchor Bolts,Support Pipes,Hydraulic Props | ASTM A519,DIN 2391, JIS G3441,EN 10297-1, ISO 10799 |
High Strength &Yield Strength&High Elongation Customization Service – Special steel grades,dimensions and surface treatments available according to project requirements |
| Construction Machinery | Drive shaft sleeves ,Gearbox Guide Tubes,Crane Boom Guide Tubes,Excavator Arm Tubes,Loader Frame Tubes, Arctic Low-Temperature Tubes | ASTM A519,DIN 2391, JIS G3445,EN 10210-1, GOST 8733,ASTM A106, ISO 9329 |
ID/OD tolerances of ±0.05mm.Wall thickness uniformity straightness ≤0.5mm/m |
| Fluid Transport Systems | Oil/Gas pipelines,chemical systems,Power/Energy | ASTM A106 Gr.B, EN 10216-2,GOST 8734 |
Eddy Current + Ultrasonic Testing,Hydrostatic Testing |
| High-Pressure Boilers | Superheaters,Steam lines,Reheaters,Economizers) | ASTM A192,DIN 17175, EN 10216, JIS G3461/G3462 |
Enhanced material density through cold-drawing/rolling ensures long-term stability Full Compliance with Int’l Standards,Superior Creep & Fatigue Resistance |
| Geological Drilling | Drill Pipe,Tubing | ASTM A519,API 5DP, EN 10208-2 |
High Strength & Wear Resistance precision Dimensions Impact & Fatigue Resistance |
| Agricultural Machinery | Hydraulic cylinders,drive shafts,Lift arms, steering housings,Boom frames | ASTM A519,EN 10210-1, DIN 2391,GOST 8733, JIS G3445 |
Material Advantages:High Strength & Lightweight,Precision Cold-Drawing Technology,Dimensional accuracy ±0.05mm |
| Petroleum Cracking Units | Reformer Tubes,Heat Exchanger Tubes,Reactor Feed Pipes,Transfer Lines,Quench Oil Pipes | ASTM A335,ASTM A213, EN 10216-2 |
Optimized Material Purity,Precision Dimensional Control,Customized Solutions |
Tailored Features · Designed Exclusively for Your Needs
Breakthrough in Pure Iron 1215 Steel Tube Mass Production – 30% Cost Saved vs. Solid Bar Machining Industry-First Innovation:
We’ve achieved mass production of precision soft iron carbon tubes and 1215 free-cutting steel tubes, eliminating costly machining steps for OEMs.
Key Benefits:
✔ 30% Lower Total Cost– Replace solid round bars (no boring needed)
✔ Faster Production – Reduced machining & assembly time
✔ Less Waste – Precision hollow tubes optimize material use
Applications: Automotive, Hydraulics, Fasteners, and Machined Components.
Cold Drawing + Cold Rolling Dual-Process Technology – Affordable Small-Diameter Seamless Steel TubesInnovative Production for Precision Tubes:
Our self-developed piercing mill combines cold drawing & cold rolling, optimizing efficiency for small-diameter seamless steel tubes (OD<50mm).
Key Advantages:
✔ Lower Cost – Dual-process reduces material waste & energy use
✔ Tighter Tolerances– Improved surface finish & dimensional accuracy
✔ Faster Lead Time– Streamlined production vs. traditional methods
Applications: Automotive, Hydraulics,Oil & Gas/Petrochemical，High-Pressure Boilers，and Fluid Transport Systems.
100+ Carbon Steel Grades – Customize for 20% Cost Savings (Machining,Construction More） Premium Steel Supply Chain:
Partnering with Baosteel, Xingcheng Shagang, we offer 100+ fully customizable carbon steel grades with guaranteed quality and stable supply.
Customization Advantages:
✔ Chemical Composition– Adjust C, Mn, Si, etc. for specific applications
✔ Mechanical Properties– Yield/Tensile strength optimization
✔ Rigorous QC– Full inspection (UT, hardness testing, dimensional checks)
✔ 20% Procurement Savings– Bulk pricing process efficiency
Key Industries Served: Machining Automotive，Construction Infrastructure, Oil Gas, Heavy Equipment
High-Precision Tube Straightening Technology – ≤0.5mm/m Tolerance for 30% Faster MachiningIndustry-Leading Straightening Solutions:
Our proprietary system delivers carbon steel tubes with ≤0.5mm/m straightness-4X more precise than industry standards, specifically engineered for high-speed machining applications.
Key Advantages:
✔ 30% Production Boost– Perfect straightness reduces lathe processing time
✔ Tool Life Extension– Minimizes cutting tool stress and wear
✔ Cost Efficiency– Lower maintenance and higher throughput
Technical Superiority:
In-House Developed Equipment– Customized for machining-grade precision
20+ Years Expertise– Master technicians ensure optimal results
Automated Quality Control– Consistent straightness verification
Ideal for:Hydraulic Cylinder Tubes, Automotive Shafts, Industrial Machinery, Oil Gas Equipment
Ultrasonic + Eddy Current Dual-Testing – 0.20mm Flaw Detection for Critical Steel Tubes Industry-Leading NDT Precision:
Our dual-technology inspection systemdelivers 0.20mm flaw detection accuracy– the gold standard for mission-critical tubing applications.
Dual-Testing Advantages:
✔ Ultrasonic Testing (UT)– Detects 0.20mm micro-cracks & inclusions
✔ Eddy Current (ET)– Pinpoints surface/subsurface defects
✔ Multi-Probe Array– 360° coverage (ID/OD/wall thickness)
Two-Layer Quality Assurance
Flaw Detection: Cracks/pores/inclusions ≤0.20mm
Dimensional Control: ±0.05mm tolerance verification
Critical Applications: Automotive Airbag Tubes,Fluid Transport Systems, Petrochemical High-Pressure Piping
09CrCuSb steel pipe, also known as ND steel Tube or Corten Steel Pipe, is a specialized corrosion-resistant seamless tube specifically designed for harsh environments. It excels in applications where resistance to sulfuric acid dew point corrosion, marine salt spray, and weak acid/alkali conditions is required.
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11SMn30 Free-Cutting Steel Seamless Tubes represent a specialized category of high-sulfur phosphorus composite free-cutting steel tubes engineered specifically for high-efficiency machining applications. Unlike conventional structural steels, these free-cutting steel tubes feature a unique chemical composition with controlled carbon content ≤0.14%, manganese
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Seamless Tubes represent a premium-grade, high-sulfur phosphorus lead-free free-cutting steel tubing engineered specifically for automated, high-speed precision machining applications. Unlike conventional structural steels, these American ASTM standard 1215 seamless tubes feature an ultra-low carbon content (≤0.09%), optimized manganese (0.75%-1.05%), and el
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Q355B Low-Alloy High-Strength Seamless Steel Tubes represent Chinese GB standard low-alloy high-strength structural steel tubes engineered for general industrial applications requiring optimal balance between strength, toughness, and cost-effectiveness. These low-alloy structural tubes feature controlled carbon content ≤0.21% with manganese levels of 1.00%-1
View product →Tell us the material grade, outer diameter, wall thickness, quantity and end-use requirements.
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