◆ Tailored Solutions for Your Needs Tenjan deeply analyzes your application scenarios, leveraging mature steel tube production techniques and 30+ years of expertise. ◆ Any Shape, Any Size – Ready to Use We specialize in manufacturing uniquely shaped and special-sized section steel—eliminating costly secondary processing of standard profiles. Save time and re
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 |
| Materials | Carbon Steel • Alloy Steel • Special grades available |
| Process | Cold Drawn & Cold Rolled for superior finish |
| Standard | Typical Grades We Supply |
| GB | 16Mn,Q345B(Q355B),Q345C(Q355C),Q345D(Q355D),Q345E(Q355E),Q420,Q460,20Cr, 40Cr,15CrMo,20CrMo,30CrMo,35CrMo, 42CrMo,20CrNiMo,40CrNiMo,20CrMnTi,20Mn2, 40Mn2,40MnB,35MnB,35Mn,15CrMn,20CrMn,20CrMnMo,38CrMoAL,36Mn2V,38Mn2V, 40MnMoV,15Mo3, 16Mo3,31CrMoV9 |
| ASTM | Gr·50,Gr·55,Gr·65,5120,5140,4130,4135,4140, 8620,4340,SAE 5120,1524,1340,15B41,SAE5115,SAE 5120,SCM23 |
| EN/DIN | E355, ST52,S355JR,S355JO,S355J2,S355NL,S420N,S420NL,S460NL, 20Cr4, 41Cr4,13CrMo4-5,20CrMo4,25CrMo4,34CrMo4,42CrMo4, 20NiCrMo2,34CrNiMo6,20MnCr5,22Mn6,42Mn6,42MnB4, 34MnB5,37Mn5,16MnCr5,20CrMo5. |
| JIS | SCr22,SCr440,SCM415,SCM420,SCM430,SCM435,SCM440, SNCM220,SNCM439,SMnC420H,SMn420,SMn438, SMnC420H |
| GOST | 15Г2, 09Г2C/10Г2C1,15Г2,14Г2С,C355,20Х,40X,15XM,20ХМ,30ХМ, 35ХМ,38ХМ,20ХНМ,40ХНМ,20ХГТ,20Г2,40Г2,18ХГ,20ХГМ |
| Other Speical Grades can be customized | |
| Industry | 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 |
OD tolerances of ±0.05mm.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
Precision-Engineered Alloy Steel Solutions – 20% Cost Efficiency Certified Mill Partnerships:
Collaborating with Baosteel, Xingcheng, and Shagang to deliver:
✔ 100+ Custom Alloy Grades-Chemistry control (C, Cr, Ni, Mo adjustments)
✔ Engineered Mechanical Properties– Yield/Tensile strength customization
✔ Industrial-Grade QC– Full-spectrum testing (UT, hardness, dimensional)
✔ Verified 20% Cost Savings – Through optimized supply chain
Application: Hardware fitting, Automotive, Heavy Machinery, Energy
Elite Cold-Drawn Alloy Steel Sections & Round Bars R&D Team – Precision Custom Solutions
Custom Alloy Development – Tailored Cr-Mo/V/Nb micro-alloying
Complex Profile Drawing– Hexagonal, multi-fluted, asymmetrical shapes
Multiple Surface Finishes-BK/A/N/Polished Finishes for Industrial Applications
Key Application Industries: Hardware Components, Precision Machining, Energy Sector, Auto/Motorcycle Parts, Heavy Machinery
Industrial Pickling & Surface Treatment for High-Quality Section Steel – ASTM/ISO Certified Precision-Controlled Pickling Process for Superior Surface Quality
Our Pickling Process Ensures:
✔ Consistent Surface Quality – Effective removal of scale, oxides, and impurities
✔ Tight Dimensional Control – Maintains ±0.1mm tolerance with alloy molds
✔ Optimized for Further Processing–Ideal base for plating, painting, or machining
✔ Compliance with Industry Standards– Meets ASTM A484, ISO 2768, and RoHS
Strategic R&D Investment in Advanced Steel TechnologiesDriving Material Innovation Through Collaborative Partnerships
Measurable Impact of Our R&D
High-Strength Alloys – Yield strength ↑35% vs. conventional grades Lightweighting potential up to 25%
Machinability – Tool life improvement 40% (ISO 3685) -Lower CNC machining costs
◆ Tailored Solutions for Your Needs Tenjan deeply analyzes your application scenarios, leveraging mature steel tube production techniques and 30+ years of expertise. ◆ Any Shape, Any Size – Ready to Use We specialize in manufacturing uniquely shaped and special-sized section steel—eliminating costly secondary processing of standard profiles. Save time and re
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