◆ 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 | 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,C20,E235 |
| DIN | DC01,11SMn30,CK10,C10,ST35.8,CK20,C20,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 | |
| Industry | Key Applications Parts | Relevant Standards | Our Advantages |
| General Structural | Square & Rectangular Tubes | GB/T 3094,ASTM A500, EN 10210 |
Good Surface,lightweight,precision dimensions (±0.1mm) |
| Automotive and Motorcycle Component | Shock Absorbers,Steering Systems,Thrust Rods | EN 10305-1,JIS G3445, DIN 2391,ASTM A519, ASTM A513 |
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, ISO10799,DIN2393 |
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
Precision-Engineered Carbon Steel Solutions – 20% Cost EfficiencyCertified Mill Partnerships:
Collaborating with, we offer 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
Elite Cold-Drawn Carbon Steel Sections & Round Bars R&D Team – Precision Custom Solutions30+ Years of Combined Expertise in Precision Steel Engineering
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 Steel Section & Round Bars- 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
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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