Welcome to Changzhou Tenjan Steel Tube Co., Ltd
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ASTM A106 Grade B seamless steel tubes represent the fundamental standard for high-temperature fluid conveyance in demanding industrial applications. These cold-drawn seamless carbon steel tubes are specifically engineered for reliable performance in steam, petroleum, and natural gas transmission systems where elevated temperatures and pressures are present. As a cornerstone material fully compatible with ASME boiler and pressure vessel codes, ASTM A106 Grade B delivers the optimal balance of high-temperature stability, pressure integrity, and cost-effectiveness for critical fluid transport applications.
Standard Specifications & Material Excellence
ASTM A106 establishes rigorous requirements for seamless carbon steel tubes intended for high-temperature service. At Tenjan, we specialize in producing these tubes through advanced cold-drawing processes that ensure superior dimensional accuracy and surface quality, making them ideal for precision piping systems and heat exchange equipment.
Technical Superiority Through Cold Working
Our manufacturing expertise in cold-drawing technology enables us to produce ASTM A106 Grade B tubes with exceptional characteristics:
Enhanced Material Properties
• Optimized grain structure through controlled cold reduction and heat treatment
• Superior surface finish minimizing fluid resistance and scaling potential
• Consistent wall thickness distribution ensuring uniform pressure containment
• Enhanced mechanical properties through strain hardening effects
Precision Engineering
• Exceptional dimensional stability and straightness
• Tight diameter and wall thickness tolerances for reliable joint integrity
• Smooth internal surface reducing turbulence and pressure drop
• Superior concentricity for uniform stress distribution under pressure
Quality Assurance & Performance Verification
Tenjan's commitment to quality ensures every ASTM A106 Grade B tube meets the most demanding application requirements:
Comprehensive Testing Protocol
• Mandatory hydrostatic testing verifying pressure containment capability
• Advanced ultrasonic examination detecting internal imperfections
• Complete mechanical properties validation including tensile and elongation tests
• Chemical composition verification ensuring material conformity
Certification & Traceability
• Full compliance with ASTM A1016/A1016M certification requirements
• Complete material traceability from steelmaking to finished tubes
• ISO 9001 certified manufacturing processes
• Customized documentation supporting project compliance needs
Applications & Engineering Solutions
ASTM A106 Grade B tubes from Tenjan provide reliable performance across diverse high-temperature applications:
Power Generation Systems
• Steam conveyance lines in thermal power plants
• Boiler feed water and steam extraction piping
• High-temperature water circulation systems
• Turbine and heat recovery steam generator connections
Process Industry Applications
• Petroleum refinery process piping
• Chemical plant high-temperature fluid transport
• Natural gas processing and transmission systems
• Industrial heating and thermal fluid circuits
Industrial Plant Services
• Saturated and superheated steam distribution
• High-temperature compressed air systems
• Process heating medium circulation
• Plant utility and service piping networks
Tenjan Manufacturing Advantage
Our specialized focus on cold-drawn seamless tubing delivers distinct benefits for high-temperature applications:
Technical Expertise
• Advanced cold-drawing technology ensuring precision dimensions
• Optimized heat treatment processes for high-temperature stability
• Material selection guidance for specific service conditions
• Engineering support for complex application requirements
Quality Commitment
• Stringent process controls throughout manufacturing
• Continuous monitoring of critical quality parameters
• Professional technical assistance for installation guidance
• Reliable performance in demanding service environments
Customer-Centric Approach
• Flexible manufacturing accommodating specific project needs
• Responsive service supporting timely project execution
• Comprehensive technical documentation package
• After-sales support ensuring application success
Through our dedicated manufacturing approach, Tenjan delivers ASTM A106 Grade B tubes that combine standard compliance with practical application excellence. Our expertise in cold-drawing processes ensures we can meet your specific high-temperature fluid conveyance requirements while maintaining the highest standards of quality and reliability for your critical piping systems.
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
Why settle for generic materials when we can align specifications directly to your application? By focusing on only what you need, we deliver superior cost efficiency without compromising quality—saving you time and resources.
Our surplus capacity acts as a safety net, eliminating risks of bottlenecks or missed deadlines—critical for projects with strict timelines.
• Advanced metalworking: Piercing, pickling, heat treatment & cold forming
• Precision verification: Dual NDT (Ultrasonic/Eddy Current) + material testing (Tensile/Chemical)
• 24/7 lab monitoring of 60+ parameters ensuring product consistency
IATF16949: Automotive-grade quality for precision parts.
TS (Pressure Pipe): Safety compliance for critical infrastructure (e.g., pipelines, boilers).
ISO9001: General excellence in process management.
Plus optional third-party validation (TÜV/SGS) for added credibility in regulated markets like aerospace, energy, or medical devices.
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