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For Global Processors & Distributors
We supply high-performance steel pipes for cold drawing, cold rolling and OEM branding, designed to reduce processing costs while ensuring precision and durability. Our pipes feature excellent cold workability, tight tolerances (±0.5% OD) and OEM-friendly services such as removable laser marks and neutral packaging.
Backed by ISO 9001, IATF 16949 certifications and SGS/TÜV test reports, our solutions help reduce material waste by 15% or more compared with standard options. Flexible MOQs start at 5 tons per size for automotive, hydraulic, machinery and other industrial applications.
Rigorous Quality Control at Every Stage – From Raw Material to Finished Pipes
We implement strict quality control throughout the entire production process, from raw material inspection to final product testing. Our three-tier inspection system—First Article, In-Process and Final Inspection—ensures consistent quality in every batch, with full traceability and detailed dimensional, surface and performance reports. ISO 9001 and IATF 16949 systems support every stage.
Full Traceability
Detailed Inspection Report
ISO 9001 & IATF 16949 Certificate
Value-Added Steel Pipe Processing – Precision Machined, Protected & Export-Prepared
We provide complete value-added processing that transforms raw steel pipes into production-ready components, including precision cutting, chamfering, threading, anti-rust treatment and export-standard packaging. These services can reduce total costs by 15% while supporting faster assembly, global compliance and complete documentation.
Precision Cutting
Chamfering
Turning
Threading
Export Packaging
Export Container Loading
Production Process
Raw Material
Perforation
Cycling Pickling
Cycling Annealing
Squeeze Head
Cold Rolling
Cold Drawing
Straightening
Ultrasonic & Eddy Current Flaw Detection
Cutting Head & Tail
Tensile Test
Finished Product Inspection
Inspection Process
1Raw Material Inspection & Traceability
2Perforation Period Inspection
3Raw Pipe Inspection & Traceability
4Ultrasonic and Eddy Current Flaw Detection
5Surface Inspection on Finished Steel Tubes
6Size Inspection on Finished Steel Tubes
7Tensile Test
8Chemical Composition Analysis
9Hardness Test
Our Certificates
TÜV Test Report
IATF 16949 Automotive Quality Management System Certificate
ISO 9001 Quality Management System Certificate
ISO 15835 Certificate
Production License of Special Equipment of the People’s Republic of China
CRRC Material Test Report
Why Tenjan Steel Tubes?
Custom-Engineered Steel Pipes – Precisely Tailored to Your Project Requirements
Fully customizable steel pipe solutions built to exact specifications, including flexible shapes and sizes compliant with ASTM, EN and JIS standards, application-specific mechanical properties and premium raw materials from certified mills.
Premium Quality, Optimized Cost – Maximum Value Steel Pipe Solutions
Highly cost-effective steel pipes that maintain strict quality standards while reducing total project costs by 10–15%, supported by lean manufacturing, strategic sourcing, ISO 9001 certification and full traceability.
Precision Quality Control – Full Traceability & Certified Excellence
End-to-end process traceability, IATF 16949 and ISO 9001 certified systems, plus rigorous inspections across more than 30 processes and 60 parameters deliver consistent performance for critical applications.
Dedicated After-Sales Support – Quality Assurance Beyond Delivery
Comprehensive after-sales service includes TÜV/SGS third-party inspection support, dedicated one-to-one technical assistance and proactive order tracking, with regular follow-up after delivery.
