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For Global Processors & Distributors
We supply steel pipes for cold drawing, cold rolling and OEM branding, with options for removable laser marks and neutral packaging. Define the material grade, delivery condition, critical dimensions and downstream processing so the proposed tube can be reviewed against your drawing.
Discuss the applicable quality certificates, inspection reports, minimum order quantity and delivery schedule with our team before ordering. Material savings depend on the starting size, cutting plan and machining allowance; compare these against your current process rather than assuming a fixed percentage.
Rigorous Quality Control at Every Stage – From Raw Material to Finished Pipes
A documented inspection plan connects raw material checks, first-article approval, in-process inspection and final release. Define the critical dimensions, surface and mechanical requirements, inspection frequency, acceptance criteria and traceability records in the order. Review the applicable quality certificates and required test reports against that agreed scope.
Full Traceability
Detailed Inspection Report
ISO 9001 & IATF 16949 Certificate
Value-Added Steel Pipe Processing – Precision Machined, Protected & Export-Prepared
Value-added processing includes precision cutting, chamfering, threading, anti-rust treatment and export packaging. Specify the finished dimensions, end preparation, surface protection and packing requirements in the RFQ. Compare the complete processing route and landed cost before deciding which operations to outsource.
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
Compare material yield, machining allowance, processing steps, inspection and transport on the same specification. Our team can review the drawing and quotation scope with you so potential cost savings are evaluated without changing the agreed quality requirements.
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.
