At Super Metal Manufacturing Co., quality is at the core of everything we do. Since our establishment in 1965, we have earned a reputation as a leading manufacturer and exporter of high-quality 4140, EN19, and 42crmo4 round bars. Our commitment to excellence in quality control ensures that our products meet the highest industry standards and the specific needs of our customers.

The first category involves physical tests, where the structural integrity and mechanical properties of our stainless steel pipes and tubes are meticulously examined. These tests include dimensional checks, tensile strength evaluations, hardness assessments, and elongation tests. By subjecting our products to these rigorous physical examinations, we can guarantee their durability, reliability, and suitability for a wide range of applications.

Quality Objectives :

We consider three elements to be essential for the overall quality of the company services :

  • Independence & Objectivity.
  • Technical & Scientific Quality.
  • Practical Benefits to Clients.

Our Excellence :

Quality is our prime aim. We are able to maintain high-quality standards through our committed personnel and sound infrastructure. We ensure that finest quality material is used for our products. For ensure the quality of each material, we are providing Materials Test Certificate along with supply. Our teams of experts maintain a vigil on the quality of the products. Every single piece is attached with test certificates and reports. We are continually improving our quality to serve our clients better.

Quality Control :

We exercise stringent quality control measures for ensuring the accurate dimensions and mechanical properties of our products. Our quality assurance system assures each product to pass through following processes and quality systems :

Quality Assurance :

The quality assurance system is guided by principles that support our unique working culture which incorporates respect, self-management, open communication, and creativity.

 Our Quality Standards :

The bitterness of poor quality remains long after low pricing is forgotten. So, we follow strong measure of quality checking. Understanding Customers requirement and ensuring to supply as per these requirements is realized with the help of Quality Assurance and Quality Control at Super Metal Manufacturing Co. Across the entire business chain of supplies, operations and marketing appropriate quality assurance systems are in place to ensure correctness at each step of the cycle.

In our philosophy, quality is not only the durability and defect free nature of product but its utility and applicability to satisfy the sole purpose for which it was bought. Thus, we are committed to produce products, which can satisfy different requirements and purposes. We have adopted stringent quality control measures to ensure superior quality and zero defects products. Quality is checked at different stages of production and supply and the raw material we use is sourced only from reliable and established vendors


4140 / EN19 / 42CrMo4 Bars – Test Process Chart

Test Name Purpose Standard/Method Stage
Chemical Composition Analysis Verifies material grade and alloy content ASTM E415 / Optical Emission Raw Material
Ultrasonic Testing (UT) Detects internal flaws or voids ASTM A388 After Forging/Rolling
Hardness Testing Measures surface hardness ASTM E18 (Rockwell) / Brinell Final Product
Tensile Test Determines tensile strength, yield, and elongation ASTM A370 After Heat Treatment
Impact Test (Charpy V-Notch) Measures toughness at room or sub-zero temperatures ASTM E23 On Request / Critical Apps
Microstructure Examination Evaluates grain structure, inclusion, and phase distribution ASTM E112 After Heat Treatment
Magnetic Particle Inspection (MPI) Detects surface and near-surface cracks in ferromagnetic materials ASTM E709 Post Machining
Dimensional Inspection Verifies size, tolerance, and straightness As per client specs Final QC
Surface Finish Inspection Checks for scale, rust, cracks, and finish quality Visual / Manual Final QC
Heat Treatment Report Confirms process parameters: temperature, duration, cooling medium Internal Record / Cert Post HT
Third-Party Inspection (Optional) Ensures compliance by external certifying agencies like BV, SGS, TUV, etc. Client-Specified Final Dispatch