ISO 9001:2015 certified. Committed to delivering defect-free castings that meet international standards — every time.
JN Metal is committed to achieve customer satisfaction by supplying quality products to meet customer requirements. We continuously improve at all levels in process, infrastructure, and systems.
Stringent standards for acceptance of raw materials lead to a perfect quality circle — emphasizing not only flawless products but improvement through various innovative moves. Quality function, analysis, and statistics are performed as per product needs and can be compared to international systems and standards.
JN Metal is fully equipped with an in-house lab with every required chemical and instrument for the analysis of different non-ferrous alloys. The company provides guaranteed chemical analysis of non-ferrous metals as per IS, BS & ASTM standards.
The company is fully equipped with an inspection room with highly precise testing instruments like Digital Verniers, Go/No-Go Gauges, Bore Gauges, Dial Gauges, and more.
"In the casting process, first few castings will be inspected dimensionally and the pattern is qualified afterward. Only random inspections will be done. Every casting must be inspected for finding out defects in the casting process."
TÜV India certified quality management system since 2015. Our QMS covers the entire production chain from raw material acceptance to final inspection and despatch.
Stringent incoming quality control for all raw materials. Spectro analysis of non-ferrous alloys performed before any material is released to production.
First few castings of every new pattern are dimensionally inspected and the pattern is formally qualified before full production run commences.
Regular internal audits, process reviews, and improvement initiatives ensure our quality standards evolve alongside customer and industry requirements.
100% visual inspection of all castings for surface defects, cold shuts, mis-runs, cracks, and dimensional gross errors before any further processing.
100% CoveragePressure testing of valve bodies, pump components, and pressure-bearing castings to verify leak-tight integrity under operating and proof pressures.
Leak DetectionMPI for ferrous castings to detect surface and near-surface discontinuities including cracks, seams, and porosity not visible to the naked eye.
Surface / Sub-surfaceX-ray or gamma radiography for critical castings to detect internal defects — porosity, shrinkage cavities, inclusions — to ASTM E446 / E186 standards.
Internal DefectsUT for detecting internal flaws, thickness measurement, and bond quality in bi-metal castings — particularly effective for large, thick-section components.
VolumetricDPI for detecting surface-breaking defects in non-ferrous castings where MPI is not applicable — ideal for aluminium, bronze, and stainless steel components.
Non-FerrousOptical emission spectrometry for precise elemental analysis of all non-ferrous alloys — guaranteeing chemical composition per IS, BS, and ASTM specifications.
Chemical AnalysisMetallographic examination of microstructure to verify grain size, phase distribution, graphite morphology, and heat treatment results against specifications.
MetallographyDestructive tensile testing for UTS, yield strength, and elongation; Brinell/Rockwell hardness testing to verify mechanical property compliance.
Mechanical PropsBureau of Indian Standards (BIS) specifications for ferrous and non-ferrous castings used in domestic industrial supply chains.
BSI standards for castings supplied to UK and European industrial customers — particularly for bronze, gunmetal, and brass alloys.
ASTM International standards for castings supplied to North American and global OEM customers in industrial, marine, and process industries.
JN Metal has developed a wide array of value-added services to meet our customers' specific and ever-changing requirements. We are known for prompt replies and customer-centric delivery timelines.
We operate with a human capital of 50 people and are accredited with ISO 9001:2015. Our QMS is audited annually by TÜV India — ensuring our quality standards are independently verified and continuously improving.
JN Metal is known for its prompt reply and customer-centric approach — from enquiry to delivery, we keep our customers informed at every stage of production.