Frequently Asked Questions
Answers on tolerances, certifications, materials, and capacity — the details procurement teams ask about before placing
Common Questions from Buyers
What tolerance can Genn-Hann achieve in precision cutting?
Our precision cutting lines hold tolerances down to ±0.01mm on strip, coil, and sheet slitting. This level of dimensional control matters most for automotive and hydraulic/pneumatic components where batch-to-batch consistency affects downstream assembly and fit — our tolerance capability has been verified against customer CPK requirements.
Which stainless steel grades do you supply?
We supply SUS 304, 304L, 301, 316L, 430, 409, and 439 in full-spec ranges, covering both austenitic and ferritic grades. This lets buyers source a single supplier for multiple grade requirements across different product lines instead of managing several vendors for different steel types.
What certifications does Genn-Hann hold?
We are certified to ISO 9001 (quality management), ISO 14001 (environmental management), ISO 13485 (medical device manufacturing), and ISO/TS 16949 plus IATF 16949 (automotive industry quality standards). These certifications are relevant to buyers who need documented traceability and audit-ready quality systems, particularly for automotive and medical-adjacent supply chains.
What is your production capacity?
Our annual capacity is under 500 tons, reflecting a smaller, workshop-scale operation rather than a high-volume commodity mill. This setup is suited to customers who need customized dimensions, tighter tolerances, or smaller specialized batches rather than large undifferentiated bulk orders.
Which industries do you primarily serve?
Automotive manufacturing and parts supply account for over 60% of our business, with the remainder distributed roughly evenly (20–40% each) across industrial machinery/equipment and construction/building applications. Buyers in these sectors benefit from our accumulated process experience with grade selection and cutting tolerances specific to their end use.
Can you customize sizes and coatings?
Yes. Beyond standard strip, coil, and sheet, we offer custom-sized cutting, pre-coated coil (Coating Coil), cold forging and die forming, and stamping with assembly. Orders can be specified to your drawing dimensions rather than limited to standard mill sizes.
Do you supply standard parts like bolts, nuts, or bearings?
Yes, in addition to raw strip, coil, and sheet, we produce standard specification parts including bolts, nuts, and bearings using cold or die forming processes followed by stamping and assembly. All parts go through the same quality inspection process as our sheet and coil products.
How many countries do you export to, and how long has Genn-Hann operated?
We have over 40 years of experience in precision stainless steel cutting and processing, and currently export to more than 50 countries. This track record reflects sustained ability to meet varied international quality and documentation requirements across automotive, machinery, and construction buyers.
What quality checks are performed before shipment?
Each batch goes through dimensional and material quality inspection aligned with our ISO 9001 and IATF 16949 certified processes before shipment. Buyers can request inspection documentation to support their own incoming quality control procedures.