南非采购需求：不锈钢管，不锈钢无缝管

I'm looking for a quote on stainless steel hollow bars with specific dimensions: 42mm inner diameter, 48mm outer diameter, and a total length of 1200mm. Please provide details on material grade and any certifications you might have. Additionally, it would be great if you could share your pricing, available quantities, and lead times for delivery. If there are any minimum order requirements or options for customization, please include that info as well. Looking forward to your prompt response!