美国采购需求：碳钢管、不锈钢管、焊接钢管、无缝钢管

I am looking for a quote for a specific type of API 5CT product. The dimensions I need are standard, so if you could provide your pricing based on the specified details, that would be great. Please include any pertinent information about lead times and minimum order quantities as well. Additionally, if you could provide details regarding the quality certifications and any available options or variations, it would help in making a more informed decision. I'm interested in potentially establishing a long-term relationship, so any insights you might have about your manufacturing capabilities would also be appreciated. Looking forward to your prompt response!