加纳采购需求：螺栓、螺母、螺钉、垫圈、锚栓、螺纹杆

We are seeking a variety of stud bolts and nuts made from specific materials. Please provide pricing and availability for different sizes, ensuring to adhere to the relevant ASTM standards. Additionally, we require heat exchanger tubes in various diameters and gauges, including both carbon and stainless steel plugs. Kindly send us your best offers along with lead times for production and delivery. Please make sure to include any applicable certifications or compliance documents to ensure quality standards are met. Looking forward to your prompt response!