Steel pipe, manufactured to spec and shipped worldwide. 工厂直造钢管，按标定制，发运全球。
RUILONG STEEL INDUSTRY (NANTONG) Co., Ltd. is a steel pipe manufacturer producing seamless, welded, alloy and stainless steel pipe for energy, construction and machinery — made in our own mill to GB, ASTM, API, ASME, EN, DIN and GOST standards.
瑞龙钢铁实业（南通）有限公司是一家钢管制造企业，自有工厂生产无缝管、焊管、合金管与不锈钢管，面向能源、建筑与机械行业，执行 GB、ASTM、API、ASME、EN、DIN 及 GOST 标准。
Full steel pipe nomenclature完整钢管产品目录
From high-pressure seamless tube to large-diameter spiral pipe and finished fittings — produced in our own mill for procurement teams, EPC contractors and distributors.
从高压无缝管到大口径螺旋焊管及成品管件——均由自有工厂生产，服务采购团队、EPC 承包商与经销商。
From production line to port从生产线到港口
Real production and export from our plant in Nantong, Jiangsu — rolling, finishing, packing and loading under one roof.
江苏南通工厂的真实生产与出口——轧制、精整、打包、装柜一体化。
Buy direct from the manufacturer工厂直供的优势
Size & supply range尺寸与供货范围
Who we are关于我们
We are a Chinese steel pipe manufacturer, producing seamless, welded, alloy and stainless steel pipe since 2020. From our plant in Nantong, Jiangsu, we run our own production lines and quality lab, manufacturing to international standards and shipping to projects worldwide.
From a single trial order to full project tonnage, we manufacture, inspect, document and export in-house — so buyers receive the right material, certified and on time.
瑞龙钢铁是一家中国钢管制造企业，自 2020 年起生产无缝管、焊管、合金管与不锈钢管。工厂位于江苏南通，拥有自有生产线与检测实验室，按国际标准制造并发运至全球项目。
从首批试单到整个项目吨位，我们自行生产、检验、出具单证并出口，确保客户按时收到合格材料。
Send us your enquiry向我们发送询盘
Tell us the grade, dimensions, standard and quantity you need — we'll reply with a quotation direct from the factory.
请告知所需材质、尺寸、标准与数量，我们将由工厂直接回复报价。
Email or call our sales team directly and we'll get back to you with availability, pricing and lead time.
直接邮件或致电我们的销售团队，我们将就货源、价格与交期尽快回复。
Email info@ruisteel.com发送邮件 info@ruisteel.com Call +86 188 0629 4018致电 +86 188 0629 4018