Xintong Cast Pipe (Guangdong) Co., Ltd. offers high-quality Ductile Iron Blind Flanges (Blind Caps) – precision-cast pipe closure fittings designed to completely block and seal pipeline ends for pressure testing, temporary shutdown, or permanent pipe termination. Widely applied in municipal water supply, drainage networks, industrial fluid systems, and water conservancy projects, our blind flanges deliver excellent pressure resistance, sealing stability, and long-term anti-leakage performance for all kinds of pressurized pipelines

Custom & OEM/ODM Solutions for Global B2B Clients

As an integrated manufacturer specializing in R&D, production, sales and after-sales service, we provide professional supporting products and customized solutions for global engineering contractors, water supply companies and pipeline distributors:

Complete Size Range: Our blind flanges cover full specifications from DN80 to DN1600, matching all standard ductile iron pipes and fittings. Conventional sizes are in sufficient stock for fast delivery.

Precision Customization: We support customized flange diameter, bolt hole quantity and pitch, sealing surface type, and thickness according to customer drawings and project requirements to fit different pipeline standards and pressure grades.

Multi-Type Anti-Corrosion Treatment: Optional epoxy ceramic coating, polyurethane coating, asphalt paint and other internal and external anti-corrosion treatments. Suitable for potable water pipelines, corrosive soil, seawater environments and industrial fluid pipelines.

OEM/ODM Available: Custom brand logo, casting marks, product numbers and exclusive packaging are supported to meet personalized ordering demands.

Factory Direct Bulk Supply: Direct factory pricing, flexible MOQ, sufficient inventory and mature logistics. Our products are sold nationwide and exported to Southeast Asia, the Middle East, Africa and other overseas markets.

Why Choose Our Ductile Iron Blind Flanges?

Excellent Sealing & Pressure Resistance: Integral thick casting structure bears high pipeline pressure effectively. The flat and precise sealing surface perfectly fits rubber gaskets, achieving zero leakage and reliable pipeline closure.

Easy & Fast Installation: Standard flange design with accurate bolt holes enables quick bolt-on installation without welding. Ideal for pipeline pressure testing, temporary plugging and permanent end sealing.

Durable & Wide Applicability: High ductility, strong anti-deformation, anti-corrosion and seismic performance. Adaptable to various harsh environments and long-term buried pipeline projects.

Partner with Xintong Cast Pipe (Guangdong) Co., Ltd. for premium Blind Flanges. Welcome to consult technical parameters, request samples, and negotiate long-term OEM and bulk cooperation. We provide stable high-quality pipeline sealing fittings for global infrastructure projects.