Import Ci Manhole Covers — Buy in Bulk from Supplier in India

Qsis supplies cast iron manhole covers designed for municipal drainage and sewer systems, with load ratings compliant with EN 124 Class D400 and dimensions ranging from 600 mm to 800 mm in diameter. The covers feature a ribbed, non-slip surface and are manufactured using grey cast iron with a minimum tensile strength of 200 MPa, as specified in the product data. Each unit includes a secure locking mechanism to prevent unauthorized access and displacement under heavy traffic.

The material composition follows standard grey cast iron grades, with carbon content between 2.5% and 3.5% and silicon levels around 1.8% to 2.5%. These covers are sand-cast and naturally resistant to corrosion, though no coating or galvanization is applied. Typical industry practice includes a minimum wall thickness of 25 mm for D400-rated covers to ensure structural integrity under 40-ton wheel loads. Variants are available with or without lifting holes, depending on installation requirements.

These manhole covers are primarily purchased by municipal engineering contractors, civil infrastructure developers, and public works departments in South Asia and Southeast Asia. Trade terms are offered as FOB Kolkata or CIF to major ports, with minimum order quantities typically starting at 10 units per size. Packaging is in wooden crates with anti-rust paper, and lead time averages 25 to 35 days after deposit confirmation. Buyers should confirm dimensional tolerances and load certification before shipment.

Qsis operates from Hb 301/2, Sector III, Salt Lake City, Kolkata, West Bengal, India, with no public details on years in business, workforce size, or production capacity. The supplier is classified as imported and verified under Harbor trust tier, indicating a basic level of transactional reliability. There is no information on certifications, export history, or client list in the listing data.

The company appears to function as a direct manufacturer or exporter of cast iron infrastructure components, with no indication of third-party sourcing. Response rate and average response time are recorded as zero, suggesting limited or no active communication channel. Buyers should verify production capability and quality control procedures directly before placing orders.