The casing project undertaken by Nigerian contractors in Nigeria is about 1855 tons of premium connection casing. It is required to complete the production once in 30 days .We all try our best to meet the customer’s requirements from our side and save the cost for the customer. Customers have high requirements for quality. Before production, they sent SGS to inspect our connection size. During the production process, they sent a supervisor to supervise the whole process of production, transportation and shipment.