Technical specifications: Outer diameter: 114.3-508mm Standards: API SEPC 5CT, 5B Steel grades: H40, J55, K55, N80, L80, C90, C95, T95, P110, Q125 Connection: STC, LTC, BTC and premium connection Inspection: SGS, BV Certification: ISO 9001:2000 Delivery lead-time: after received deposit 10-60 days according to the quantity Payment terms: T/T, 100% L/C at sight Port of shipment: Shanghai port, Qingdao port Quality control: Company has perfect quality assurance system, advanced testing equipment and high-qualified management team with control over series of activities such as contract signing, product research and development, productive process and test, product preservation and delivery
