Technical specifications: Outer diameter: 25-508mm Single length: 3-14m, fixed length as per clientâ??s requirements Standards: API SPEC 5CT, API SPEC 5B, API SPEC 5L Slot sizes: 0.10, 0.15, 0.2, 0.25, 0.30-3mm, also achieved upon customer request Open area up to 60% Materials: low carbon, low carbon galvanized steel (LCG), steel treated with plastic spraying, stainless steel, steel (304) End connection: plain beveled ends for butt welding or threaded Packing: plain/bevel end with end caps, waterproof packing, bare packing, in bundle, nest packing, standard export packing Certification: ISO 9001: 2000 Delivery 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