Seamless coil (pure seamless) process: first cold-rolled billet after cold-drawn winding. Surface treatment: vacuum bright annealing (the use of vacuum bright annealing process, stainless steel tube inside and outside the surface will not contact with oxygen, do not produce oxide skin, make stainless steel coil inside and outside the surface cleaner, bright, more delicate) delivery status: soft (HRB ≤90) material: 304/304L/316L/321/317L Standard: ASTM (ASME) SA/A312/A213/A269 and DIN, gB, JIS. Specification: outside diameter: φ3mm-φ38mm, wall thickness: 0.5 mm-3mm tolerance range: outside diameter: ± 0.05 mm, wall thickness: ± 0.05 mm       Length: 1.1: according to the outer diameter and wall thickness, the weight of a seamless coil production weight of 80KG-150KG; 1.2: Please note: The longer the length of seamless coil more difficult to produce, with the price is more expensive, single coil weight less than 28KG price appropriate, 1.3: stainless steel coil length according to the demand of the outer diameter and wall thickness, with stainless steel tube theoretical calculation formula conversion, 1.4: serious note: seamless coil without welding point. 1.5: according to the demand, can also use multi-disc stainless steel seamless coil welded into more than a few kilometers of ultra-long stainless steel coil. Packing: packed in woven bags or in plywood cases, plywood spools for easy transportation and storage. Finished stainless steel coil units are packed in rolls or wrapped in wooden spools, sea, land, air transport are very convenient, reduce transport costs and also facilitate customer inventory.Product advantages: stainless steel bright coil in use can be required in accordance with the length of cutting, bending, reducing waste, reduce costs. Especially in the transportation pipeline installation save installation joints, improve safety performance. Especially in the hydraulic system to reduce the risk of system leakage, seamless coil is a good choice, in the installation process greatly reduced the use of joints, the safety of the entire pipeline system has been improved, enhance the security of system operation.Applications: stainless steel coil is widely used in petroleum drilling, shipbuilding, aerospace and petrochemical refining equipment, wound heat exchanger and cold treatment of chemical industry, gas pipelines, fluid pipelines, steam insulation cables, stainless steel heating coil (heating coil) , high pressure fluid pipeline, stainless steel heat insulation cable, PVC sheath protection of corrosion-resistant stainless steel pipe cable, umbilical cable and other industries.