A roller coating PO straight pipe DN15-DN1200: 1. Straight pipe welding and inspection: steel pipe and flange welding and fabrication and inspection, in accordance with the JB470 - 94. Ⅰ standard implementation. 2. Rotomolding production of straight pipe: steel passed the test straight tube lined with plastic before sandblasting and degreasing treatment must be carried out, to maintain the relative cleanliness of the steel pipe and flange surface. After the pre-treatment of steel straight tube, both ends of the flange mouth open, flat on the electric wheel clamping starts to rotate. I am using the semi-automatic paragraph by paragraph on the steel tube outer flame heating, while heating Piecewise uniform feeding feeding mechanical heating segment, until the plastic linings processing to the standard thickness. This cycle until the lining to the plastic pipe lining. After processing, to be seized. . Guntu P0 fittings: Elbow, Equal Tee, vary by a three-way concentric iso-administered, eccentric iso administered, Stone and other. The specifications DN15mm-DN1200mm Steel rotomolding pipeline overcome a plastic-lined steel pipe flanging not calm down, intolerance negative pressure connectors, adhesion and low defect is downright tight lining process customers the best choice. Steel lined polyolefin (PO) Advantages: 1. Overall molding, no welds, no joints, corrosion-resistant, anti-aging, cracking, negative pressure resistance, and do not fall off. All lining surface forming a one-time, no artificial operation combined with point and welding points; good integrity, defect-free, seamless point. Any shape steel can roll lining, installation, easy maintenance, and the second patch cost savings. The appearance of the product is flat, smooth, bubble-free, non-toxic, non-pinhole. 3. The steel liner polyolefin (PO) Scope: widely used in petroleum, chemical, machinery, metallurgy, pharmaceuticals, dyes, food, biological and chemical, textile, electroplating, environmental protection and other fields. The corrosion protective layer on the various concentrations of the inorganic acids, organic acids, alkalis, salts are stable. Is the ideal alternative to rubber, enamel, glass, steel, stainless steel, plastic plate (tube) lining material in the temperature range of -60 ℃ ~ 90 ℃. Media Operating Temperature: -60 ℃ ~ 90 ℃ medium working pressure: positive pressure 0.6Mpa ~ 2.5Mpa, resistance, vacuum, vacuum up-0.092Mpa corrosion resistance of corrosion: general acid, alkali, salt, and organic solvents good performance, apply to the delivery of corrosive gas, liquid and solid-liquid slurry medium.