Shandong Jingyi Metal Products Co., Ltd. is a modern enterprise specializing in the production of spiral pipes, thick-walled spiral pipes, plate and coil steel pipes, steel plate spiral pipes, and large-diameter spiral pipes. We possess 4 large-diameter thick-walled spiral pipe production lines, capable of producing sizes from Φ219 to Φ3500mm and wall thicknesses from 6 to 300mm. The materials used in our large-scale spiral pipes and thick-walled spiral pipes include Q235B, Q345B, 20#, 45#, 16Mn, L245, L290, L360, ASTM A106B, ASTM A53 B, API 5L GR B, JIS G3454 STPG370, JIS G3452 SGP, and JIS G3444 STK400.Our products comply with standards such as GB/T50205-2001, GB/T3092-2001, etc. Large diameter coiled pipes and thick-walled coiled pipes are widely used in oil, chemical, natural gas transportation, pile driving, and urban water supply, heating, and gas supply projects. With a good reputation, superior products, strong capabilities, and competitive prices, the company is ren...