All the steel company's full compliance with national standards 20 # seamless, steel raw materials alone. At the same time also for the majority of users for a variety of seamless steel pipe material order business. The company sold the pipe to perform GB: GB / T8162-99 structure tube, GB / T8163-99 fluid pipe, GB / T3087-99 low pressure boiler tubes, GB / T5310-95 high-pressure boiler tubes, GB / T6479-2000 fertilizer tube , 27SiMn hydraulic support, high alloy pipe, GB / T9948-85 oil cracking pipe GB9948-88, geological drilling pipe YB235-70, automobile axle casing YB / T5035-96 other standard seamless steel tubes, I The company's existing inventory of more than 10,000 tons, more than 1,000 varieties of any of your purchase. Main products: structural tubes, fluid tubes, boiler tubes, fertilizer tube, alloy pipe, shaped tube, precision cold drawn pipe, large diameter thick-walled pipe, mechanical processing pipe. (Hydraulic support 27SiMn, blast drill pipe, casing J55, N80) and so on. Shandong Liaocheng Polygram Pipe Manufacturing Co. provides you with seamless steel quality inspection methods: 1. Chemical analysis: chemical analysis, instrumental analysis method (C-S-infrared instrument, direct reading spectrometer, zcP etc.). ① infrared C-S instrument: analysis ferroalloy, steel raw materials Q345C seamless steel in the C, S elements. ② direct reading spectrometer: bulk sample of C, Si, Mn, P, S, Cr, Mo, Ni, Cn, A1, W, V, Ti, B, Nb, As, Sn, Sb, Pb, Bi ③N-0 instrument: gas content analysis of N, O 2. Pipe geometry and appearance inspection: ① pipe wall thickness check: micrometer, ultrasonic thickness gauge, both ends of less than 8:00 and recorded. ② pipe diameter, ovality check: calipers, vernier caliper, ring gauge, measure the maximum point, minimum point. ③ length of pipe inspection: steel tape, manual, automatic length measurement. ④ pipe bending tests: ruler, level foot (1m), feeler, thin measuring curvature per meter, length of curvature. ⑤ pipe end beveling angles and blunt edges checks: Square, card board. 3. Steel surface quality inspection: 100% ① artificial visual inspection: lighting conditions, standards, experience, identity, steel turning. ② NDT inspection: a ultrasonic testing UT:. More sensitive to a variety of materials uniform surface and internal defects in material cracks. Standard: GB / T 5777-1996 levels:. C5 level b eddy current testing ET :( electromagnetic induction) mainly on the dot (hole shape) defect sensitive. Shandong Liaocheng Polygram Pipe Co., Ltd. is a company specializing in special steel, special purpose steel research and development, production and sales of large enterprises. Since its inception boiler seamless, high quality service we have seamless, professional quality inspection personnel, equipment to ensure the sales of each product to achieve customer satisfaction, access to many users. Shandong Liaocheng Polygram has focused on forging steel pipe, automotive structural tubes, oil wells, oil and gas pipelines, chemical, marine, boiler, nuclear power and other special pipe. Standards have national standard, Japanese standard, German standard, British standard, American standard and so on. Our products have been widely used in the hydraulic system piping, piping automobile manufacturing, military, engineering machinery, railway locomotive, aerospace, shipbuilding, injection molding machines, die casting machines, machine tools, diesel, petrochemical, power plants, boilers, equipment and other industries. Shandong Liaocheng Polygram steel annual sales of Chengdu Iron and Steel Group, Daye Steel Group, Baotou Steel, Baosteel Group, Anshan Iron and Steel Group, Tianjin Seamless, Xining Te steel, Wuxi Steel Plant, Hengyang Steel Plant and other major steel production all kinds of seamless steel tubes and alloy tube. Has been formed more than 15,000 tons of annual inventory turnover, annual sales volume of over billion. Seamless pipe manufacturers _ _ seamless seamless spot by Polygram Liaocheng Steel Pipe Manufacturing Co., Ltd. Shandong Liaocheng Polygram Pipe Manufacturing Co. (www.lcbljgg.com) (www.lcbljgg.com) (www.sdlcblj.com) (www.bljggzz.com) strong, credible, Shandong Liaocheng wire, tubes, plates and other manufacturing equipment industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Polygram pipe into the brilliant and you work for a better future!