GB / T17396-2007 (hot-rolled seamless steel hydraulic prop). Mainly for the production of coal and hydraulic support cylinders, columns, and other hydraulic cylinders, columns. The representative material for 20,45,27SiMn like. GB3093-1986 (diesel engine with high-pressure seamless steel pipe). Mainly used for high-pressure diesel injection system tubing. It is generally cold drawn steel tubes, which represents material for 20A. GB / T3639-2007 (drawn or cold rolled precision seamless). Is mainly used for mechanical structure, the carbon pressure equipment, high dimensional accuracy is required, and good surface finish steel. The representative of material 20,45 steel. GB / T3094-1999 (cold drawn seamless steel pipe shaped). Mainly used for the production of structural parts and components, the material for high-quality carbon structural steel and low alloy steel. API SPEC5CT-1999 (casing and tubing specification) pickling steel pipe plant, is the American Petroleum Institute (American Petreleum Instiute called "API") prepared and published all over the world-wide. Where: Casing: from the ground surface into his inner drilling seamless steel pickling, as the wall lining seamless steel pipe pickling process, through the coupling connection between its tubes. The main material for the J55, N80, P110 and other steel grade, as well as anti-hydrogen sulfide corrosion C90, T95 and other steel grade. Its low-grade (J55, N80) for welded steel pipe. Tubing: from the ground surface of the insertion tube inside the casing until the reservoir, by coupling or integral connection between its tubes. Its role then pumping oil through the pipeline will transport oil to the surface. The main material for the J55, N80, P110, and anti-hydrogen sulfide corrosion C90, T95 and other steel grade. Its low-grade (J55, N80) for welded steel pipe. API SPEC 5L-2000 (pipeline specification), the American Petroleum Institute compiled and published around the world-wide. Pickling seamless steel pipe, seamless steel pickling, saponification seamless steel pipe industry by virtue of Liaocheng Limited. Liaocheng virtue Pipe Co., Ltd. (www.meidegc.com) (www.meidegc.com) (www.mdwfg.com) (www.mdggc.com) strong, credible, Liaocheng in Shandong steel industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead virtue of Industry and you work into the brilliant, for a better future!