And no uniform definition of the concept of special steel, the special steel is generally considered a special steel type chemical composition (alloyed), using a special production process, with a special organization and performance to meet special needs. Special steels have higher strength and toughness, physical properties, chemical properties, biocompatibility and process properties than ordinary steels. China and Japan, the European Union's definition of special steel is relatively close, the special steel is divided into three categories of high-quality carbon steel, alloy steel, high alloy steel (alloying elements greater than 10%), of which alloy steel and high alloy steel account for special steel output 70%. Main steel grades, special carbon structural steel, carbon tool steel, carbon spring steel, alloy spring steel, alloy structural steel, ball bearing steel, alloy tool steel, high alloy tool steel, high speed tool steel, stainless steel, heat resistant steel , as well as high-temperature alloys, precision alloys, electrothermal alloys, etc. At present, there are nearly 2,000 special steel grades and about 50,000 varieties in the world. In addition to a wide variety of special steels, the specifications also show different characteristics from ordinary steel. In addition to plates, tubes, wires, belts, rods and profiles, there are composites, surface alloys, surface treatments, precision forgings, precision castings , powder metallurgy products, etc.Camping Mat
PD Toys plastic Co., Ltd is OEM & ODM manufacturer of inflatable products in the mainland of China with more 17 years of manufacturing experience. products ranges are Inflatable Toys, inflatable pools, inflatable pool floats, towable tubes, Air Furniture and Promotional Items etc. total have more than 1500 employees (4 factories) related to PVC inflatable products.
Operated under ISO 9001:2015 management system, We had passed factory Audit by Walmart, Taret, Disney ect, also passed all necessary certificates and testing such as ICTI, BSCI, SEMTA,Target FA, NBC Universal, FCCA, SGS, CVS Security, GSV, Disney FAMA ect. We have our own PVC raw materials manufacturing company, all the PVC we produced are compliance with European EN71, American ASTM standard and NON PHTHALATE (6P) standard.
Inflatable Camping Mat,Camping Mat,Inflatable Sleeping Pad,Inflatable Sleeping Mat
P&D Plastic Manufacture Co., Ltd , https://www.jmpoolfloat.com