PPR is a random copolymerized polypropylene synthesized by gas phase method (PP and PE). Its structural characteristics are that PE molecules are randomly linked in PP molecules with molecular weights ranging from 300,000 to 800,000. Pipes produced from PPR raw materials, also known as random copolymer polypropylene pipes, are plastic pipe products developed in the late 1980s and early 1990s. With its excellent performance and wide application fields, it has occupied a place in the plastic pipe market and is recognized as a green product. However, in recent years, the market operation, the above PPR plastic pipe quality problem analysis examples have found that there are many problems in the PPR pipe market, these problems have largely restricted the benign development of PPR pipe.
Stainless Steel Roller Shutter Door
Using advanced 201 stainless steel sheet, precision roll forming production process.
User-friendly design, stylish,durable ,safe anti-theft ,lighting, ventilation ,aesthetic ,practical, thermal insulation and free adjustable ,anti-peeping.
Intelligent control, multiply driving modes.
Variety of colors and styles optional.
Providing a comprehensive,specialized system solutions as users different requirements.
Integrated protection and decorative features together,the best replacement of traditional theft network security replacement; flexible way open ways, supporting hand control, group control. The door could be your safe rescue channel when in emergency.
Stainless Steel Roller Shutter Door,Remote Control Roller Shutter Door,Stainless Steel Grille Roller Shutter Door,Electric Stainless Steel Roller Shutter Door
Shenzhen Hongfa Automatic Door Co., Ltd. , https://www.pvchighspeeddoor.com