1968 McDonnell Aircraft developed the technology to 360 degree radial swage compression tube coupling for F- 4 Fighter jets.They licensed DMC of California to manufacture the fitting.In 1978 DMC patent system called PYPLOK DMC entered into Petrochemical and other industrial markets. There was an ownership change in 2004.DMC’s new management decided to focus on their core aerospace and power business so they offered the PYPLOK line to Tube-Mac.In January 2007 the sale was completed.                Tube-Mac took over the marketing, design and          manufacture of The PYPLOK PYPLOK® Fittings can be used on stainless steel, copper nickel and carbon steel pipe or tube.  Viton O-rings  -65°F to 400°F (-54°C to 205°C)           

乔治费歇尔塑料管路具有重量轻，弹性好，耐化学腐蚀，绝热效果好，绝缘以及安装方便等特点。材质有PPR,PB,PVC-U,PVU-C,PE,PE-RT ,ABS等多种塑料管，GF产品可以应用于生活区黑灰水，冷热水，空调系统，水处理，压载舱和生活区，已经得到了广大船厂，船级社和船东的认可，在国内船厂和石油平台有广泛应用。GF在国内有生产线和保税仓库，可以及时的提供船厂所急需。GF管路系统经过CCS,ABS,BV,DNV,LR等各大船级社认证 。