SINO pipe fitting cooperation as SINO Holdings Branch Company is famous for the good quality and responsibility attitude to each mold. We are China famous brand for ‍‍customized pipe fitting molds design and manufacture.

As we all know, normally the pipe fitting molds apply cold runner for the material strict temperature requirement. The runner diameter is bigger than other product. So what’s kind’scold runner you choose for different type pipe fitting? Compared the tunnelgate and edge gate / big gate, you will find their own characteristics and help you choose the suitable gate.

1.They areall cold runners and will have waste material.

2.The tunnelgate can auto separate and the product surface is good.

While as this gate is small that the cycle time will long, the product may short molding, the holding pressure needs tronger, there will have material marks around the gate area (injection pressure is too high)

3.About theedge gate, the dimension is larger and short cycle time.

This gate needs to be cut by men hand or robot cutting equipments increase the production cost. And there will have gate marks on pipe fitting surface.

From above characteristics, we always adopt edge gate or big gate for product diameter over than 100mm. Otherwise, we adopt tunnel gate.

Warmly welcome your contact for not only pipe fitting molds, also other plastic product injection molds.

Posted by Ms. Helen

Skype: sino.groupe10

Email: servic19@dakumar.com

Whatsapp/ Wechat: 0086 15858625783