Injection moulded, embedded resistance wire by CNC machine,black HDPE100 material,working voltage 39,5V(dn450mm and above 60V), sizes range from dn20mm to dn560mm, pressure rating major for SDR11(dn355mm and above for SDR17).
Large butterfly valve is mainly used in the main line and large pipeline, commonly used clip butterfly valve, welding butterfly valve and flange butterfly valve three kinds.
Hybrid compound binder is used in the powerful grinding wheel for slotting. The single side cutting depth of the wheel can reach 6 mm. Under this cutting depth, the feed speed of the wheel can reach 90-120 mm/min.