The letter R comes from the German Rohr, which means “tube”. R thread is a series, and the common ones are Rp, Rc, R1 and R2. Details are as follows:

The options for ball valves are seemingly endless. To select a ball valve, decisions have to be made. Which seat material? What kind of end connections? Full, reduced, or standard port ball? 2-way or multiport? Finally, how many pieces?

Investment, or lost-wax, casting uses a disposable wax pattern for each cast part. The wax is injected directly into a mold, removed, then coated with refractory material and a binding agent, usually in five stages to build up a thick shell.

We can provide normal packing and customized packing for stainless steel fittings and ball valves ,and we promise all the packing is good enough to avoid damage during the shipment. Normal packing of stainless steel fittings and ball valves : plastic bag + carton+pallet/wooden box The products are packed in the plastic bag and then into