Sinoholdings have a branch of Pastic-pipe fitting specialized in manufacture all kinds of pipe fitting mould.Including PPR,PE,ABS…pipe fitting mould.
Regard the PVC plastic material, the steel material need has corrosion resistance. At this period, Pasticmould Co.,Ltd always using 2316,Stavax S136,Stavax S420.
But considering the price,S420 is much expensive, so the most of steel material for PVC products we used is 2316.If you want the mold life longer,S136 will be a good choice.
For information, kindly contact me.