... *3.7 , 50*4.6 , 63*5.8 .2---S4 PN1.6 Mpa : 20*2.3 , 25*2.8 , 32*3.6 , 40*4.5 ... , 50*5.6 , 63*7.1 .3---S3.2 PN2.0Mpa: 20*2.8 , 25*3.5 , 32*4.4 , 40*5 ... .5 , 50*6.9 , 63*8.7.4---S2.5 PN2 ... .5Mpa: 20*3.4 , 25*4.2 , 32*5.4 , 40 ... *6.7 , 50*8.4 , 63*10.5.(For home use ...