... Class900, Class1500, Class2500, Wnrf, Sorf, Blrf, Thrf, Swrf, Ljrf Carbon Steel FlangeDin2573 Pn6 Slip-On, Din2576 Pn10 Slip-On, Din2543 Pn16 ... Shape: Equal Usage: connecting pipe line and keep its leakproofness; convenient for replacing pipe line; easy to separate and check the ... situation of pipe line; easy to seal pipe line, such as oil, petroleum, gas, chemical industry, ...