... Facing Raised Face/Flat Face/Ring join Pressure Class 150-2500LB, 5-30K,PN0 Grade :304.316.316L,904L Standard:GB ... Face/Ring joinMaterial304,316,304L,316L.A105,Q235, etcPressure Class150-2500LB, 5-30K,PN0.25- 32MpaSurfaceLight Oiled/Galvanization/Paint stainless steel ...