CNB grooved end fittings are ductile iron and stainless steel
depending on style and size. Designed specifically for use in grooved
piping systems, fittings are painted orange and grooved or with
shoulders conforming to standard steel pipe outer diameters. When
connecting wafer or lug-type butterfly valve CNB grooved end
fittings with adapters, users must check disc clearance dimensions
with the I.D. dimensions of the fitting.

Specifications:
1) Nominal size: DN40-200
2) Material: accords to GB11352-89 carbon steel
3) According to GB1348-88 ductile iron
4) Working pressure: PN2.5Mpa / PN1.6Mpa
5) Coating: rust-inhibiting paint (standard), please consult us for
other specific coatings)