... CARBON STEEL FLANGE DIN2633 WELDING NECK Material: C22.8, ST37.2, P235GH, S235JR, A105 Size: 1"--64" Forged carbon steel ... flange DIN2633 PN16 Welding NeckMaterial: C22.8, ST37.2, P235GH, S235JR, A105Size: 1/2" to 64"Coating: anti-rust oil, transparent yellow ... threaded, lap-joint, socket weldingMaterial: carbon steel, stainless steelSize: 1/2" to 64"sealing surface type: FF(flat face), RF(raised ...