welding neck flange1.Best quality & price flange 2.Size:15~600mm ... 4.Can do special design ProductFlange ,Steel flange,Carbon steel,welding neck flangeSize15mm ~ 600mmMaterialCarbon steel(20#,35#,45# etc),Stainless steel ... other items in one order.Product Description:High neck butt welding flange makes two pipes, fittings or equipments each fixed at ...