The Carbon Steel Butt-Welding fittings according to ANSI B16.9/B16.11/B16.28,DIN2605-2942,JIS,ISO etc. standards, Products:the long and short Elbow, Staight and reducing Tees, concentric and Reducers,Bends, Caps and Crossover (four channel). Materials: carbon steel and stainless steelWall thickness: SCH10/SCH20/SCH30/STD/SCH40/SCH80 etc.Specifications: 1/2''-48''. Packing:In Veneer Wooden cases or Pallet Now, we are willing to cooperate with your esteemed company through supplying you superior high quality products and competitive pricing. Looking forward to your kind inquiry.Thank you and Bestregards Ms.Helen Yao