1) Type: Long Radius 2) Material: A403 WP304, WP304L, WP316, WP316L, WP321, WP309, WP310, WP904, etc. 3) Standard: ASME/ANSI B16.9, MSS SP-43, DIN, JIS 4) Size: Seamless 1/2"-24", Welded 26"-72" 5) Special design available 6. Application: Petroleum, chamical, power, gas, metallugy, shipbuilding, construction. etc.