stainless & duplex steel  range 15 nb up to 1200 nb in sch 5s , 10s , 10, 20 , 40s , 40 , std , 60 , 80s , 80 , xs , 100 , 120 , 140 , 160 & xxs form seamless / erw / welded in round & square . stainless steel astm / asme sa 312 gr. tp 304 , 304l , 304h, 309s , 309h , 310s, 310h , 316 , 316ti , 316h , 316 ln , 317 , 317l , 321 , 321h , 347 , 347 h , 904l . astm / asme sa 358 cl 1 & cl 3 gr . 304 , 304l , 304h, 309s , 309h , 310s, 310h , 316 , 316h , 321 , 321h , 347 . duplex steel astm / asme sa 790 uns no s 31803 , s 32205 , s 32550 , s 32750 , s 32760 .  carbon & alloy steel steel  range 15 nb up to 1200 nb in sch 5s , 10s , 10, 20 , 40s , 40 , std , 60 , 80s , 80 , xs , 100 , 120 , 140 , 160 & xxs form seamless / erw / welded in round & square . carbon steel astm / asme a 53 gr. a & b , astm a 106 gr. a , b & c . api 5l gr. b , api 5l x 42 , x 46 , x 52 , x 60 , x 65 & x 70 . astm / asme a 691 gra , b & c alloy steel astm / asme a 335 grp 1 , p 5 , p 9 , p 11 , p 12 , p 22 , p 23 , p 91 astm / asme a 691 gr 1 cr , 1 1/4 cr , 2 1/4 cr , 5 cr , 9cr , 91  nickel & copper alloy   range 15 nb up to 1200 nb in sch 5s , 10s , 10, 20 , 40s , 40 , std , 60 , 80s , 80 , xs , 100 , 120 , 140 , 160 & xxs form seamless / erw / welded in round & square . nickel alloy astm / asme sb 163 uns 2200 ( nickel 200 ) astm / asme sb 163 uns 2201 (nickel 201 ), astm / asme sb 163 / 165 uns 4400 (monel 400 ) astm / asme sb 464 uns 8020 ( alloy 20 / 20 cb 3 ), astm / asme sb 704/705 uns 8825 inconel (825) astm / asme sb 167 / 517 uns 6600 (inconel 600 ) astm / asme sb 167 uns 6601 ( inconel 601 ), astm / asme sb 704 /705 uns 6625 (inconel 625) astm / asme sb 619/622/626 uns 10276 ( hastelloy c 276 ) copper alloy astm / asme sb 111 uns no. c 10100 , 10200 , 10300 , 10800 , 12000, 12200, 70600 , 71500 . astm / asme sb 466 uns no. c 70600 ( cu -ni- 90/10) , c 71500 ( cu -ni- 70/30)   Â