Seamless ASTM/ASME A/SA 312 & 376 Welded ASTM/ASME A/SA 312 & 358 T304/H T316/H T317/L T321 & T321H T347 & T347H ½ through 36 S/10S Through XXH Wall Thickness Stainless Steel Pipe ASTM/ASME A/SA 403 Seamless & Welded with 100% X-Ray WP304/H WP316/H WP317/L WP321 & WP321H WP347 & WP347H S/10S through XXH Wall Thickness Stainless Steel BW Fittings ASTM/ASME A/SA 182 F304/H F316/H F317/L F321/321H F347/347H Weld Neck, Slip-On, Socket Weld, Threaded & Blind Ring Type Joint (RTJ) & Raised Face Stainless Steel Forged Flanges 150# Through 1500# U.S.