... Marerial:Q235,A105,20#,16Mn 316 316L ETC. 3.Standard:DIN JIS BS UNI EN1092-1KS Flanges of welding neck ... 150 to 900 lbs are in accordance with MSS SP 44 standard. Flanges with long welding neck are from classes 150 ... 24" and from 300 to 2500 lbs are in accordance with ANSI B 16.36. Blind, slip on, welding ... . Flanges from 2kg to 210 kg are in accordance with JIS. Flanges according to API 605/ASME B16.47. ...