ASTM A105N/A182 F304L/F316L Butt Weld 90° Weldolet Pipe Fittings Supplier

So you're looking at weldolets for high-presure branch connection, and we've been supplying these for years across oil and gas, power gen, and chemical plants — the MSS SP-97 standdard is pretty much the industry baseline for this geometry, and we stock A105N carbon steel along with F304L and F316L stainless variants, though the 316L is better if you're dealing with chlorides or sour service. 2. The 90-degree butt weld design handles thermal cycling well, and you'll get a full-penetration weld that holds up at temperatures from -20°C up to around 600°C or so, but honestly for sustained service above 500°C the A105N starts to lose some strength — we usually recommend the stainlss grades for those hotter loops. 3. Surfce treatment depends on what you're doing with them; anti-rust oil is standard for carbon steel, but if they're going offshore or into a corrosive enviroment, hot-dip galvanized adds maybe 3-4 weeks to lead time (check with us on that). 4. We can do sizes from 1/8" all the way up to 24", and the MOQ is typically 50 pieces for standard sizes, but for custom OEM/ODM runs we'll work with you on that — just send the drawing or spec. 5. One thing most buyers don't think to ask is that the weld prep bevel comes standard with a 37.5-degree angle, but we can adjust it if your pipe schedule is unusual or if you're using a specific welding procedure. 6. Anyway, lead time is roughly 25-35 days from order, and we include a COA with every batch — HPLC and mechanicals are on there, though we don't test every single piece for ppm unless you request it.