1. Product Overview
Our 90 degree seamless stainless steel butt weld elbow is a critical industrial pipe fitting for changing fluid direction by 90° in piping systems. Made from 304 / 316L stainless steel, manufactured in accordance with ASME B16.9 & ASTM A403. It features uniform wall thickness, high pressure resistance, stable performance and excellent corrosion resistance. Widely used in petroleum, natural gas, chemical industry, water treatment, power and ship pipeline projects.
2:Key Features
1.Seamless forming, no internal weld seam, suitable for high pressure pipeline
2.Strictly comply with ASME B16.9, ASTM A403 industrial standards
3.Uniform wall thickness, smooth inner flow channel, low flow resistance
4.Strong corrosion resistance for acid, alkali, salt and marine environment
5.Long radius LR (1.5D) standard, SR short radius optional
6.Sand blasting / pickling passivation surface, anti-rust and durable
3:Available Materials
SS304, SS316L, SS304L, 321, 2205 Duplex Stainless Steel
4:Manufacturing Process
Raw material incoming inspection → Cutting → Hot push forming → Trimming → Heat treatment → Pickling & passivation / Sand blasting → Dimension inspection → Marking
5.Quality Control
1:PMI spectrum test for material verification per batch
2:Dimension inspection: diameter, wall thickness, bending radius, angle
3:Visual inspection for crack, fold, scratch, pit and deformation
4:Hydrostatic pressure test & NDT UT/MT non-destructive testing on sampling
5:Surface inspection for passivation and sandblasting quality
6. Applications
Oil & gas transmission, chemical processing, water treatment, power plant pipeline, marine piping, mining pipeline, industrial fluid delivery
7.Why Choose Us
1：Direct manufacturer, competitive factory price without middleman
2：Rich experience in ASME standard stainless steel pipe fittings
3：Complete test reports: MTR, NDT certificate, PMI report
4：Standard sizes in stock, fast delivery
5：Accept third-party inspection before shipment
6：Support OEM & ODM customized drawing production
7：Strict QC procedure, 100% visual inspection before packing
8：One-stop piping fittings supporting service
8：Custom Service
· Custom Drawing
· Non-standard Dimensions
· Special Materials
· Logo Marking
· Special Packaging
· Small MOQ
· OEM Service
9. Packaging & Shipping
Each elbow wrapped with anti-rust paper, packed in cartons, plywood crates for sea freight. Support sea, air and express shipping. Anti-rust treatment to avoid corrosion and scratch during transit.
FAQ
1:How long is the custom lead time for stainless steel flanges in Wenzhou?
— 8 to 10 working days
2:What is the fastest delivery time?
— 3 working days
3:Do you support non-standard custom flanges?
— Yes, we do.
4:Can you process special sizes?
— Yes. Max processing size: 4000 mm, Min processing size: 30 mm.
5:Do you have stainless steel flanges of standard sizes in stock?
— Yes.
6:Can we customize flanges based on customer drawings or samples?
— Yes.
7:Will material test certificates and inspection reports be provided for the purchased flanges?
— Yes, they will.
8:Is there a quality warranty for the flange products?
— Yes.
9:How to handle quality defects if they occur?
— Product return and exchange available.
