Stainless Steel 347 Pipe Spools

JN ALLOY supplies 347 Stainless Steel Pipe Spools, 347 Stainless Steel Pipe Prefabrication, 347 Stainless Steel Seamless Pipe & Flange, 347 Stainless Steel Piping Fabrication , SS 347 Pre-fabricated Pipe Spools, UNS S34700 Piping System, 1.4550 Stainless Steel Pipes Spools manufacturer.

347 Stainless Steel Pipe Spool is columbium stabilized austenitic stainless steel pipe spool with good general corrosion resistance and somewhat better resistance in strong oxidizing conditions than 321. It has excellent resistance to intergranular corrosion after exposure to temperatures in the chromium carbide precipitation range of 800 – 1500°F (427 – 816°C). The alloy has good oxidation resistance and creep strength to 1500°F (816°C). It also possesses good low temperature toughness. 347 Stainless Steel Pipe Spoo is applied to boiler, heat exchanger, car and aircraft exhaust, chemical equipment etc. As a higher grade from AISI 321H, the intergranular corrosion of 347H is achieved through the use of niobium (Nb) as a stabilizing element to maximize this feature. SS 347 has a good mechanical properties welding performance, excellent resistance to intergranular corrosion .

They are divided into grades that define their characteristics. Stainless Steel 347 Pipe Spool is one amongst them that is stabilized by adding columbium. The addition of columbium to the ASTM A312 Gr TP347 makes best suited for applications that work under high temperature and are prone to oxidation. ASTM A312 TP347 is available in the size range of ½ inches to 24 inches and can be manufactured using electric resistance weld, electric fusion weld, or can be seamless. SA 312 TP 347 that are made using electric fusion are available in the size range of 6 inches to 100 inches. They offer good creep strength even at elevated temperatures. 347 Stainless Steel Pipe Spool is mostly used in marine environments, marine architecture, and in equipment and laboratory furniture.

Specification of Stainless Steel 347 Pipe Spool

Specifications	ASTM A312 / ASME SA312
Dimensional specification	ANSI/ASME B36.19M, ANSI/ASME B36.10M
Size	1 / 8" NB - 24" NB
Outside Diameter	6.00 mm OD up to 914.4 mm OD, Sizes up to 24" NB available Ex-stock, OD Size Steel Tubes available Ex-stock
Manufacturing Shapes	Hydraulic, Round, Square, Hex, Honed
Manufacturing Techniques	Normalized & as Rolled
Schedule Thickness Range	SCH 5, SCH10, SCH 40, SCH 80, SCH 80S, SCH 160, SCH XXS, SCH XS
Surface Finish	No.1, No.4, No.8 Mirror Finish, 2B
Value Added Services	Cutting, Beveling, Polishing, Threading, Destructive, Non Destructive, Ultrasonic Testing
Inspection and Test Reports	EN 10204 3.1, Mill Test Certificates, Chemical Reports, PMI Test Reports, Mechanical Reports, Third Party Inspection, NABL Approved Lab, Visual Inspection, Destructive Test and Non Destructive Test Reports
Outside Finish	2B, No.4, No.1, No.8 Mirror Finish for Stainless Steel Seamless Pipes, Finish as per customer Requirements
Delivery Condition	Annealed and Pickled, Polished, Bright Annealed, Cold Drawn
Heat Treatment	Normalized, Normalized & Tempered
Packing of Seamless Pipes	Packed in Wooden Boxes, Plastic Bags, Steel Strips Bundled, or as per Customers Requests
Specials	Sizes and Specifications other than above can be on request

Applications of 347 Stainless Steel Pipe Spool

Thanks to its unique properties, 347 stainless steel pipe spool is applied in industries that demand high-temperature resistance and corrosion durability.
Aerospace Components: Including air exhaust systems, collector rings and other components at high temperature exposure.
Chemical Processing: Well suited to handle corrosive materials and maintain structural integrity when exposed to harsh environments.
Food Processing Equipment: Its non-magnetic, corrosion-resistant properties make it suitable for food handling equipment and storage tanks.
Boiler Tubes and Heat Exchangers: Used where temperatures can exceed 1000°F, 347 stainless steel pipe spool ensures long-lasting performance in extreme heat.
Power Generation: Steam piping, heat shields, and turbines benefit from 347 pipe spool's ability to maintain strength at elevated temperatures.