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Bright Annealed ASTM A269 TP304 Stainless Steel Seamless Tubes For Evaporator 4"

China Bright Annealed ASTM A269 TP304 Stainless Steel Seamless Tubes For Evaporator 4"

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Bright Annealed ASTM A269 TP304 Stainless Steel Seamless Tubes For Evaporator 4"

MOQ： 100 KGS
Price： Negotiable
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Payment Terms	T/T, L/C
Supply Ability	According to Clients' Requirement
Delivery Time	15 - 60 Work Days
Packaging Details	Plywood Case
Specification	ASTM A269, ASME SA269
Raw Material Grade	TP304, TP304L, TP316, TP316L, TP316Ti, TP310S, TP310H, TP317, TP321, TP321H, TP347, TP347H, TP310S, Etc.
Type	Seamless, Welded
Outer Diameter	6.35-152.4mm
Wall Thickness	0.5-3.4 mm
Length Per Piece	6 Meter Or As The Client's Request
Tube Ends	Plain Ends, Bevelled Ends, Threaded Ends
Surface Finish	Bright Annealed, Pickled and Annealed, Mechanical Polished, Electropolished
Brand Name	YUHONG
Model Number	TP304, TP304L, TP316, TP316L, TP316Ti, TP310S, TP310H, TP317, TP321, TP321H, TP347, TP347H, TP310S, Etc.
Certification	ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2015
Place of Origin	China

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Product Specification


Payment Terms	T/T, L/C	Supply Ability	According to Clients' Requirement
Delivery Time	15 - 60 Work Days	Packaging Details	Plywood Case
Specification	ASTM A269, ASME SA269	Raw Material Grade	TP304, TP304L, TP316, TP316L, TP316Ti, TP310S, TP310H, TP317, TP321, TP321H, TP347, TP347H, TP310S, Etc.
Type	Seamless, Welded	Outer Diameter	6.35-152.4mm
Wall Thickness	0.5-3.4 mm	Length Per Piece	6 Meter Or As The Client's Request
Tube Ends	Plain Ends, Bevelled Ends, Threaded Ends	Surface Finish	Bright Annealed, Pickled and Annealed, Mechanical Polished, Electropolished
Brand Name	YUHONG	Model Number	TP304, TP304L, TP316, TP316L, TP316Ti, TP310S, TP310H, TP317, TP321, TP321H, TP347, TP347H, TP310S, Etc.
Certification	ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2015	Place of Origin	China
High Light	ASTM A269 TP304 stainless steel tubes ，4 inch stainless steel seamless tubes ，18BWG stainless steel evaporator tubes

Bright Annealed ASTM A269 TP304 Stainless Steel Seamless Tubes For Evaporator 4" 18BWG

ASTM A269 TP304 bright annealed tubes are austenitic stainless steel tubes, which can be seamless or welded. These stainless steel tubes have different surface finishes, such as bright annealed, pickled and annealed, and so on, which can be made according to clients’ requests. They are widely used in applications, like industrial fluid application, food processing plant, evaporator, chemical industry, sugar refinery, water cooling tower, instrumentation, hydraulic lines, and heat exchanger tube, etc.. YUHONG GROUP mainly manufactures ASTM A269 TP304 stainless steel tubes from 6mm diameter to 152.4mm diameter. And the wall thickness can be made from 0.5mm to 3.4mm. In addition to SS304 material, we can also provide TP304L, TP304H, TP316, TP316, TP316L, TP316Ti, TP317, TP347, TP347H, TP321, TP310S, etc..

Different Surface Finishes:

Bright Annealed (BA): The tube is annealed in a controlled atmosphere furnace (bright annealing furnace). This prevents oxidation and scaling. The result is a smooth, shiny, mirror-like surface. This finish does not require pickling.
Pickled and Annealed (AP): The tube is annealed in a standard air furnace, which creates a black oxide scale. This scale is then removed by pickling (acid bath), leaving a matte grey, dull, but clean surface.
Polished (Mechanical Polish): Starting from a pickled or bright annealed base, the tube is mechanically polished to achieve specific grit finishes (e.g., 180 grit, 320 grit, 400 grit, 600 grit, etc.) for aesthetic or ultra-clean applications.

Chemical Composition (ASTM A269 TP304 / UNS S30400):

Element	Composition, %
Carbon	0.08 max
Manganese	2.00 max
Phosphorus	0.045 max
Sulfur	0.030 max
Silicon	1.00 max
Chromium	18.0 – 20.0
Nickel	8.0 – 11.0
Iron	Balance

Mechanical Properties:

Tensile Strength (min)	75,000 psi (515 MPa)
Yield Strength (min)	30,000 psi (205 MPa)
Elongation (in 2 inches, min)	35%

Key Advantages and Features of TP304 Seamless Tubes:

Excellent Weldability and Formability: The 18-8 chromium-nickel composition makes it easy to fabricate.
Superior Corrosion Resistance: Offers good resistance to oxidation and a wide range of corrosive media, including foodstuffs, organic chemicals, and atmospheric exposure.
Hygienic Surface (BA): The bright annealed finish is extremely smooth and non-porous, preventing bacterial growth and making it easy to clean—critical for pharmaceutical and food processing.
Excellent Low-Temperature Toughness: Austenitic stainless steels retain their toughness at cryogenic temperatures.
High Ductility: The 35% elongation minimum allows for easy bending and flaring operations without cracking.

Applications of SS304 Seamless Tubes:

Instrumentation: Sensing lines for pressure, temperature, and flow transmitters.
Hydraulic & Pneumatic Systems: High-pressure fluid transmission lines in industrial machinery.
Pharmaceutical & Biotechnology: Transport of clean steam, purified water, and process fluids where hygiene is paramount.
Food & Beverage Processing: Dairy lines, breweries, and food handling equipment.
Chemical Processing: Transfer lines for mild chemicals and solvents.
Heat Exchangers: Small diameter tubing for heat transfer applications.
Aerospace & Automotive: Fuel and oil lines.
General Engineering: Bearing tubes, mechanical parts, and shafts.

Company Details

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Business Type:

Manufacturer,Distributor/Wholesaler,Importer,Exporter,Trading Company,Seller,Other 
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Year Established:

2007 
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Total Annual:

50M-70M
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Employee Number:

50~850 
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Ecer Certification：

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Yuhong Group is one of the large scale group company in China, more than 35 years experience in the international market, providing high-quality services to over 3000 customers, end user which like Aramco, Petrobras, Pemex, Petronas, Ecopetro, Petroecuador, …. till now Yuhong Grou... Yuhong Group is one of the large scale group company in China, more than 35 years experience in the international market, providing high-quality services to over 3000 customers, end user which like Aramco, Petrobras, Pemex, Petronas, Ecopetro, Petroecuador, …. till now Yuhong Grou...

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