Premium Seamless Stainless Steel Heat Exchanger Tube ASTM A268

• Customization: Available
• Application: Chemical Industry, Construction Industry, Oil and Gas Industry, Building Material
• Certification: CE, ISO9001
• Model NO.: ASTM A268 Tp410/TP409/TP444/TP439 SMLS SS Pipe
• End Connection: Beveled End
• Length: Max 50m
• Outer Diameter: 3.18-810mm
• Wall Thickness: 0.2-40mm
• Steel Grade: Tp410, Tp405, Tp420, Tp430, Tp430ti, Tp403, Tp409
• Size: 1/4"-4"/ Customized
• Thickness: 1-150mm/ Customized
• Technique: Hot Rolled/Cold Drawn
• Shape: Round/Customized
• Process: Polished/Solution Treatment
• Condition: Hot Finished/Cold Finished
• End: Plain End/Bevel End
• Usage: Heat Transfer
• Test: BV, SGS Is Available
• Stock: Size Can Customized
• Processing: Customized
• Used: Factory, Decoration, Food
• Packing: Standard Export Packing
• Delivery Time: 10-30 Working Days
• Transport Package: Woven Bag/Wooden Case
• Specification: SCH 5S-SCH160
• Trademark: EZS
• Origin: China
• Production Capacity: 10, 000, 000 Kgs/Year

Product Description

Product Description

 

Product Name	ASTM A268 Tp410/TP409/TP444/TP439 Seamless Stainless Steel Pipe Heat Exchanger Tube
Size	OD	3.18-810mm
	Thickness	0.2-40mm
	Max Length	50m
Process	Cold drawn, Cold rolled
Usage	Gas Industry, Oilfield, Thermal power, Oil industry, Shipbuilding, Petrochemical, Tanker, Nuclear , etc
Surface	Pickling and annealing,pickling and annealing+polishing+ EP(Electricity polish)
End	Plain, Beveled with caps
Package	Reinforced plywood case bysted angle bar,  Playwood cased Plastic bags packing, Condenser,  heat exchanger tube packing,  U-tube packed with wooden cases.
Inspection	With Hydraulic Testing, Ultrasonic testing or X-ray Test
TPI	TUV, SGS, BV, Lloyd's, etc.
Payment:	L/C at sight, L/C 180 days, T/T, D/P, OA, Western Union,
Port of Shipment	Shanghai port in China

 

 

 

ASTM A268 specification covers standard specification for a number of grades of nominal-wall-thickness, welded ferritic and martensitic stainless steel tubing for general corrosion-resisting and high-temperature service.

ASTM A268 tubes shall be made by seamless and welded process with no filler metal added.As a final heat treatment ASTM A268 Tubing shall be reheated to temperature of 1200°F [650° C] or higher and cooled to meet the requirements of specification.SS 410 Welded Tubes stainless steel is soaked at 649-760°C (1200-1400°F) and then cooled in air.

Shielded fusion and resistance methods are recommended for welding grade Stainless Steel 430 Seamless Tubes stainless steel.Oxyacetylene welding is not suitable for this stainless steel grade.Hardening of ASTM A268 tp439 Seamless Tubing is controlled by the use of 405 Cb electrodes that contain columbium.

Ductility of AISI 405 Seamless Tubes is maximized by post weld annealing.ASME SA268 Stainless Steel 409 Welded Tubes are soaked at 817-871°C (1500-1600°F) and the temperature is then increased to 1038-1121°C (1900-2050°F). ASTM A268 Stainless Steel 429 Seamless Tubes can be hardened by soaking at 982-1010°C (1800-1850°F) and then oil quenched.

 

Standard	ASTM A268, ASME SA268
Grade	TP410/TP405/TP420/TP430/TP430Ti/TP403/TP409/TP444/TP439/TP446,etc.
Technique	Seamless/Welded
Application	Heat Exchanger, Heater, Condenser, Machining, Bearing Machining, API Service…
Marking	LOGO, Standard, Grade, Size, Heat Number.

 

ASTM A268 Chemical Composition

Grade	TP 405	TP 410	TP 429	TP 430	TP 443	TP 446-1	TP 446-2A	…	TP 409
UNS DesignationB	S40500	S41000	S42900	S43000	S44300	S44600	S44600	S40800	S40900
Element	Composition, %
C, max	0.18	0.15	0.12	0.12	0.20	0.20	0.12	0.08	0.08
Mn, max	1.00	1.00	1.00	1.00	1.00	1.50	1.50	1.00	1.00
P, max	0.040	0.040	0.040	0.040	0.040	0.040	0.040	0.045	0.045
S, max	0.030	0.030	0.030	0.030	0.030	0.030	0.030	0.045	0.045
Si, max	0.75	0.75	0.75	0.75	0.75	0.75	0.75	1.00	1.00
Ni	0.50max	0.50max	0.50max	0.50max	0.50max	0.50max	0.50max	0.80max	0.50max
Cr	11.5-13.5	11.5-13.5	14.0-16.0	16.0-18.0	18.0-23.0	23.0-30.0	23.0-30.0	11.5-13.0	10.50-11.75
Mo	…	…	…	…	…	…	…	…	…
Al	0.10-0.30	…	…	…	…	…	…	…	…
Cu	…	…	…	…	0.90-0.25	…	…	…	…
N	…	…	…	…	…	0.10-0.25	0.10-0.25	…	…
Ti	…	…	…	…	…	…	…	12xC min; 1.10max	6xC min; 0.75max

 

    

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