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ASTM A249,ASTM A270,BS 4825-1,DIN 11850,EN 10357,NF A49-151/249 SANITARY TUBE

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Product Description

PHYSICAL DIMENSIONS AND TEST PRESSURE
Outside diameter nominal mm	Outside diameter tolerance mm	Wall thickness nominal mm	Wall thickness tolerance mm	Cut Length tolerance mm	Test Pressure Mpa
12.7	± 0.13	1.60	+ nill. - 0.10	- 0, + 3	26.9
19.34	± 0.13	1.60	+ nill. - 0.10	- 0, + 3	18.00
25.4	± 0.13	1.60	+ nill. - 0.10	- 0, + 3	13.5
31.8	± 0.13	1.60	+ nill. - 0.10	- 0, + 3	10.8
38.1	± 0.25	1.60	+ nill. - 0.10	- 0, + 3	9.0
50.8	± 0.25	1.60	+ nill. - 0.10	- 0, + 3	6.7
63.5	± 0.25	1.60	+ nill. - 0.10	- 0, + 3	5.4
76.2	± 0.25	1.60	+ nill. - 0.10	- 0, + 3	4.5
101.6	± 0.38	1.60	+ nill. - 0.10	- 0, + 3	3.4
127.0	± 0.38	1.60	+ nill. - 0.10	- 0, + 3	2.7
152.4	± 0.76	1.60	+ nill. - 0.10	- 0, + 3	2.2
203.2	± 0.76	1.60	+ nill. - 0.10	- 0, + 3	2.2

Specifications︰

Sanitary Tubing
Sanitary tubing is a kind of tubing having a special surface, commonly polishing process is carried out for high performance tubing, sanitary tubing is for use in the bakery, beverage, dairy, food, biotechnology or pharmaceutical Industries.
Tubing should conform to ASTM A270 and 3A sanitary standards requirement, in both welded and seamless types.
Stainless steel is a ideal material for sanitary tubing, it has good corrosion resistance with high strength, that is basic properties of stainless steel, tubing is easy to clean outside and inside, removing residues, and stainless steel material is no harmful to human healthy.
Common stainless steel grades have TP304, TP304L, TP316L, other grades are available for various applications.
Sanitary Tubing Dimensions
Tubing sizes are 1/2 inch to 8 inch in outside diameter, common sizes have 12.7 mm, 19.05 mm, 25.4 mm, 38.1 mm, 50.8 mm, 63.5 mm, 76.2 mm, 101.6 mm, 152 mm, 152.4 mm, 203.2 mm.
Wall thickness sizes have 1.0 mm, 1.25 mm, 1.5 mm, 1.65 mm, 2.0 mm, 2.5 mm, there are a wide range sizes for option.
Polishing Tubing
To achieve smooth surface, tubing always is needed to make polishing process, mechanical polishing is most used method to smooth tubing surface.
Roughness is measured using Ra value, common Ra value is less than 0.8 μm for outside and inside surface, after polishing, roughness value reaches 0.2 μm.
Polishing grit contains 180, 320, 400, mirror finish.
Sanitary Tubing Quality
Welded tubes are main types for sanitary purpose, we use TIG automatic welding method to manufacture tubing, then annealed, minimum temperature is 1040 degree C, rapidly cooled to achieve the maximum cold finish effect
Each tubing should be conducted eddy current testing to ensure high quality tubing, other tests conform to ASTM A270 specification.
Stainless steel sanitary tubing is to joint with other components, fittings, tees, valves.

Standard Met︰

ASTM A268/A268M, ASME SA268/SA268M Specification Seamless and welded ferritic and martensitic stainless steel tubing for general service
ASTM A269/A269M, ASME SA269/SA269M Specification for Seamless and Welded Austenitic Stainless Steel Tubing for General Service
ASTM A 270 Specification for Seamless and Welded Austenitic and Ferritic/Austenitic Stainless Steel Sanitary Tubing
ASTM A312/A312M, ASME SA312/SA312M Specification for Seamless and Welded Austenitic Stainless Steel Pipes
ASTM A 358/A 358M Specification for Electric-Fusion-Welded Austenitic Chromium-Nickel Alloy Steel Pipe for High-Temperature Service
DIN 11850 Tubes for the food, chemical and pharmaceutical industry - Stainless steel tubes - Dimensions,materials
AS 1528.1-2001 Tubes (stainless steel) and tube fittings for the food industry.
JIS G 3447 Stainless Steel Sanitary Pipestry Part 1-Tube

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