Astm A270 Seamless And Welded Austenitic Ferritic Stainless Steel Sanitary - Chinaprice: contact company for price
Austenitic Stainless Steel Sanitary Tubing
1.1 This speciﬁ cation covers grades of seamless, welded, and
heavily cold worked welded austenitic and
ferritic/ austenitic stainless steel sanitary tubing intended
for use in the
dairy and food industry and having special surface ﬁ nishes.
Pharmaceutical quality may be requested, as a supplementary
1.2 This speciﬁ cation covers tubes in sizes up to and
including 12 in. ( 304.8 mm) in outside diameter.
1.3 The values stated in inch- pound units are to be regarded
as standard. The values given in parentheses are
conversions to SI units that are provided for information
only and are not considered standard.
1.4 Optional supplementary requirements are provided, and
when one or more of these are desired, each shall be so
stated in the order
2. Referenced Documents
2.1 ASTM Standards: 2
A 262 Practices for Detecting Susceptibility to
Intergranular Attack in Austenitic Stainless Steels
A 480/ A 480M Specification for General Requirements for
Flat- Rolled Stainless and Heat- Resisting Steel Plate, Sheet,
A 923 Test Methods for Detecting Detrimental Intermetallic
Phase in Duplex Austenitic/ Ferritic Stainless Steels
A 967 Specification for Chemical Passivation Treatments for
Stainless Steel Parts
A 1016/ A 1016M Specification for General Requirements for
Ferritic Alloy Steel, Austenitic Alloy Steel, and Stainless
E 527 Practice for Numbering Metals and Alloys in the
Unified Numbering System ( UNS)
2.2 ASME Standard:
B46.1 Surface Texture ( Surface Roughness, Waviness, and
2.3 ASME Boiler and Pressure Vessel Code: Section VIII
2.4 Other Standard: SAE J1086 Practice for Numbering Metals
and Alloys( UNS) 4
3.1.1 roughness average, Ra, n- arithmetic average surface
roughness normally reported in microinches or microns; a
measurement of surface roughness usually performed by moving
a stylus in a straight line along the surface, although
other methods may be used.
TABLE 1 Chemical Requirements
. . .
UNS Designation A
A New designation established in accordance with Practice E
527 and SAE J 1086.
B For small diameter or thin walls or both, where many
drawing passes are required, a carbon maximum of 0.040 % is
necessary in grades TP304L and TP316L. Small outside
diameter tubes are defined as those
less than 0.500 in. ( 12.7 mm) in outside diameter and light
wall tubes as those less than 0.049 in. ( 1.24 mm) in average
wall thickness ( 0.044 in. ( 1.12 mm) in minimum wall
C The method of analysis for nitrogen shall be a matter of
agreement between the purchaser and manufacturer.
TABLE 2 Permissible Variations in Dimensions
Size, Outside, Diameter, in. ( mm)
Permissible Variations in Outside Diameter, in. ( mm)
Permissible Variations in Cut Length, in. ( mm) A
1.000 ( 25.4) and under
0.005 ( 0.13
1⁄ 8 ( 3.2)
Over 1 ( 25.4) to 2 ( 50.8)
0.008 ( 0.20)
Over 2 ( 50.8) to 3 ( 76.2)
0.010 ( 0.25)
Over 3 ( 76.2) to 4 ( 101.6)
0.015 ( 0.38)
Over 4 ( 101.6) to 5 1⁄ 2 ( 139.7) , excl
3⁄ 16 ( 4.8)
5 1⁄ 2 ( 139.7) to 8 ( 203.2) , excl
0.030 ( 0.76)
8 ( 203.2) to 12 ( 304.8)
0.050 ( 1.27)
A The cut tolerances do not apply to Pharmaceutical Tubing
in S2 ( see paragraph S2.7) .
TABLE S2.1 Tensile and Hardness Requirements
Strength min, ksi ( MPa)
in 2 in.
75 ( 515)
30 ( 205)
70 ( 485)
25 ( 170)
90 ( 620)
65 ( 450)
95 ( 655)
116 ( 800)
80 ( 550)
- Posted By: Ningbo Junfun International Trade Co.,Ltd
- Phone: 8605748200788
- Address: B-2320, ShiJi Plaza,Daliang Street No.118,Haishu D, Ningbo, China
- Website: http://www.junfunsteel.com
Published date: September 14, 2015 -
- Business Description: Junfun is an available Chinese supplier located in Ningbo city. We focus
on steelfiled, under the brand name of "Junfun", including seamless
steel pipe,welded steel pipe, ball valve, butterfly valve, flange,
elbow, tee,etc., which are used in industries like petrol,
chemical,pharmaceuticals, environmental protection, food&water,
conservancy,shipbuilding, automobile, aerospace, pressure vessels,
mechanical processing, etc. Professional and experienced workers, strict
supply chain management ensures the fulfillment of clients'
From the raw material to finished products, we insist on recording each
step of production situation and test, which can track the quality
problem. Welcome inquiry, welcome cooperation.
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