ASTMA213 不锈钢U型无缝管,热交换器用管

A 262 Practices for Detecting Susceptibility to Intergranular Attack in Austenitic Stainless Steels

A 941 Terminology Relating to Steel, Stainless Steel, Related Alloys and Ferroalloys

A 1016/A 1016M Specification for General Requirements for Ferritic Alloy Steel, Austenitic Alloy Steel, and Stainless Steel Tubes

E 112 Test Methods for Determining Average Grain Size

E 527 Practice for Numbering Metals and Alloys (UNS)

2.2Other Standard:

SAE J1086 Practice for Numbering Metals and Alloys(UNS)4

4.1 It shall be the responsibility of the purchaser to specify all requirements that are necessary for products under this specification. Such requirements to be considered include, but are not limited to, the following:

4.1.1 Quantity (feet, meters, or number of lengths),

4.1.2 Name of material (seamless tubes),

4.1.3 Grade (Tables 1 and 2),

4.1.4 Condition (hot finished or cold finished),

4.1.5 Controlled structural characteristics (see 6.3),

4.1.6 Size (outside diameter and minimum wall thickness),

4.1.7 Length (specific or random),

4.1.8 Hydrostatic Test or Nondestructive Electric Test (see10.1),

4.1.9 Specification designation and year of issue,

4.1.10 Increased sulfur (for machinability, see Note B, Table1, and 14.3), and

4.1.11 Special requirements and any supplementary requirements selected.

10.1 Each tube shall be subjected to the nondestructive electric test or the hydrostatic test. The type of test to be used shall be at the option of the manufacturer, unless otherwise specified in the purchase order.

ASTM A249 / A249M: Standard Specification for Welded Austenitic Steel Boiler, super heater Heat-Exchanger, and Condenser Tubes.

Other Standard: DIN 17456, DIN 17458, EN10216-5, GOST 9940-81, GOST 9941-81, JIS-G3463,

Solution Annealed & Pickled/Bright Annealed.

Type of Tubes:

U-bend & Straight.