YUHONG GROUP CO.,LIMITED
Model No.: Seamless Pipe ASTM A376 TP321H
Packaging: Export Standard Packing
Productivity: 1500 Tons Per Month
Place of Origin: CHINA
Certificate: ISO, ABS, PED, TUV-NORD. TS.
This covers seamless austenitic Stainless Steel Pipe intended for high-temperature central-station service. The grades covered are five H grades and two nitrogen grades. Pipe may be either hot finished or cold finished, with a suitable finishing treatment. All pipes shall be furnished in the heat-treated condition unless the order specifically states that no final heat treatment shall be applied. Tensile test, hydrostatic test, nondestructive electric tests, hardness test, ultrasonic testing, eddy-current tests, tension tests, and flattening tests shall be made to conform to the requirements specified.
This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. SST does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.
This specification covers seamless austenitic stainless steel pipe intended for high-temperature central-station service. Among the grades covered are five H grades and two nitrogen grades (304N and 316N) that are specifically intended for high-temperature service.
Optional supplementary requirements (S1 through S10) are provided. These supplementary requirements specify additional tests that will be made only when stated in the order, together with the number of such tests required.
The values stated in either inch-pound units or SI units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system are not exact equivalents; therefore, each system must be used independently of the other. Combining values from the two systems may result in nonconformance with the specification. The inch-pound units shall apply unless the "M" designation of this specification is specified in the order.
Grades TP321 and TP321H have lower strength requirements for nominal wall thickness greater than 3/8 in. [9.5 mm].
The dimensionless designator NPS (nominal pipe size) has been substituted in this standard for such traditional terms as "nominal diameter," "size," and "nominal size."
2. Referenced Documents
A262 Practices for Detecting Susceptibility to Intergranular Attack in Austenitic Stainless Steels
A941 Terminology Relating to Steel, Stainless Steel, Related Alloys, and Ferroalloys
A999/A999M Specification for General Requirements for Alloy and Stainless Steel Tube
E112 Test Methods for Determining Average Grain Size
E213 Practice for Ultrasonic Examination of Metal Pipe and Tubing
E381 Method of Macroetch Testing Steel Bars, Billets, Blooms, and Forgings
E426 Practice for Electromagnetic (Eddy-Current) Examination of Seamless and Welded Tubular Products, Austenitic Stainless Steel and Similar Alloys
SNT-TC-1A Personnel Qualification and Certification in Nondestructive Testing
Other Standard Specification:
ASTM A213 / A213M - 11a:Standard Specification for Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes
ASTM A269 - 10:Standard Specification for Seamless and Welded Austenitic Stainless Steel Tubing for General Service
ASTM A312 / A312M - 12:Standard Specification for Seamless, Welded, and Heavily Cold Worked Austenitic Stainless Steel Pipes
ASTM A511 / A511M - 12:Standard Specification for Seamless Stainless Steel Mechanical Tubing
ASTM A789 / A789M - 10a:Standard Specification for Seamless and Welded Ferritic/Austenitic Stainless Steel Tubing for General Service
ASTM A790 / A790M - 11:Standard Specification for Seamless and Welded Ferritic/Austenitic Stainless Steel Pipe
DIN 17456-2010:GENERAL PUROSE SEAMLESS CIRCULAR STAINLESS STEEL TUBES.
DIN 17458-2010:Seamless Circular of Austenitic Stainless Steel Tube
EN10216-5 CT 1/2 : Stainless Steel Seamless Pipe & Tube
GOST 9941-81:SEAMLESS COLD- AND WARM-WORKED TUBES MADE OF CORROSION RESISTANT STEEL.
Others like BS, JIS standard or can supply
6.00mm to 830mm
0.5mm to 48mm
Final Finishing: Solution Annealed & Pickled
Processing for stainless steel seamless pipe & tube
Stainless Steel Seamless Pipe Production Flow Chart: Stainless Steel Bar-> Inspection-> Peeling-> Cut-Center-> Heating-> Piercing-> Inspection/Polishing-> Pickling-Cold Rolling/Drawing-> Pickling-> Solution Annealing-> Straightening-> Cutting-> Bright Annealing/Pickling Passivating-> Composition Inspect-> Marking-> Packing-> Storing-> Shiping.