1 This specification is under the jurisdiction of ASTM Committee A01 on Steel, 3 For referenced ASTM standards, visit the ASTM website, , or. Oshwin carries a complete line of ASTM A TP Stainless Steel Welded Tubes also in customized size & standard, available in both. What is the difference between ASTM A, A, A, and A Stainless steel tubing.

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Equipment used ranges from tape measures to laser micrometers. Historical Version s – view previous versions of standard.

Physical properties of the strip, as well as its chemistry, are specified and controlled tightly to ensure a quality tube. Heat and product analysis shall conform to the requirements as to chemical composition for carbon, manganese, phosphorous, sulfur, silicon, chromium, nickel, molybdenum, nitrogen, copper, and others.

Last but not least, testing methods must be topnotch to ensure a top-quality product. In addition, room-temperature tensile and hardness tests are required to evaluate the material properties of the tube and to provide assurance of asgm to pressure vessel design criteria.

Producing quality ASTM A and ASME SA pressure tubes – The Fabricator

Only fusion welding processes should be used to produce high-quality stainless, duplex, and nickel-alloy pressure tubing that will be used in demanding or critical applications.

All Projects require careful planning to ensure a good result and correct material selection. A high cost option. Plasma arc welding PAW also is used and often is abbreviated as plasma welding.


Heat treatment is annealing also referred to as solution treatment or solution annealing. ASME and ASTM pressure tubing specifications require that either a hydrostatic pressure test or a nondestructive electric test be performed on every length of tubing produced.

With weld bead rolling it would be expected that the finish of the weld would be similar to that of the parent tube.

Tube – Burst Pressure ASTM A / ASME SA

It is specifically directed at food industry applications, specifying the features necessary to ensure high integrity lines for hygienic applications without requiring high cost additional mechanical testing.

Note the weld has been attacked less than the base metal, resulting in a weld decay ratio of 0. GTAW and plasma welding are the most forgiving of the common welding methods and can produce an excellent-quality weld most easily. Work done by Atlas Steels indicates that for 1. Within the text, the SI units are shown in brackets. Slide Show 5 Images. Quality control inspection and testing of tubing should be extensive and can be categorized as nondestructive tests, mechanical tests, or corrosion tests.

The tube must be forged on the inside as well as the outside to achieve the correct properties.

Producing quality ASTM A249 and ASME SA 249 pressure tubes

Link to Active This link will always route to asttm current Active version of the standard. Feel free to contact! It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

This requirement addresses the heart of the issue – freedom from sites for product or bacterial build-up. For example, small additions of sulfur have been known to z249 weldability, but excessive amounts may harm the ductility and formability of the product. All materials shall be furnished in the heat-treated condition in accordance with the required solution temperature and quenching method. The comparatively small weld puddle created by laser beam welding makes it difficult to achieve a robust manufacturing process.


The possible conditions range from a “mill finish” qstm.

The finish options available in this specification are very comprehensive. ASTM and ASME pressure tube specifications require sstm testing of random tube samples at designated intervals – – for example, every 1, feet meters – – of each production lot. Stamper protects copper, aluminum parts with orbital wrapper Automec touchscreen CNC backgauge control allows user to import bend photos Lissmac SBM-XL R1S2 deburring, edge-rounding machine handles thick plates in single pass.

In asgm nondestructive eddy current tests performed at aa249 author’s company, the tube is checked for imperfections and marked with an ink spray where the defect is noted. If required we arrange for packaging also for sea freightsupply plastic caps or protection rings at the pipe ends and organise special marking.

Rath Manufacturing Company manufactures welded, full finished stainless, duplex, and nickel alloy pipe and tubing for the most demanding service in food, dairy, chemical, petrochemical, and other process environments.