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Anyone making use of this information assumes all liability arising from such use. The higher purity required by G is the difference between the two specifications. Despite this, the G includes these materials with all other materials and requires inaccessible thicknesses for flats, bars, pipes, and tubes. It is important to be aware of these differences in the case where a manufacturer or prescriber requests information on CSA G Again, these two specifications are similar, but have some very important differences; especially in regards to the specified coating properties.
Both tables are shown below to compare the minimum coating thicknesses specified by each one. The sampling procedure set up in G to test the coating thickness has very general guidelines. Some slightly different language exists between the two regarding piping and continuous galvanizing, but when read carefully, the same information is being stated in the scope of each specification. Also, A has no requirements as to the minimum coating thickness on threaded fasteners and items, but refers to ASTM A for these requirements.
ASTM A also declares, in addition to the 0. Both specifications require the use of a knife test to determine proper coating adherence. Total average equal to the requirement for the minimum coating thickness with the thicknesses of all samples greater than a coating grade less than in Table 1.
However, there are some competing specifications that are worthy of consideration when an end user requests that the galvanizer use them. The first major difference between the two specifications is where Article 3.
ASTM A is listed as the standard for renovation by each specification. However, due to financial considerations, CSA G has not been updated since and there appears to be no intention to sca so.
Standards Council of Canada
Also, A does not give requirements for the minimum coating thickness on fasteners g1664 threaded articles but references ASTM A for these requirements. While this standard is similar to ASTM A in scope and purpose, there are many differences between the two. Is the CSA G standard always cs valid specification? The practice behind each method varies from one specification to the other, but the most notable differences are the feeler gauge, magnetic and electronic measurements.
The scope of these two specifications, and therefore their intended purpose, are nearly identical. For, example, each specification uses a table to describe minimum coating thickness standards on galvanized steel, but the minimum requirements and materials listed are quite different.
Table 1 of ASTM A has requirements for structural shapes, strip and bar, plate, pipe and tubing, wire, and reinforcing bar. However, the information presented here may adequately describe some of the major differences between the two. Few requirements are given by G concerning the appearance of the zinc coating. The CSA G classifications are more general and include; cast, rolled, stretched, pressed and forged steel; screws, bolts, nuts, rivets, nails and similar fasteners.
For example, each specification uses a table to describe the standards for minimum coating thickness of galvanized steel, but the minimum requirements and the materials listed are very different. The main difference here is the refusal to accept the presence of matte particles adhering to the coating, according to G The first major difference between the two specifications comes when section 3.
Both standards also cite ASTM B6 as a standard to which the zinc used in the galvanizing bath must conform. The most notable difference here is in regard to the minimum coating thickness required by A for pipe and tubing as well as for strip and bar.
New information and research are constantly taken into account when updates are made to ASTM A; the last update was in The material provided herein has been developed to provide accurate and authoritative information about after-fabrication hot-dip galvanized steel. However, there are some competing specifications that get attention when an end user asks a galvanizer to use them.
This standard has lost its relevance in the market and is rarely used. Each specification makes the coating thickness, finish, appearance and adherence of a hot-dip galvanized coating uniform. The higher purity required by G creates the difference in the two specifications. The practice behind each one of these methods varies from one specification to the next, but the most notable differences are that of the magnetic and electronic thickness gauge measurements.
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Table 1 of ASTM A has requirements for structural forms, strips and bars, plates, pipes and tubes, wires and rebar. Recent reports have shown that much thicker coatings than these minimum requirements are not feasible on these materials.
ASTM A also holds a few more requirements regarding the finish of the coating. The framework of these two specifications, and therefore their goal, is almost identical.
Corbec news on hot-dip galvanizing of steel
Most galvanizers located in North America use this specification as the standard g1664 coating thickness, appearance, finish and adherence. A, on the other hand, only requires the average coating thickness measurement meet the minimum coating thickness required by Table 1, with the average of one specimen being one coating grade below that cs in Table 1.
The information provided herein is not intended as a representation or warranty on the part of the AGA. It is considered the standard of the hot-dip galvanizing industry in North America. It is considered the standard of the hot-dip galvanizing industry in North America. The standard requires that the coating be free of imperfections such as bubbles, rough or uncoated areas, acid, black spots, or cwa particles adhering to the coating Both tables are shown below to compare the minimum coating thicknesses specified by each.