CSA G164 PDF
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The standard requires that the coating be free of imperfections such as bubbles, rough or uncoated areas, acid, black spots, or slag particles adhering to the coating This material provides general information only y164 is not intended as a substitute for competent professional examination and verification as to suitability and applicability.
On the other hand, the A only requires that the average measurement of the thickness of the coating meet the minimum coating thickness required by Table 1, with the sample average having a coating less than that required in Table 1.
This standard has lost its relevance in the market and is rarely used. Both tables are shown below to compare the minimum coating thicknesses specified by each one. Is CSA G still a valid specification? This leads to less confusion during the galvanizing process and creates a complete specification.
The CSA G classifications are more general and include; f164, rolled, stretched, pressed and forged steel; screws, bolts, nuts, rivets, nails and similar fasteners. The sampling procedure laid out in G for testing the coating thickness has some very general and relaxed guidelines. Each standard lists the same tests used to determine g64 coating thickness on galvanized steel; electronic or magnetic gauge, weigh galvanize weigh, weigh strip weigh or microscopy methods.
New information and research are constantly taken into account when updates are made to ASTM A; the last update was in ASTM A also holds a few more requirements regarding the finish of the coating.
CSA CAN/CSA-G164-M92 – Hot Dip Galvanizing of Irregularly Shaped Articles
ASTM A is listed as the standard for repair for each specification. Both tables are shown below to compare the minimum coating thicknesses specified by each. Despite this, the G includes these materials with all other materials and requires inaccessible thicknesses for flats, bars, pipes, and dsa. Perhaps the most obvious and important difference between these standards is how relevant each one is in todays market.
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.
It has lost relevancy in the market and is seldom used. The framework of these two specifications, and therefore their goal, is almost identical. Both standards also cite ASTM B6 as a g146 to which the zinc used in the galvanizing bath must conform.
But G has its own test procedures for the weakening of the base layer, A refers to the most complete guide of csq ASTM A standard, which gives the details of a bending test. Both specifications require that the exposed area be less than an inch in its narrowest dimension. The first major difference between the two specifications is where Article 3.
CAN/CSA-GM92 (R) | Standards Council of Canada – Conseil canadien des normes
Few conditions are given by G regarding the appearance of the zinc coating. Recent reports have shown that much thicker coatings than these minimum requirements are not feasible on these materials. ASTM A has a more realistic expectation that the coating be free of uncoated areas, bubbles, flux deposits, and matte.
ASTM A also declares, in addition to the 0. Table 1 of ASTM A has requirements for structural shapes, strip and bar, plate, pipe and tubing, wire, and reinforcing bar.
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Is the CSA G t164 always a valid specification? 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. The higher purity required by G is the difference between the two specifications.
It is considered the standard of the hot-dip galvanizing industry in North America. Both specifications also contain a slight difference with respect to the repair of uncoated areas during the galvanizing process.
Again, these two specifications are similar, but have some very important differences; especially in regards to the specified coating properties. Each specification makes the coating thickness, finish, appearance and adherence of a hot-dip galvanized coating uniform. However, the information presented here can adequately describe some of the key differences between the two. Some differences exist between the two with regard to piping and continuous galvanizing, but after examination, the same information is indicated within each specification.
Again, these two specifications are similar, but have major differences; particularly with regard to the listed coating properties. But due to financial considerations, CSA G has not been updated since and there seem to be no plans to do so. The higher purity required by G creates the difference in the two specifications. It is considered the standard y164 the hot-dip galvanizing industry in North America.
Both specifications require the use of a knife test to determine proper coating adherence. This creates less confusion during the galvanizing process and a more complete specification. The material provided herein has been developed to provide accurate and authoritative information about after-fabrication hot-dip galvanized steel.
Recent information has shown coatings ca thicker than these minimum requirements are not attainable on these materials. However, due to financial considerations, CSA G has not been updated since and there appears to be no intention to do so. Total b164 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.
Also, A does not give requirements for the minimum coating thickness on fasteners and threaded articles but references ASTM A for these requirements. Anyone making use of this information assumes all liability arising from such use. ASTM A is listed as the standard for renovation by each specification.