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It is the responsibility of the galvanizer to ensure compliance with the specifications, as long as the product has been designed and fabricated in accordance with the supporting specifications. However, if the galvanizer has to perform additional work in order to prepare the product for hot-dip galvanizing, such as drilling holes to facilitate drainage or venting, it should be approved by the customer. Once the material has been hot-dip galvanized, it can be fully inspected at the galvanizing plant prior to shipment.

Any materials rejected by an inspector for any reason except embrittlement may be stripped, regalvanized, and resubmitted for inspection. Anyone making use of this information assumes all liability arising from such use. Was this answer helpful? YES NO. Are you still looking for the right answer? Ask an Expert. Post Comment. Login Close. Leave this field blank.

Necessary Required. Cookies that the site cannot function properly without. Some types of castings have been known to cause for rejection under the coating thickness requirements of show potential problems with predisposition to being em. If will be in excess of those values. The galvanizer has 6. Consultation between the designer. Surface roughness of articles to be painted or powder coated and the smoothing of the galvanized coating before painting or powder coating shall be mutually determined by the galvanizer and the purchaser.

Except for local excess coating thickness which would interfere with the use of the product. Zinc skimmings zinc oxide and zinc chloride par- ticulates from the top surface of the zinc bath may cling to the coating surface after the part is removed from the zinc bath.

Since surface smoothness is a relative term.. These zinc skimmings are not cause for rejection as the coating beneath these skimmings is intact and will provide the antici- pated corrosion protection. Surface conditions related FIG. Other zinc skimmings may need to be ground off the surface of the coating by the galvanizer without removing zinc to the point that the coating no longer meets the minimum thickness requirement. A minimum of five measurements should be made within the volume of each specimen.

The zinc coating on threaded components of articles galva- nized under this specification shall conform to that required in galvanizing or other methods. Some higher-than-standard thicknesses may be imprac- tical or unattainable. Some zinc skimmings can be brushed off the surface or will be washed off in the rain or condensation that gathers on the part as it weathers in the atmosphere. Further preparation of galvanized coatings for painting or powder coating including cleaning.

Such inaccessible areas. They do not address the matter of measured coating thickness variations that can be encountered 7. Once mined by the galvanizer and the purchaser. Marks in the zinc coating caused by tongs or other areas for repairs using zinc metallizing or zinc solder shall be items used in handling the article during the galvanizing the class required by the thickness grade for the appropriate operation shall not be cause for rejection unless such marks steel material category in Table 1 in accordance with the have exposed the base metal and the bare metal areas exceed requirements of 6.

Further preparation the parts have left the galvanizing facility there shall be no of galvanized coatings for painting or powder coating includ- limit on the size of the area subject to renovation. NOTE 9—Although some material may be formed after galvanizing. Internal threads are not prohibited from being of the uncoated area shall be allowed to exceed 1 in.

Sampling because of different steels or different thicknesses of a given steel being used in an assembly. The pieces shall be in the uncoated areas using paints containing zinc dust shall be handled so that after galvanizing they will not freeze together 3. The total of the uncoated areas interfere with the intended use of the material will not be subject to renovation by one of the methods of A shall also permitted.

The size of the uncoated area subject to renova. Surface roughness of articles to be painted or not exceed 36 in. The length and width purchaser. When uncoated areas requir. Any combination of these products can be assembled into a single fabrication and then can be hot-dip galvanized, as seen in Figure It is the responsibility of the designer and fabricator to ensure the product has been properly designed and built before the hot-dip galvanizing process.

The galvanizer should be made aware of any necessary special instructions or requests in advance of shipping the materials to the galvanizing plant. These requests should be stated on the purchase order for the hot-dip galvanizing. It is the responsibility of the galvanizer to ensure compliance with the specifications as long as the product has been designed and fabricated in accordance with the referenced specifications. However, if the galvanizer has to perform additional work in order to prepare the product for hot-dip galvanizing, such as drilling holes to facilitate drainage or venting, it must be approved by the customer.