PaintSquare.com
      | Connect Follow us on Twitter Like us on Facebook
About | Subscribe | Advertise
  

 


A780 Standard Practice for Repair of Damaged and Uncoated Areas of Hot-Dip Galvanized Coatings

All Standards | ASTM Standards
Search Standards


Click to Purchase and Download this Standard or Test Method

Revision Date: June 08, 2009
Updated On: June 09, 2009
Editorial Change:
 
1.1 This practice describes methods that may be used to repair damaged hot-dip galvanized coatings on hardware, structural shapes, and other products fabricated prior to hot-dip galvanizing, and uncoated areas remaining after initial hot-dip galvanizing. The damage may be the result of welding or cutting (flame), in which case the coating will be damaged predominantly by burning. This practice can also be used to repair hot-dip galvanized coatings damaged by excessively rough handling during shipping or erection. Requirements concerning the renovation of uncoated areas remaining after initial hot-dip galvanizing are contained within the applicable material specification.

1.2 This practice describes the use of low melting point zinc alloy repair rods or powders made specifically for this purpose, the use of paints containing zinc dust, and the use of sprayed zinc (metallizing).

1.3 The extent of repair shall be limited to an area mutually agreeable to the contracting parties. Similarly, contracting parties shall agree to the repair method to be used.

1.4 This specification is applicable to orders in either inch-pound units (as A 780) or in SI units (as A 780M). Inch-pound units and SI units are not necessarily exact equivalents. Within the text of this specification and where appropriate, SI units are shown in brackets. Each system shall be used independently of the other without combining values in any way.

1.5 This standard does not purport to address the safety problems, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

(Back to all Standards)

 
   

US Minerals
US Minerals -
Black Magnum

With nationwide production and distribution capabilities, U.S. Minerals supplies a complete range of coal slag and other abrasives to meet all of your blasting needs.


Trelawny Surface Preparation Technology
Surface Preparation Equipment

Manufacturer of needle scalers, grinders, scarifiers and scabblers. Pneumatic tools for Marine and Construction. US distributor CS Unitec: 800-700-5919


Advanced Recycling Systems
ADVANCED RECYCLING SYSTEMS (ARS)

Recycling Machines, Dust Collectors, Rapid Deployment units are time-tested and approved for the rugged industrial environment. Contact ARS today!
(330)536-8210


Minerals Research & Recovery

HIGH PERFORMANCE ABRASIVES


“Made in the USA!”

Why recycle waste from other countries? Go FASTER, CLEANER, at 1/3 THE COST with MR&R “All-American” Sharpshot®HP!!

WATCH THE VIDEO


Hempel (USA) Inc.
HEMPEL PROTECTIVE COATINGS

Efficient systems and high quality products to reduce your maintenance costs. Visit Hempel Protective for more information.


Midsun Specialty Products
Stopaq 30+ Year Coatings

Use Stopaq corrosion prevention coatings on pipelines, field joints, tank chimes, structural steel and more. Learn more at www.midsunsp.com/stopaq


Tinker & Rasor
Holiday Detectors Made in the USA

When it comes to coating inspection, get the right instrument for the job. Tinker & Rasor pulse –type DC holiday detectors come standard with the widest voltage range available, 800 volts to 35,000 volts in one instrument.


Mohawk Garnet
Enska by Mohawk Garnet™

A safe, efficient and economical abrasive alternative to slag and sand products. More information
at 1.866.642.7638 or info@mohawkgarnet.com Email for follow up – mheilimo@mohawkgarnet.com

 
 
 
Technology Publishing

The Technology Publishing Network

The Journal of Protective Coatings & Linings (JPCL) PaintSquare
Durability + Design Paint BidTracker

 
EXPLORE:      JPCL   |   PaintSquare News   |   Interact   |   Buying Guides   |   Webinars   |   Resources   |   Classifieds
REGISTER AND SUBSCRIBE:      Free PaintSquare Registration   |   Subscribe to JPCL   |   Subscribe to PaintSquare News
MORE:      About PaintSquare.com   |   Privacy policy   |   Terms & conditions   |   Site Map   |   Search   |   Contact Us
 

© Copyright 2000-2015, Technology Publishing / PaintSquare, All rights reserved
2100 Wharton Street, Suite 310, Pittsburgh PA 15203-1951; Tel 1-412-431-8300; Fax 1-412-431-5428; E-mail webmaster@paintsquare.com