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2. Sheet metal - Wikipedia

   en.wikipedia.org/wiki/Sheet_metal

   In most of the world, sheet metal thickness is consistently specified in millimeters. In the U.S., the thickness of sheet metal is commonly specified by a traditional, non-linear measure known as its gauge. The larger the gauge number, the thinner the metal. Commonly used steel sheet metal ranges from 30 gauge to about 7 gauge.

3. Cold-formed steel - Wikipedia

   en.wikipedia.org/wiki/Cold-formed_steel

   Cold-rolled carbon structural steel sheet A611 A 25 42 1.68 26 B 30 45 1.50 24 C 33 48 1.45 22 D 40 52 1.30 20 Zinc-coated or zinc-iron alloy-coated steel sheet A653 SS Gr. 33 33 45 1.36 20 Gr. 37 37 52 1.41 18 Gr. 40 40 55 1.38 16 50 Class 1 50 65 1.30 12 50 Class 3 50 70 1.40 12 HSLAS Type A 50 50 60 1.20 20 60 60 70 1.17 16 70 70 80 1.14 12 80

4. Corrugated galvanised iron - Wikipedia

   en.wikipedia.org/wiki/Corrugated_galvanised_iron

   Corrugated galvanised iron (CGI) or steel, colloquially corrugated iron (near universal), wriggly tin (taken from UK military slang), pailing (in Caribbean English), corrugated sheet metal (in North America), zinc (in Cyprus and Nigeria) or custom orb / corro sheet (Australia), is a building material composed of sheets of hot-dip galvanised ...

5. M3 submachine gun - Wikipedia

   en.wikipedia.org/wiki/M3_submachine_gun

   The M3 has no mechanical means of disabling the trigger, and the insertion of a loaded magazine loads the gun. With receiver walls made of relatively thin-gauge sheet metal, the M3/M3A1 is subject to disabling damage if dropped on an open dust cover—the covers bend easily, negating the safety feature.

6. Terne - Wikipedia

   en.wikipedia.org/wiki/Terne

   Terne metal can last 90 years or more if the paint is maintained. Terne-coated stainless steel (TCS II or Roofinox), or copper is commonly used to replace terne metal roofs as either material will outlast terne metal. Terne-coated stainless steel roofing can last 100 years or more unpainted; copper roofing can last 50 years or more unpainted ...

7. RKG-3 anti-tank grenade - Wikipedia

   en.wikipedia.org/wiki/RKG-3_anti-tank_grenade

   Black body with white markings. The reusable warhead contains a reloadable black powder charge that mostly produces black smoke that is vented through holes in the heavy-gauge sheet-metal. A new fuze and parachute can be quickly reloaded in the handle after use by using special armorer tools. M79 Copy of the RKG-3EM by Yugoimport SDPR.