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2. Hollow structural section - Wikipedia

   en.wikipedia.org/wiki/Hollow_structural_section

   In the recent past, HSS was commonly available in mild steel, such as A500 grade B. Today, HSS is commonly available in mild steel, A500 grade C. Other steel grades available for HSS are A847 (weathering steel), A1065 (large sections up to 50 inch sq made with SAW process), and recently approved A1085 (higher strength, tighter tolerances than ...

3. ASTM A500 - Wikipedia

   en.wikipedia.org/wiki/ASTM_A500

   ASTM A500 is a standard specification published by the ASTM for cold-formed welded and seamless carbon steel structural tubing in round, square, and rectangular shapes. It is the most commonly specified ASTM standard in the US for hollow structural sections.

4. Nominal Pipe Size - Wikipedia

   en.wikipedia.org/wiki/Nominal_Pipe_Size

   Nominal Pipe Size (NPS) is a North American set of standard sizes for pipes used for high or low pressures and temperatures. [1] " Nominal" refers to pipe in non-specific terms and identifies the diameter of the hole with a non-dimensional number (for example – 2-inch nominal steel pipe" consists of many varieties of steel pipe with the only criterion being a 2.375-inch (60.3 mm) outside ...

5. Steel square - Wikipedia

   en.wikipedia.org/wiki/Steel_square

   The steel square is a tool used in carpentry. Carpenters use various tools to lay out structures that are square (that is, built at accurately measured right angles ), many of which are made of steel , but the name steel square refers to a specific long-armed square that has additional uses for measurement, especially of various angles .

6. Pipe (fluid conveyance) - Wikipedia

   en.wikipedia.org/wiki/Pipe_(fluid_conveyance)

   For example, 2" Schedule 80 pipe has thicker walls and therefore a smaller inside diameter than 2" Schedule 40 pipe. Steel pipe has been produced for about 150 years. The pipe sizes that are in use today in PVC and galvanized were originally designed years ago for steel pipe.

7. Structural steel - Wikipedia

   en.wikipedia.org/wiki/Structural_steel

   Structural steel shapes, sizes, ... 275 or 355 denotes the yield strength in newtons per square millimetre or the ... Requirements for S275JOH pipe tolerances ...