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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 ...
This bollard already looked like the modern Amsterdammertje, although, amongst other differences, it was thinner and heavier. [ 2 ] From 1972 the Amsterdammertjes were no longer made from expensive and heavy cast iron, but from plates of steel , approximately 1.35 m (4 ft 5 + 1 ⁄ 8 in) high [ 3 ] and weighing only 20 kg (44 lb).
A bollard is a sturdy, short, vertical post. ... These can be all plastic or plastic/steel hybrids but combine varying degrees of stopping power and flexibility.
Scope of ASTM A53 Standard ASTM A53 is standard specification for pipe, steel, black and hot dipped, zinc-coated, welded and seamless. This specification covers seamless and welded black and hot-dipped galvanized steel pipe in NPS 1⁄8 to NPS 26 [DN 6 to DN 650] (Note 1), inclusive, with nominal wall thickness (Note 2) as given in Table X2.2 ...
Pipe expansion joints are necessary in systems that convey high temperature substances such as steam or exhaust gases, or to absorb movement and vibration. A typical joint is a bellows of metal (most commonly stainless steel), plastic (such as PTFE), fabric (such as glass fibre) or an elastomer such as rubber. A bellows is made up of a series ...
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