Maka iji iko na-eme ihe
Nkọwapụta ASTM A193 na-ekpuchi ihe ndị achọrọ maka ike iji nweta ihe dị elu iji nweta ihe dị elu maka ọnọdụ okpomọkụ ma ọ bụ ọrụ nrụgide na ngwa kachasị pụrụ iche. Ọ bụ nkọwapụta ọkọlọtọ nke na-akọwapụta ihe mejupụtara kemịkalụ na-emepụta ọgwụ, ihe ndị siri ike, na asambodo ndị ọzọ maka njikọ arụ ọrụ, na valves, na ngwongwo. ASTM A193 na-akọwa SI (Metric) na Pound Pound.
Alloy 20 (alloy 20) bụ Aulenitic Almenitic nke dị iche iche mepụtara iji guzogide corrosic acid acid. Ọ nwere nguzogide nduru sọlfọ; O nwere iguzogide siri ike na phosphoric acid, nitric acid na gburugburu gburugburu chloride, corroside nrụgide, na-etinye corrosion na corrosion. Ya mere, alloy 20 nwere aha nke mgbochi corrosion allosion. Ọ nwere ọtụtụ ngwa dị iche iche: Chemical, nri, ọgwụ, ọgwụ ike na ụlọ ọrụ plastik ga-eji ya. N'ihi na nguzogide corrosion na corrosion chloride, nsogbu na-agbawa nsogbu nsogbu, wdg, alloy 20 na-ejikarị.
Uru a na-achịkwa nke ọma nke ASTM A182 Bel F9 R9 R9 COSS ebe a na-arụ ọrụ ebe enwere ike mgbanwe dị ala nwere ike ime ka ịbawanye ma nwee scrap.
Emebere A320 L7 LOTS Bolts maka arụmọrụ dị ala. A na-ejikarị ngwa ngwa ndị a na valves, flanges, feiti na arịa nrụgide. Nkọwa Astm na-atụ aro ka ọ dị obere uru nke 20-FT-LBF -150F maka ASTM A320 L7 Studs.