1. Q: Lub npe tus qauv rau welded thiab seamless carbon steel yeeb nkab rau qis -kev pab kub (txog -50℃F).
A: ASTM A333 npog seamless thiab welded steel yeeb nkab rau qis - kev pabcuam kub. Qib 1 (-50℃F), Qib 6 (-50℃F), thiab Qib 3 (-150℃F, tab sis qhov no yog nickel alloy hlau).
2. Q: Dab tsi yog qib feem ntau hauv ASTM A333 rau qis -kub carbon steel piping?
A: ASTM A333 Qib 6 (qhov cuam tshuam kuaj rau -50℃F). Nws yog ib tug tua, nplua -grain, carbon-manganese-silicon steel.
3. Q: Rau siab -yield-lub zog, txias- tsim welded structural tubing, ASTM qib yog dab tsi?
A: ASTM A500 Qib D (Round: Min Yield 58 ksi, Rectangular: Min Yield 62 ksi).
4. Q: Dab tsi yog ib qho qauv thiab qib rau kev nruam galvanized steel yeeb nkab (tube) rau fencing thiab handrails?
A: ASTM A53 Qib B, Hom E (ERW) thiab tom qab ntawd galvanized rau ASTM A153, lossis ASTM A120 (galvanized).
5. Q: Tus qauv thiab qib twg yog qhov zoo rau seamless carbon steel yeeb nkab siv hauv kev lag luam khoom noj thiab dej haus?
A: ASTM A106 Qib B lossis ASTM A53 Qib B, feem ntau nrog kev ua tiav tshwj xeeb lossis txheej txheej.
