Product Fire Sprinkler Steel Pipe Material Carbon Steel Grade Q195 = S195 / A53 Grade A Q235 = S235 / A53 Grade B / A500 Grade A / STK400 / SS400 / ST42.2 Q345 = S355JR / A500 Grade B Grade C Standard GB/T3091, GB/T13793 API 5L, ASTM A53, A500, A36, ASTM A795 Specifications ASTM A795 s...
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