Низкотемпературные резьбовые стержни
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ASTM A320 L7 Низкотемпературный резьбовой стержень
ASTM A320 Grade L7 quenched-and-tempered, impact-tested alloy steel threaded rod for low-temperature pressure equipment and industrial bolting.
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ASTM A320 L7M Резьбовой стержень
ASTM A320 Grade L7M controlled-hardness, impact-tested alloy steel threaded rod for specified low-temperature and project-qualified sour service.