ROCK DRILLING. EXTENSION DRILL-STEEL EQUIPMENT FOR PERCUSSIVE LONG. HOLE DRILLING. ROPE-THREADED EQUIPMENTS 22 TO 32 MM.
凿岩 用于冲击式长距离钻孔的加长型钢制设备 钻孔 绳索螺纹设备22至32毫米

1986-06-15

ROCK DRILLING. EXTENSION DRILL-STEEL EQUIPMENT FOR PERCUSSIVE LONG. HOLE DRILLING. ROPE-THREADED EQUIPMENTS 22 TO 32 MM.
凿岩 用于冲击式长距离钻孔的加长型钢制设备 钻孔 绳索螺纹设备22至32毫米

1985-06-15

ROCK DRILLING. EXTENSION DRILL-STEEL EQUIPMENT FOR PERCUSSIVE LONG-HOLE DRILLING. ROPE-THREADED EQUIPMENTS 1 1/2 TO 2 IN (38 TO 51 MM).
凿岩 伸缩钻——用于冲击式深孔钻孔的钢制设备 绳索螺纹设备1 1/2至2英寸（38至51毫米）

1985-04-15

ROCK DRILLING. EXTENSION DRILL-STEEL EQUIPMENT FOR PERCUSSIVE LONG-HOLE DRILLING. REVERSE BUTTRESS-THREADED EQUIPMENTS 1 1/16 AND 1 1/4 IN (27 AND 32 MM).
凿岩 伸缩钻——用于冲击式深孔钻孔的钢制设备 反向支撑螺纹设备1 1/16和1 1/4英寸（27和32毫米）

1985-04-15

Rock drilling — Extension drill-steel equipment for percussive long-hole drilling — Reverse-buttress-threaded equipments 1 1/16 and 1 1/4 in (27 and 32 mm)
凿岩与粉煤灰；冲击式深孔钻用延伸钻钢设备——反向支墩螺纹设备1 1/16和1 1/4英寸（27和32毫米）

1974-08-01

Rock drilling — Extension drill-steel equipment for percussive long-hole drilling — Reverse-buttress-threaded equipments 1 1/2 to 2 1/2 in (38 to 64 mm)
凿岩与粉煤灰；冲击式深孔钻用延伸钻钢设备——反向支墩螺纹设备1 1/2至2 1/2英寸（38至64毫米）

1974-09-01

착암기 장치 — 충격식 천공용 로프 나사형 드릴 공칭 치수 22 mm에서 38 mm
岩石钻孔设备.公称尺寸为22mm至38mm的冲击钻孔用钢丝绳螺纹钻孔钢设备

2022-11-18

Rock drilling equipment — Rope threaded drill steel equipment for percussive drilling, nominal sizes 22 mm to 38 mm
凿岩设备——冲击钻用钢丝绳螺纹钻钢设备 标称尺寸22 mm至38 mm

1991-01-24