5.Copper tube joints-Bends with an angle of 90 degreesGB/T11618.3-1989铜管接头90°弯头 6.gear oil pump with connecting bend pipe带连接弯管的齿轮油泵 7.deflect-to-connect connection海底管线与平台立管侧弯联接法 8." Malleable cast iron pipe fittings--Type size--Union elbows, male and female ...
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