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1·The pump casing, impeller, motor housing and stationary base elbow shall be manufactured of close-grained cast iron, ASTM A48, Class 30.

泵壳，叶轮，电机壳和固定底座弯头都应该采用符合美国材料试验协会ASTM A48级别30致密铸铁制造。

2·The base shall be of adequate height to provide suitable clearance between the pump suction elbow and the mounting floor and of sufficient strength to accept all forces imposed by the pump unit.

这个基座应该具有适当的高度，使得泵吸入弯头与安装地面具有适当的间隙，并有足够的强度承受泵设备所产生的所有压力。

3·The company's production base in China's Rural Pipe Elbow - Cangzhou.

本公司的生产基地在中国弯头管件之乡-沧州。

4·The utility model has characteristics in that the sensor includes a shape memory alloy elbow, the fiber grating, a copper plate with groove and a copper base plate.

本实用新型的特征是由形状记忆合金弯管、光纤光栅、带槽铜片以及铜基片构成。

5·The steel elbow is used as the base stock for polyethylene coating elbow and no-interface circular polyethylene material is coated to the outside of steel elbow.

聚乙烯涂装弯管以钢质弯管为基材，在钢质弯管的外表面涂装无接口的环状聚乙烯材料。